Five apps making real money in niches most people walked right past. Revenue numbers are third-party estimates.
1. "What's actually in this food?"
Olive — Holistic Food Scanner · ~$500K revenue · 200K downloads · 4.83 rating · Jan 2025
Not a calorie counter. Olive scans food barcodes and tells you about the ingredients — additives, preservatives, chemicals, the stuff clean-eating people lie awake thinking about. 20K reviews, almost entirely 5 stars.
The insight isn't nutrition. It's fear. People on clean diets, keto, or just trying to avoid seed oils don't trust labels. They want someone to translate them. Olive charges a subscription and people happily pay it.
The "what's in this" question works for anything with ingredients people don't recognise. It's not a calorie problem — it's a trust problem.
Cosmetics and skincare version — same fear, completely different product aisle
A "clean pantry" score for your whole kitchen, not just one item at a time
Restaurant menu scanner — flag dishes with additives before you order
Browser extension that warns you while shopping on supermarket websites
2. The eating out gap
MenuFit — Healthy Eating Out · ~$400K revenue · 200K downloads · 4.80 rating · Aug 2025
Every calorie-tracking app is built around cooking at home. MenuFit solves the actually hard part: you're at a restaurant, you have one minute to order, and you don't want to blow your diet. 21K reviews and still climbing.
There are over a thousand food tracker apps. Almost none are built around eating out. The gap was sitting there in plain sight.
People eat out 3–5 times a week and every existing nutrition app treats that as an edge case. It's not.
Alcohol calorie tracker — the one category every diet app quietly avoids
Parent restaurant guide — what's actually decent for kids to eat here
"Sober curious" bar menu navigator — non-alcoholic options at regular bars
Corporate travel version — frequent flyers stuck eating airport food every week
3. The "we found you money" app
Settlemate — Class Actions · ~$600K revenue · 300K downloads · 4.89 rating · Jan 2025
Settlemate monitors active class action lawsuits and tells you when you're eligible to claim — a data breach you're part of, a product you bought, a company you worked for. 37K reviews, nearly five stars.
Most people are owed money from class actions right now. They don't know it, they'll never file, and it expires. Settlemate does the monitoring and walks you through the claim. It charges a subscription to track this for you.
People leave money on the table constantly — not out of laziness, but out of not knowing. Build the app that closes that gap.
Rebate and cashback tracker — find manufacturer rebates before they expire
Unclaimed property finder — states hold billions in forgotten accounts and assets
Government benefits eligibility checker — what are you entitled to that you're not claiming
Wage theft claim assistant — many workers are owed unpaid overtime and don't know it
4. The AI photoshoot
Pose — AI Photo & Video Generator · ~$2M revenue · 2M downloads · 4.66 rating · Feb 2025
Not filters. Not editing. Pose generates photos and videos of you in different poses, lighting setups, and locations using AI. It hit $2M in revenue and 135K reviews in its first year.
The audience is anyone who wants better content but isn't a photographer: influencers, people on dating apps, job hunters, small business owners. The AI headshot space was supposed to be saturated — Pose found the non-headshot gap inside it.
Every category of person who needs professional photos but can't afford a photographer is an audience. And there are a lot of those categories.
LinkedIn headshot generator — "professional-looking in 5 minutes"
Small business product photography — flat lays and lifestyle shots, no photographer needed
Dating profile feedback — not just generation, but analysis of what's hurting your matches
Podcast/YouTube thumbnail tool — same face, optimised for clicks
5. The phone-as-health-device play
Health Scan — Heart & Sugar · ~$600K revenue · 500K downloads · Mar 2025
Point your phone camera at your fingertip. The app estimates your heart rate and blood glucose trends. No hardware, no wearable, no $300 device. $600K in less than a year.
These apps are technically controversial — accuracy varies and the disclaimers are long. The market doesn't care. People want health insight without buying anything extra. The phone camera is already in their pocket.
If a camera can estimate heart rate, what else can it estimate? The list is longer than you'd think, and most of those apps don't exist yet.
Blood pressure estimator — research supports camera-based measurement, barely any apps
Running form analyzer — back camera, real-time gait feedback, sports coaching angle
Migraine trigger tracker — link sleep, caffeine and screen time to predict the next one
Breathing rate monitor — camera-counted breaths per minute, tied to stress and sleep
These are real apps making real money right now. The niches aren't random — each one solves a specific problem someone desperately needed fixed. That's always where the opportunity is.
But spotting the idea is the easy part. Finding the right niche, validating it, actually shipping — that's where most people get stuck.
I built madOS to find niches like these before anyone else does. It scans the App Store, estimates revenue, spots gaps, and shows you exactly what's working — so you don't have to guess.
Ship members on the paid plan get full access to madOS, plus my content engine, strategy calls, and a community of founders who are actually building.
$49/mo. One good app idea pays for years of it.
Get madOS + Ship Pro →See you next Monday.
— Eldar