I Can't Believe This App Makes $100K/Month

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I Can't Believe This App Makes $100K/Month

Starter Story

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Jul 19, 2026

Michael built one of the most unbelievable app ideas I've ever seen. And today he makes over $100K per month. But the real story is the IDEA. What's the secret? How does it make money?

So in this video, we break down how Michael found this unbelievable app idea and the framework any builder can use to find their own crazy app ideas too.

Free: 100+ App Ideas in Health, Wealth & Self-Improvement: https://clickhubspot.com/vq21

Follow Michael: https://twitter.com/michaelque22
Check out Go Tall: https://www.gotall.app/

🔔 Follow the Second Channel: @StarterStoryBuild
🏁 We're hiring: starterstory.com/jobs

This video is an educational case study of this founder’s experience. It is not financial advice and does not guarantee any income or results. Every business is different and your results may vary.

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When I heard about this app idea I started cracking up because I thought there's no way this thing actually makes any money until I found out just how much it was making

I am 20 years old

I built an app called Go Tall that now makes on average about 100K a month

This is Michael

He's a 20 year old college student who came across his idea inside the comments of a TikTok video

Instead of continuing to scroll he decided to build the thing and it worked

After two days of launching it I already had the first sale

I asked Michael to come onto the channel to break this all down

In this episode we'll dive into his unbelievable app idea that makes 100 000 every month how he knew before that this was an idea that could blow up and his advice for finding other mobile app ideas that can make over 100 000 a month

All right This is one you cannot miss

I'm Pat Walls This is Starter Story

right Michael

Welcome to the channel

I am super pumped to have you and talk about this super cool app that you built

So tell me who are you

What'd you build

And what's your story

So my name is Michael

I am 20 years old in college

And last summer I built an app called Go Tall that now makes on average about 100K a month

So yeah I'm excited to share about the idea behind it how I came up with it and just walk you through my growth strategies

All right So you're doing 100K per month with a height predictor app

I don't really even know what that means but we're going to get all into it

I'm super excited to talk about it

But before we do let's prove this

I want to make sure that this is legit

Would you be able to pull up some of your revenue numbers your website show me what the app does and show me how much revenue this thing's actually making

The premise of the app is more so that it is a height prediction app

And then we try to put things on there to help teenagers better optimize their habits

And hopefully through that they can naturally actually reach their max potential height

It's a pretty standard subscription

We have a 35 yearly 5 weekly plan

And then if users don't want to pay that we have sort of a freemium onto our app where they can still access different features

This is my Apps for Connect by sales

This is my daily sales from January till now

This is my super wall of new users broken down by monthly

Yeah so I have about 700 000 downloads on the App Store and then a couple hundred thousand on Android as well

So it adds up to be about a million downloads overall

Thanks for sharing that

Hundred thousand dollars a month with an app

You mentioned that you are still in college and you're 20 years old

That's absolutely crazy

So I got to hear how do you get here

Like how do you get to the point where you haven't even graduated college and you have this app that is making over a hundred thousand dollars a month

Yeah you know I was student at NYU

I was a finance student

I was recruiting for the jobs and I basically got rejected from like all of my dream jobs at the time

I was really seeing

So it was last summer

I was seeing a lot of startups take off on good marketing

And I just felt like I could do it myself as well

When I was a teenager I was developing my own apps even before like AI but I was just never really good at marketing

And I thought to myself I had to learn marketing

And so I was just doing any app idea that I could find

This was one of the first ones I thought had potential

And I was like even if this app failed at least I would come out with the skills of like how to do marketing

I love Michael's approach to finding ideas and thinking about customer pain points

His idea is proof that literally any app idea can make money if you think about it the right way

But I think one of the secrets behind this app success is simply that it's built in a pretty smart category which is health and self improvement apps

I think this is a great place to be building

And it's exactly why I put together the health wealth and self improvement app ideas database

Inside this database you'll find over 50 successful app ideas in this space

And we'll break it all down including monthly revenue startup costs tech stack and the real data behind these actually successful businesses

If you're looking for your next idea or you're looking for a good problem to solve just head to the link in the description

You can grab the database 100 for free

All right let's get back to the episode

One of my favorite stories when I hear founders who you know suffered some sort of rejection like you didn't get your dream job you're looking for

So you said screw it I'm going to go build apps

Similar story for me is I was working in a job that I didn't like

I just wanted to build something cool

I wanted something different

So that's that's awesome

Let's let's move a little bit to the idea because this idea is crazy

It's almost preposterous this height predictor app but it's obviously crushing it

So let's talk about how did you find this idea

And then second how did you know it was a good idea and worth like throwing everything into

I first saw this idea when I was looking on website literally websites like acquire com because I was like I don't know any good ideas

I want to find a validated idea

And I saw an app that's pretty similar to this for sale for around 20 000

And then I thought to myself like wait actually this is definitely a real problem because I was when I was 13 years old I was looking up like height calculator on Google or something

So that's when I began like building it

And then I remember like after two days of launching it I already had the first sale

And that was also a huge amount of validation for me because I didn't even get that many views

And I was like wow people really want this

And then the second thing is that on TikTok if you just look at any sort of height video in general I would see people saying like oh I am six foot

I'm 15

My mom's this height

My dad's this height

People just want to give that information

information And I assume like they wanted to get predicted

And so one of my first viral formats was just replying to those comments and predicting their height

Dude that's super cool

There's two things you mentioned that I think are like really cool is that you went on acquire com and you found an idea that was already proven

You didn't buy it I'm assuming and you went and just built it yourself

You've talked to other founders who have done the same thing

So I think that's a super cool little tactic that you mentioned there

But more importantly what you did is you remembered a personal problem that you had and then you further validated that because you're a little older now

Then you further validated that by going into actual TikTok comments and further validating that people were experiencing these problems

All good business ideas come from problems solving problems

So I think that's super cool

On that note what would be your advice for other people who are watching this right now who want to find an app that's crushing it like yours

What would be your advice for those people watching right now

I would say there's just like so many more ideas that can be successful that people thought

I feel like a lot of people they see that some ideas already existing and then they're just like oh I'm out

I'm not going to build this anymore

Whereas even in today's age there's still calorie trackers doing 30K a month when you have Cali

That does not make sense to me at all

And I feel like just seeing that sort of phenomenon happening it just proves that no idea has already done before

And you can always try to do the same idea someone else did and still make it successful with your own tweaks and things like that

The other thing you want to make something that really hits with people's needs

I had my TikTok and I would have like 10 20 DMs a day of people requesting their height to be predicted

People were like really care about this like height prediction thing

There's some problems that you can really just see

And you're like wow this is an actual painful problem

I think the Maslow hierarchy of needs is a really good framework for like what do people like want

If you think about your app idea ideally it can fit into like one of these categories

The more like things it hits the better

So for example for me the height prediction app one it hits the esteem part because people want to know that they're going to be tall because they want you know respect from other people

Height is that and also love and belonging

Maybe they feel like you know getting tall is the only way they can get like a girlfriend

It hits two of the five

When you think about your app and think about the Maslow's hierarchy of needs you can better think about like oh is my app actually going to be useful to people

OK so you mentioned something again we're thinking about apps that have demand and you clearly had demand

And you mentioned something really key here is that like you notice that people really cared

They cared about their height

They cared enough to send you a DM

Often a lot of times when we build startups we build something and then we get no DMs

So that's just such a key insight there that you notice because you're getting those DMs you notice that people cared

Therefore it was an app that could make one hundred thousand dollars a month

month So I think that's super cool and kind of low key genius

Let's move on to the growth because obviously anybody can build a height predictor app

I could probably do it in a few hours with my cloud code right now

How did you get this app users and ultimately get it to one hundred thousand dollars a month

First it was me just making content myself

It took about a month of just experimentation purely with content

I'm making 10 tech talks every day

So then eventually I found the format because I only had one format

I had one distribution channel

It's very easy to see the attribution

Like I know exactly a hundred K views equals how many downloads

And then based on that I'm like OK now I know I can hire creators for this amount of price

With the format I replicated it myself on like two different accounts and they both blew up

I had my girlfriend do it too

And like her account blew up

And I was like OK this is like an easy format

I can teach anybody

So I just went on DM like 50 people a day to be like hey would you want to make format make this video

It's super easy

And so they were able to they were willing to do it for a very cheap price

Basically just myself plus a few UGC creators were able to do maybe like three K a month

After I optimized my paywall and scaled a little more it was about 10 K a month

In month five it was about 30 K a month as I explored even more formats

And after 30 K a month it was simply just putting it on paid ads to scale over a hundred

Yeah that's this is the classic playbook that we hear a lot these days

Now as you kind of crack UGC you figure out what kind of organic content works and then you just put ads behind that content that you know already works and then it works even better with ads

So that's super cool

Thanks for sharing that

Let's talk about the tech stack

What's the tech stack behind this app that makes over one hundred thousand dollars a month

Yeah I'd say the tech stack is very cheap

Use Xbow to make it so that's both iOS and Android Superwall for paywalls

And then we use Adapty as well in order to get advanced payouts since you know Apple's payout cycles are brutally long

And then I use a MMP

I use a singular MMP for three cents per install

Cool Simple tech stack

OK now I'm excited to see the app

I like talking about the idea how you built it the growth all that stuff

But now I want to see what this app is

Can you show me the height predictor app that makes one hundred thousand dollars a month and give me just a demo of how it works so we can see

What I'm most proud of is the onboarding

Basically as I'm predicting the height the users kept on giving like more of their own information to the comment because they want a more accurate high prediction

And so that just resulted in the onboarding being like super long

The more information that you can get the more predictive of the height you could be

Exactly And then the app actually does in the beginning it didn't but it actually pulls a lot of like research papers to actually give the high prediction

So the base is like the CDC data of like you know whatever your doctors gives you at the doctor's appointment

But then all these other questions have like links to research studies that we use to adjust your like final height

So this is like a puberty quiz

This will see like where you are in puberty and that will have a very big effect of like how much you actually are

And this payroll has about like a ninety one percent payroll show rate despite being pretty long

Yeah I'm kind of just skipping over everything because I've seen this like a hundred times

And do you have to pay and subscribe for the app to see the ultimate prediction

Yes correct

So that part is paid but you can do sort of you know stretches you know you can scan meals and you can log your sleep

And the whole thing is that your high prediction is going to like change as the weeks go by

The more you actually log in on the app since like we can see how much you've been growing it will actually give you like the most accurate high prediction

You get them in the door with this high prediction which everyone is excited to see what it is but then you keep them on subscription over

What kind of habits can I do to help potentially

Obviously there's no guarantees you're going to increase your height

It's a lot of genetics and things like that

But maybe there are some habits that can help you you know get a little bit more marginal gain from it

Yeah I'm super happy that like people are really finding value

All right Cool Well thank you for sharing the app

Super cool app Simple app

I like simple I love simple

Hopefully you're watching this and you realize it doesn't need to be complicated to make money and have a successful app

Last question that we ask all founders that come onto the channel

If you go back in time to you know younger Michael when you're interviewing for jobs you got rejected from your dream jobs

You wanted to build something

What would be your advice to younger Michael before you built this app or for anybody watching this who wants to do the same

Something that I think would actually be helpful

I am from an environment where people are going to do prestigious corporate jobs or if they're going on the startup space they're going raise billions of dollars from VCs onto some solving some really complex problem

Last summer I basically just got rid of my ego

Doing this high prediction app gives me zero like social status or anything

It's a huge like embarrassment

I remember I would go to people

I'm like yeah I'm building a high prediction app

And people are just like yeah like good luck

Right I feel like there is gems when you're willing to completely let your ego go

Go make the stupid tick tocks

Go do the idea that you think has potential even though it's so unglamorous

So I feel like at least with my story I think that's what's the example of letting yourself away from that social pressure

No that's great advice

And it's really cool that you figured that out at such a young age

There's a saying I can't remember what it is but in order to be successful you need to climb up Cringe Mountain and you need to make it to the top of Cringe Mountain

And once you get to the top of Cringe Mountain then you'll be successful

And I think that's actually a really good advice

And clearly it worked for you

So thanks Michael for coming on

Dude super cool app

So thanks for coming on man

Thank you so much Pat

Pat And thanks for asking all the insightful questions

I had a great time

All right Gus producer of Starter Story

What did you think about this one

Yeah my instant reaction which is why I wanted to have him on the channel was like I always see these

There's this guy on Twitter I follow and it's always just posting random ideas

And I'm always like man who are the people behind this app

This is one of those ideas I saw

And I was like a hype prediction app

Like what is that

How does that make money

How did he find the idea

My reaction is just like just so like unbelievable that people for this

But when he described it I was like it makes a lot of sense

It's not like it's not out of this world

So those are my some initial thoughts

When I first saw when he explained what his app did it's like OK that's cool

And then I was like that probably maybe does 10K a month like kind of maxed out

And he's like oh it does 100K a month

month I was like oh my gosh

And then you're right

I started to put the dots together and think OK well this is a really common problem that all people have

They want to be taller

You want to be taller

The most interesting thing for me was that he actually kind of started by creating content

And when he was creating this content on TikTok super easy content to create

People were messaging him

Hey can you predict my height

Can you predict my height

He saw that and he said hey OK it's cool

They're asking for me to my height and I can make videos about it

That's cool

But I think it can be actually even bigger

Doesn't need to go viral first to know it's going to be something big

People just need to care

Yeah it just reminds me like I think he said this at the end but like whatever

Success is like climbing Cringe Mountain or something like that is what you said

And I feel like that is the number one thing that has held me back

And probably a lot of people watching is like the inability to feel cringe or put themselves out there

share an idea and risk essentially risk like feeling stupid or like you know whatever

getting hateful comments et cetera

But when you if you can get by that like he was saying at the end

doesn't mean you're going to like always obviously make 100K per month

but you're going to find an idea or read a comment or get a weird DM that leads the X Y Z thing

Yeah no it's really easy in hindsight to look back and be like oh that was successful

Of course it was going to be successful

What he mentioned towards the end of our interview what most people don't get

is the amount of insecurity and uncertainty when you first have an idea

when you first have a height predictor app and people look at you like you're insane

To keep going through something like that that's where every founder on our channel shines

That's what it means to be a founder is to push through when nobody believes in you

It feels like it's only risk

You're not making any money and that's it

So on that note if you are looking for ideas like this

I think it's amazing to build anything in the health wealth and relationships space

People experience so much pain and problems in this space

If you can solve those problems I think you can win

So if you're curious we put together a list of over 50 ideas in this space

You can download them for free right now

I put them in the description right there

These are real ideas making real money and you can check them out right now

All right Hope you guys enjoyed this episode

We'll see you in the next one

Peace

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