Article
AbMaxx: how an ab-workout app reached $40K in 30-day revenue
By Brightiny9Published
How one founder picked a narrow niche, built an abs app, and grew it with one equity partner and ads. Process from Starter Story, numbers from TrustMRR.
AbMaxx picked one narrow wish, visible abs, and built a personalized ab-plan app around it. The founder says he rebuilt it once, dropped paid creators for one equity partner, and scaled with ads. TrustMRR shows $40,787 in the last 30 days (synced 2026-10-31 16
UTC).| Step | What he did | Evidence |
|---|---|---|
| Problem | Saw people at the gym compare abs; found no app built only for abs (2026-02) | Founder's account, Starter Story 2026-10-04 |
| Product | Custom abs plan from a short questionnaire, ready-made ab programs, a body scan | Founder's account |
| Build | Two months in one tool, then a one-month rebuild | Founder's account |
| Growth | Paid creators failed; one equity partner plus ads worked | Founder's account |
| Result | $40,787 revenue in 30 days, $20,502 MRR (2026-10-31 16 UTC) | TrustMRR, third party |
The problem he picked
The founder says the idea came in February 2026 from gym talk: people kept comparing abs, and he found no app built only for that goal. He chose a narrow wish that comes back every summer. He names the target user as 15 to 30 years old. Source: Starter Story interview, published 2026-10-04, checked 2026-11-01.
What the product does
Users answer a short set of questions about their fitness. The app then gives a custom abs plan and pre-made ab programs. It also offers a body scan that estimates body fat. Pricing and paywall details are not on the page.
How he built it
He first built the app in Lovable and spent about two months prompting it. He then judged it not good enough and rebuilt it in about one month with another AI building tool. He lists Supabase for sign-in, PostHog for analytics, Sensor Tower for market research and Sign.com for creator contracts. His own lesson: do not spend two to three months obsessing over the product before launch.
How he grew it
- Month 1: just over $7,000 in revenue (his figure). He paid fitness influencers for UGC videos. He calls this one of his biggest mistakes. Margins were about 5 to 10 percent.
- Pivot: he gave one large fitness influencer equity instead of paying per video. That person makes content, and he runs paid ads behind it on Meta.
- Scale: he cut every other creator deal. Meta ads returned 2 to 2.5x ROAS, he says. The same videos on TikTok returned 4 to 5x, which he puts down to TikTok's younger audience.
If ROAS means revenue per dollar of ads, ad spend is 40 to 50 percent of ad-driven revenue on Meta and 20 to 25 percent on TikTok. That is our arithmetic on his claim, not a number from either page.
What the numbers say
The interview (2026-10-04) says the month was "just about 55,000" (Starter Story, checked 2026-11-01). TrustMRR shows $40,787 over the last 30 days, $20,502 MRR, $183,685 all-time revenue and 5,685 active subscriptions, synced 2026-10-31 16
UTC (checked 2026-11-01). It says it reads these through a RevenueCat API key. The figures change as TrustMRR re-syncs. The interview and TrustMRR cover different windows, so both can be right. On TrustMRR's markdown page, the 30-day figure is down 22.6% and the app is listed for sale at $1,000,000 (2026-10-31).We did not check RevenueCat, and TrustMRR does not say how it separates MRR from 30-day revenue.
What a small maker can copy
- Pick a narrow wish that comes back every year. Abs fit that.
- Test demand before building. He advises posting faceless TikTok slideshows for about seven days and asking people to comment "app". The page does not say he did this himself.
- Ship early. His advice: try to ship in seven days or less, and improve the product after launch.
- Try creators cheaply first. He suggests small creators, about $100 for 10 videos (his advice, unverified).
- Give one partner equity, then pay for ads behind their content.
Our view: the useful part is the order, not the revenue number. Niche, demand test, fast launch, one aligned partner, then ads on what already works. We did a similar check on another founder's revenue claim, dated 2026-10-17.
What we could not confirm
| Item | Status (2026-11-01) |
|---|---|
| Ad returns (2 to 2.5x Meta, 4 to 5x TikTok) | Founder's claim, no third-party check |
| Start date | Interview says February 2026; TrustMRR lists a 2026-03-18 founding date. We don't know which is right |
| Equity deal terms | Not stated |
| Pricing and paywall | Not on the page |
| Why MRR is about half of 30-day revenue | Not confirmed |
How we researched this
Researched from public pages on 2026-11-01: the Starter Story interview page and TrustMRR (web and markdown versions). We did not test the app, speak to the founder or check RevenueCat or the app stores.
Changelog
- 2026-11-01: First published as a claim check.
- 2026-11-01: Rewritten as a process case study. TrustMRR numbers updated to its 2026-10-31 16 UTC sync.