Cedric Roberge, a college student, turned a trending interest in peptides into a profitable app called Pep AI, generating $50,000 in just seven weeks. The idea emerged when his roommate mentioned peptides, followed by TikTok videos on the topic. Noticing a gap in the market—no successful peptide tracking app existed—Cedric leveraged AI coding tools like Replit and Claude to build the app in about two weeks, despite having no advanced technical skills. The app helps users track peptides safely, offering dosage calculators, injection site logging, educational quizzes, and research resources. Cedric's success hinged on strategic market validation: he analyzed competitor reviews, built a waitlist of 300 users, and collaborated with influencers in the niche before launch. Influencer marketing proved transformative, with one post generating over $10,000 in revenue. He emphasizes that marketing and distribution outweigh the product itself, advising founders to spot trends on social media, validate demand, and move quickly. Despite Apple's initial rejections over medical advice concerns, he navigated approvals using expedited reviews. Cedric's story highlights the power of AI tools, trend-spotting, and relentless persistence, as he aims to scale Pep AI to $1 million per month, driven by a belief in his vision despite skepticism from peers.
Most people spend years searching for a business idea.
This college student found his in an afternoon
and then made $50,000 in seven weeks.
I'm a college student who built an app called Pep AI.
We launched just seven weeks ago
and we've already hit $50,000 in total revenue.
The difference isn't luck, it's knowing where to look
and that's exactly what this episode today is about.
This is like one of those things
that it just blew up overnight,
but that's kind of what I would do again is I would. I asked Cedric, the founder, to come onto the channel
to break down exactly how he did it.
And in this episode, we'll cover the simple app
he built in a couple of weeks,
the trending idea that helped him make
over $50,000 in seven weeks,
and how anyone can spot ideas like this
that are blowing up right now and build fast.
This is one that you cannot miss.
I'm Pat Walls, and this is Starter Story.
All right, Cedric, welcome to the channel.
Tell me about who you are, what app you built,
and what's your story?
Yeah.
My name is Cedric Roberge.
We launched just seven weeks ago,
and we've already hit $50,000 in total revenue.
Today, I'll break down exactly how I found this growing niche
and turned it into an app that's helping thousands of people.
Okay, so this app is super cool.
It's super trending.
We're gonna get all into that and why this app popped off
and made over $50,000 in basically about seven weeks.
But before we do, explain the app,
show me some of your revenue,
show me that this thing is real.
This is the app.
The main point of the app
is tracking peptides for safety.
A lot of people take peptides
and don't really know what they're doing.
So there's weight loss ones.
There's some for tanning, skincare,
and some of them also are for like recovery.
If you got injured, you can inject it in those spots
and it's supposed to help your recovery process.
So the whole point of the app
is to help people track their peptides safely.
So this is our Revenue Cat dashboard.
This is in the last 28 days.
We have 33,000 revenue,
almost 2,000 active subscriptions.
Our MRR
is 11K total revenue, 51K.
We have a yearly subscription,
that's $45 and a monthly subscription for $10
with a three-day free trial.
All right, cool.
Well, thanks for sharing your revenue dashboard,
being open and transparent about that,
especially because your app is trending
and taking off right now,
which we're going to talk all about that
and maybe some of the reasons
why this app grew so quickly.
But before we do, I'm curious,
is this the first app that you built?
What's your background?
How do you get to this point
where you've made over $50,000
with an app in about seven weeks?
Yeah, so it's not the first app I've built.
I built my first one in October.
It was a student marketplace app
for the University of Oregon.
And we just went around campus
and kind of told people about it
and got like 800 users.
But I always wanted to take it
like to another level
where I could actually make revenue
because we didn't make any money with that app.
The whole experience from the first app
taught me that I needed to find a niche
that was really specific to like a group of people
that would be interested in it.
So once I realized that,
you know, I decided to find something
that was really popular.
And I was like,
and how I went about that
was just scrolling social media
until I found something
that everyone was talking about
and realized that there was
no successful app for this.
All right. Yeah.
I mean, I think one of the most common
first business ideas
when I talk to a lot of founders
is building a marketplace.
Obviously, that's really hard to do.
It's hard to monetize.
It's hard to get it to work.
But an app like this,
obviously, it worked out pretty quickly.
So let's talk about that.
We're going to talk about how you grew it.
But first, I want to know,
how did you build it?
And how long did it take
to go from idea to working app?
Yeah, it didn't really take that long, honestly,
because vibe coding,
it makes it so easy.
I started on Replit,
which was really easy
because I would just explain
what I wanted
and they would build it for me.
I also had Claude as like my guide.
So when it came to setting up Revenue Cat
for in-app subscriptions,
Resend for sending out emails,
anything that I have no idea
how to set up,
I could just ask Claude
and he was like my senior developer.
So using Claude and Replit,
it took about two weeks to build out.
And then I used Firebase for the back end,
which we just store all of our user data.
The hard part, though,
is just Apple rejected it
like a million times
because they don't really want you
to give medical advice.
And a lot of the features came off as that.
So once we worked around it
and found out how other
kind of similar apps were doing it,
we found, you know,
the good spot where Apple was happy
and they approved it.
And now it hasn't been an issue.
So it's funny.
It doesn't really take that long,
even if you're not technical,
to build an app these days.
The longest process,
at least for iOS,
I've talked to a lot of founders,
is just getting it approved.
How long did that process take?
To get it approved?
Probably like a week,
just back and forth
to make it work.
To make it faster,
I found out that you can
expedite Apple reviews
if there's something major.
So we actually got one approved
kind of quickly.
And then there was a bunch of issues.
So then I found out
about this expedite review,
which then they would review it
in like two hours
instead of two days,
which kind of sped up our process.
I love what Cedric
is breaking down right now.
But the real secret behind his success,
I think, is the power of AI.
See, when you have an idea
or you spot a trending topic like this,
the most important thing
is your ability
to build an app.
Build and launch fast.
And with today's AI tools,
this is more possible
than ever before.
So if you're wondering
how you can get started,
find an idea and build it quickly.
Well, I have something for you.
Inside Starter Story Build,
we have our free iOS bootcamp.
In just a few days,
we will guide you
on how to spot a good idea,
how to build it,
how to get it ready
for the app store.
You will build it 100% with AI.
You don't need to be technical
and you don't need to write
a single line of code yourself.
If you're ready to build,
just head to the first link
in the description
and you can get started.
All right, let's get back
to the episode.
Okay, cool.
So as everyone knows
who watches this channel,
the easy part is building it.
You built it a few days
and took a week
to get it approved.
That's not that hard.
Didn't take that long.
I think one of the
most important things
for a lot of people
watching this channel
is how to find the right idea.
And I think that your app
is the perfect example
of finding a great niche,
a great idea,
a growing trend.
How did you actually
find this idea?
How did you validate
and how did you know
and have confidence
that this is something
that can make $50,000
in seven weeks?
How it started is
one of my roommates
came up to me
and was like,
we should take peptides.
And I had no idea
what he was talking about.
Like a week later,
I get a TikTok
on my For You page
about peptides.
And so, you know,
I started looking them up
and found that they're huge
on social media.
There wasn't an actual
peptide app out there
to like really explain
what all these peptides do
and how to use them safely.
And there were a couple
that had been out
for a couple of years,
but none of them
were successful yet.
That's when I realized
that there was
like an opening there.
So then I went through
every single existing app,
looked through all the reviews
of the things like,
what do people like?
Not like,
what do they wish they had?
And then from there,
I just built the best version
and had Claude do
a bunch of searches
so that we could build
something that would be
actually useful for people
when they want to take peptides
or just learn about them.
I think there's a couple
of interesting points
you have there,
which is like,
there was like a couple
of signals,
which is your friend
told you about it
and you saw it in TikTok
and then you had
genuine interest in it as well.
Those are like three things
that I think are really important.
If anyone's watching this,
what would be your advice
to them on like
how to identify
like an idea like this?
Tell me a little bit more
about that.
Yeah, it's hard to say
because, you know,
this is like one of those things
that it just blew up
overnight kind of
and then I just moved quick.
But that's kind of
what I would do again
is I would scroll social media,
find all these big
content creators online
and what are they
all talking about?
Is there something
you've never heard of
that they're all talking about?
Because if there is,
there's a chance
that it's something new
and no one has done
anything with it.
An example I have is like
people were really into
the looks maxing for a while
and like just be trying
to look as best as they can.
And so this guy made an app
where you like take
a picture of yourself
and it tells you
what you need to do
to look better.
And that was just a trend
on TikTok.
So I think that if you can
find any trend online,
you can turn it into an app.
What's super cool
about your app, Peptides,
is that you probably
don't have to work that hard
to market it right now
relatively because
it's so popular right now
that people are actually
just searching it
in the app store
and finding your app
100% organic.
And, you know,
that's one of the huge benefits
of finding a trend
before it takes off.
There's actually,
there's been a couple
of competitor apps
that have come out
since we started.
Like everyone's copying ours
kind of and like creating
apps called
like Peptide AI now.
One of them,
like there was a post on X
that blew up about that.
People started looking up
Peptide AI,
but ours was the top search
and we got like a bunch
of like just traction
from that.
So it puts us
in a good spot.
Building on a growing trend,
let's dive a little bit
deeper into that.
If you were to start
over right now,
Peptides are already
reached the top
of their trend curve
and you have to find
a new idea.
What would be your
step-by-step
if you're starting over
in middle of 2026,
finding a new trend
and building an app?
What would be your process?
I would probably just live,
go on social media.
Every free second I have,
I would just go on there,
scroll TikTok,
scroll Instagram
and just find what
everyone's talking about.
This is what a lot of
successful people have done
is finding things
that are just blowing up.
But I would literally just
step one is watch TikTok
every single day
and find out what people
are just genuinely
obsessed over.
If multiple people
are posting about it,
it's probably going to be
something that you can
turn into a tool
that people would use.
Step two is to investigate
whether these apps
already exist in the space.
And if they do,
I think it's actually
a good thing
because it kind of validates
that this is something
that people want.
If there is zero apps,
it's still 100%
can be popular
and done well.
But I think if there are
a couple apps,
that's a good sign
because people have built it.
People want it.
Just no one's really marketed it
like successfully yet.
Next step is
what I would do
is look for these other apps
and come up with ideas
off of it.
I would literally go through
every single review
on all these apps.
Like I said before,
find what people like,
what they don't like,
what they wish the app had
and then take all that
and give it to Claude
or ChatGBT.
And have them come up
with your app idea
so that you have
at least a foundation
of what you want to build.
This is genius.
I actually just talked
to a founder
who completely rebranded
their entire app
based on past.
They took all their reviews.
They took all their
cancellation reasons
and Stripe.
They took all their
support requests.
They pumped it into Claude
and they completely
rebranded their app.
And then after the rebrand,
they grew like 350%
or something like that.
So go on
and look at the existing.
Even if you have competitors,
go take their reviews,
put it into Claude
build your own thing, you might be able to do it better.
I like that.
what's the next step step four i would say is to find influencers in that niche and get them
posting about it before you even launch we reached out to a couple people had them made a couple
posts just to see like are people interested in this and all of them said yes we made some reddit
posts and we had a wait list with like 300 people on it before we launched so we knew that this was
something people were really going to be interested in and one thing i also did was when i first got
interested in peptides i was watching a lot of people on social media and everything that these
guys would say i believed and trusted which is kind of what gave me the idea that if i trusted
them and if they were promoting an app i would totally download it so if i just got to them
before anyone else and got them to post about my app and be like this is the tool i use everyone's
going to listen to that so the results were what really blew me away we had one guy that had made
one story post and from that we did a thousand dollars in revenue which is insane for one story
post on instagram and then when he made his actual first post it got 50 000 views and we did like 4
000 in revenue
just from that day we think that we did in total over 10 000 revenue from that post so that's really
what made me realize how important the influencer marketing is i mean i feel like that's one of the
little secrets also of finding something trending is there's also like influencers that are maybe
don't realize how powerful or realize how big their following is because the trend is still
so early and that's a great example of that i'm guessing you couldn't attribute all the
revenue but ten thousand dollars from a single post is insane what's the final step step five
though and i think the most important part about building an app is marketing i think marketing and
distribution matters way more than your idea than your app how great it is if you don't have a vision
for how you will market it and distribute it then i just don't even think it's worth building i got
this advice from some other podcasts that i watched of other successful app founders and
that's their biggest piece of advice is just if you don't know how you're going to market it and
you don't have a plan for influencer marketing ads whatever it is that's the biggest thing so
unless you feel very confident in how you'll market it i wouldn't even build it there's a
famous quote which is first time founders think about product second time founders think about
distribution let's switch topics a little bit and actually take a look at your app i'd love if you
could show me the app that you built the app that made 50 000 in seven weeks could you just like
walk me through a demo of the app yeah so the core features of pep ai is the main feature is peptide
tracking you know people want to be safe about what they're tracking and know how much to take
the first feature i would use on the app is go to the calculator where there you can put in your
vial amount then you can add your back water and how much you're wanting to take and then from there
it tells you how many units to pull to after that you could go to adding your peptide
then you put in how much is in that one how much water but then once you get to there
you have everything inserted then you can actually log a dose and from the calculator
you know how much you would be taking and then choose your injection site which is a really
important part because you want to remember where you did last time you don't want to do
the same spot over and over and then after that the other really important feature is just our
research you know we have a kind of like a duolingo type feature where you can take quizzes
and teach yourself everything about peptides and then we also have a research library where you can
look at different type of peptides you know the overview the research focus how it works and then
we have sources in there from pubmed which is a source everyone likes for reading about peptides
and then we have our own website where you can see the real information about it and then uh yeah then
we have a lifestyle feature where you can like do meal scanning tracking nutrition weight tracking
apple health integration progress photos and yeah that kind of sums up what the app does so it's
pretty simple cool i was uh just searching peptide tracker on the app store right here on my phone
and looks like there's a couple ads but you come up number three which is awesome congrats last
question that we asked all founders who come on here what would be your advice if you could go
back in time before you had this successful app that was making money maybe after you had that
first app that didn't really work out what advice would you have for your younger self
or for anyone watching this that wants to build a profitable app like you
yeah my biggest piece of advice and the advice i've given myself this entire time is just
literally never giving up on myself i've always been very like an entrepreneurship type of person
and i've always wanted to have my own company building apps or video games and so it's always
been my dream and so once vibe coding became a thing i knew i could actually do it and so i've
just never given up and i was literally never going to stop until something became successful
it just happened a lot faster than i thought it would but i still want to scale even farther i
want to make this a 1 million dollar a month app and so i got to keep telling myself the same
advice just never give up fully believe in yourself i've had literally a lot of my friends
that i'm really close to that just make fun of my app ideas even what it is now they still think
it's funny and not a serious thing but i have a vision and i know where i want to be so it's just
never given up on what you really believe in
well that's awesome advice thanks for coming on the show congrats on your success i think it's
going to grow and become a lot bigger and you'll hit that 1 million a month maybe we'll have you
back on the channel put a comment there below if you'd like to see cedric come back on when he's
hit 100k per month or maybe a million per month otherwise thanks for coming on and sharing this
it's amazing what you can build in seven weeks with the right idea thanks for coming on yeah
thank you for having me guys all right gus producer of starter story what'd you think of this one
that was cool i mean i don't know anything about peptides so first of all i feel like i learned a
lot and then second i just love seeing a young kid who just kind of like saw an idea built it fast
he talked at the end about like how his friends are like that's kind of stupid or maybe aren't
like fully bought in and he's just like i'm gonna do it anyway so that's kind of like not a big
lesson about everything he shared but that's something that's sticking out to me right now
he sort of mentioned this right at the end i'm not sure if it'll get into the final edit but
he said like i don't know if i would have been able to do this without ai coding tools
this is the kind of classic example of someone who like has a cool idea but maybe wouldn't have
been able to build it or you know would have gotten lost with crappy developer or something
like that even two years ago but he's able to build this with ai tools and you know it's kind
of marketing focused and ideas focused execution focus he mentioned that he just had an idea and
built it as quickly as possible that's usually a sign of a great builder or entrepreneur is someone
who just builds it i mean we've said this over and over again on this channel or whatever but like
really these ai coding tools are really just game changers for regular old people i'm not saying
he's a regular old guy but like me or like him or people who have ideas they can just like go build
it really fast and but yeah that was that's that that was like a it's a good lesson like you can
have any idea and just like everything's there for you to go build just go build it the other
underrated theme of this and hopefully it really comes out in the video because i think it's
probably one of the most important things you can do especially if you're building your first app
is build on a growing trend you get
so much free juice when you do something like that right peptides is one of those trending
things that everyone is talking about if you're in the you know the pop culture or whatever
everyone's talking about it and you're just getting so much free users revenue just by
building on that space let's say he had a really crappy app it still would make money it still
would be successful if you just build it on something exciting rather than something that's
dying like i don't know newspapers or something like that oh i think that is like hopefully the
biggest lesson you can walk away from this video i know your thoughts on that yeah i mean he said
like i just scroll and it's like kind of boring but i think he had sort of this sort of like
magnifying glass i think that most people don't so yeah i think if you're like really wanting to
build something or wanting to like create something like he did you just really have
to have this like magnifying glass on social media instead of just like i don't know brain rotting
people online are always talking about something new or something interesting or something trending
and if you're paying close enough attention you can like you said get that that juice yeah well if
you're looking to build something as well i think a great idea is as you mentioned go on social media
browse it for an hour you might just find something and when you do you got to build it you
got to build that ios app i think building ios apps is a great platform to be building a business
right now and if you're looking to do that check out the link in the description for our ios boot
camp we'll teach you how to come up with an idea build it and get it live and approved on the app
store in just a matter of weeks click that link there down in the description if you
want to check it out otherwise we'll see in the next one peace
you
Podcast Summary
Key Points:
Cedric Roberge, a college student, built Pep AI, a peptide tracking app, and earned $50,000 in seven weeks.
He identified a trending niche by observing social media buzz (TikTok, Instagram) and a friend's interest, finding no successful existing app.
Using AI tools like Replit and Claude, he built the app in about two weeks, with Firebase for backend and Revenue Cat for subscriptions.
Apple's approval process was challenging due to medical advice concerns, but he used expedited reviews to speed it up.
His step-by-step method
Influencer marketing was key—a single Instagram story generated $1,000, and a post with 50,000 views brought $4,000 in revenue, totaling over $10,000 from one influencer.
The app features peptide tracking, dosage calculators, injection site logging, educational quizzes, research library, and lifestyle tools like meal tracking.
His core advice
Summary:
Cedric Roberge, a college student, turned a trending interest in peptides into a profitable app called Pep AI, generating $50,000 in just seven weeks. The idea emerged when his roommate mentioned peptides, followed by TikTok videos on the topic. Noticing a gap in the market—no successful peptide tracking app existed—Cedric leveraged AI coding tools like Replit and Claude to build the app in about two weeks, despite having no advanced technical skills.
The app helps users track peptides safely, offering dosage calculators, injection site logging, educational quizzes, and research resources. Cedric's success hinged on strategic market validation: he analyzed competitor reviews, built a waitlist of 300 users, and collaborated with influencers in the niche before launch. Influencer marketing proved transformative, with one post generating over $10,000 in revenue.
He emphasizes that marketing and distribution outweigh the product itself, advising founders to spot trends on social media, validate demand, and move quickly. Despite Apple's initial rejections over medical advice concerns, he navigated approvals using expedited reviews. Cedric's story highlights the power of AI tools, trend-spotting, and relentless persistence, as he aims to scale Pep AI to $1 million per month, driven by a belief in his vision despite skepticism from peers.
FAQs
Pep AI is an app for tracking peptides safely. It helps users calculate dosages, log injections, track injection sites, and provides research and educational content about peptides.
Pep AI generated over $50,000 in total revenue in its first seven weeks, with an MRR of $11,000 and nearly 2,000 active subscriptions.
It took about two weeks to build the app using AI coding tools like Replit and Claude, plus about a week for Apple's app review process.
Cedric got the idea after his roommate mentioned peptides and he saw trending TikTok content about them. He noticed there was no successful peptide tracking app, so he saw an opportunity.
He analyzed existing competitor apps and their reviews, reached out to influencers to gauge interest, made Reddit posts, and built a waitlist of about 300 people before launch.
Influencer marketing was crucial. One influencer's story post brought in about $1,000 in revenue, and a follow-up post with 50,000 views generated around $4,000 in a single day.
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