I scaled Cal AI from nothing to $30M ARR in 18 months. And if I...
Jake Castillo@jakecastilloooo
8 views
Jul 08, 2026
Advertisement
1
I scaled Cal AI from nothing to $30M ARR in 18 months.
And if I were starting a consumer app today…
I'd pick a niche that already has millions of obsessed people and an army of cheap creators.
Here are the top 7 consumer app niches I'd build in right now (ranked):
And if I were starting a consumer app today…
I'd pick a niche that already has millions of obsessed people and an army of cheap creators.
Here are the top 7 consumer app niches I'd build in right now (ranked):
2
#7: Female Health
One of the fastest-growing markets out there.
This niche is expanding rapidly and the audience is loyal and vocal.
And you won’t have to educate people on the problem, because they're already searching for solutions with their credit cards handy.
One of the fastest-growing markets out there.
This niche is expanding rapidly and the audience is loyal and vocal.
And you won’t have to educate people on the problem, because they're already searching for solutions with their credit cards handy.
3
#6: AI Agentic Apps
Build any app with agents that automate the boring parts of day-to-day life.
The demand is exploding and the content around it writes itself.
There’s massive upside and market share for anyone who builds something that actually saves people time.
Build any app with agents that automate the boring parts of day-to-day life.
The demand is exploding and the content around it writes itself.
There’s massive upside and market share for anyone who builds something that actually saves people time.
4
#5: Education + Skill Coaching
People are obsessed with self-improvement, & creators in every skill vertical already have engaged audiences.
That means built-in demand & cheap distribution.
You’re plugging into an existing movement instead of trying to start one from scratch.
People are obsessed with self-improvement, & creators in every skill vertical already have engaged audiences.
That means built-in demand & cheap distribution.
You’re plugging into an existing movement instead of trying to start one from scratch.
5
#4: Photo / Video / Creative Utility
Everyone's a creator now, and they all want to look better doing it.
Huge audiences, new tools coming out all the time, & plenty of creators you can partner with at fair prices.
Solve just one annoying creative problem & people pay happily.
Everyone's a creator now, and they all want to look better doing it.
Huge audiences, new tools coming out all the time, & plenty of creators you can partner with at fair prices.
Solve just one annoying creative problem & people pay happily.
6
#3: Health & Fitness
The cult-like following here is unmatched.
There’s entire ecosystems of creators pumping out content daily, and audiences care about their health more than ever.
You're operating inside one of the strongest existing niches on the internet.
The cult-like following here is unmatched.
There’s entire ecosystems of creators pumping out content daily, and audiences care about their health more than ever.
You're operating inside one of the strongest existing niches on the internet.
7
#2: Personal Finance Micro-Tools
Consumers want control over their money without needing a full-blown finance degree.
The audience is massive, the content is everywhere, and small focused tools win.
Just solve one specific money headache and you can make bank.
Consumers want control over their money without needing a full-blown finance degree.
The audience is massive, the content is everywhere, and small focused tools win.
Just solve one specific money headache and you can make bank.
8
#1: Productivity
The biggest, most durable niche of them all.
Endless obsessed audiences, too many creators to count, and a TAM that only grows as more work goes digital.
You're immediately stepping into a market that's already begging for better tools.
The biggest, most durable niche of them all.
Endless obsessed audiences, too many creators to count, and a TAM that only grows as more work goes digital.
You're immediately stepping into a market that's already begging for better tools.
9
When evaluating what niches have the most upside, there are 4 factors that matter:
1. An expanding market
2. Cult-like audiences
3. Cheap creators
4. Existing demand
Pick a niche with all 4, nail your distribution, and you’re well on your way to a profitable app.
1. An expanding market
2. Cult-like audiences
3. Cheap creators
4. Existing demand
Pick a niche with all 4, nail your distribution, and you’re well on your way to a profitable app.
10
If you enjoyed this breakdown...
I go deeper with more tactical insights and lessons on AI, scaling consumer apps, and business in my newsletter.
It's called Operator's Notebook, and you join 800+ weekly readers at the link in the comments (it's free).
I go deeper with more tactical insights and lessons on AI, scaling consumer apps, and business in my newsletter.
It's called Operator's Notebook, and you join 800+ weekly readers at the link in the comments (it's free).
11
12