App Teardown · AI Calorie / Fitness
Cal AI
Photo-based AI calorie tracker. Ran 123 paywall experiments across 46 trigger points before being acquired by MyFitnessPal for ~$50M ARR.
4.80447 ★(315K)·Launched2024/05/01·Verified2026/05/14
PaywallHard
Trial (CC req.)3d
Onboarding steps29
Trigger points46
Hidden pricingDynamic pricingSpin wheel
- Category
- Health & Fitness
- Downloads
- 15M+ (2026)
- Est. MRR
- $5.7M (2026-01)
- Acquired by
- MyFitnessPal (2026-03)
- Origin
- US
TL;DR
Cal AI is a photo-based calorie tracker that launched in May 2024 and was acquired by MyFitnessPal in March 2026 at an estimated ~$50M ARR. Its real moat is not AI accuracy (founders admit ~80%); it is treating the paywall as a product surface, shipping 123 experiments across 46 trigger points in the first 10 months.
Core Flow
Screenshots
Paywall & Pricing
Pricing tiers
| Plan | Price |
|---|---|
| Yearly UnlimitedMost common offer | $29.99/yr |
| Yearly (A/B variant)Special Gift variant | $19.99/yr |
| Monthly | $9.99/mo |
| Monthly (A/B variant) | $5.99/mo |
| WeeklyA/B variant | $2.99/wk |
| Family PlanUp to 5 members | $59.99/yr |
| Streak Restore | $0.99one-time |
Teardown Notes
What indie devs can copy
- 3-day trial + required payment info
- Quiz-based onboarding (10–20 questions is enough; you do not need 29)
- Hidden pricing until the end of onboarding
- Loading screen that primes anticipation
- Personalized result used as an anchor
What requires scale to copy
- 46 trigger points across the app
- Dynamic pricing — needs traffic to A/B credibly
- Spin-wheel paywall — Superwall paid feature
- 150+ creators on retainer (the influencer playbook)
Tech stack guess
- Paywall infrastructureSuperwallConfirmed
- Subscription stateRevenueCatLikely
- Web checkoutStripeConfirmed
- Mobile billingApple IAP + Google Play BillingConfirmed
- AI modelsAnthropic + OpenAI (image recognition + RAG)Confirmed
- AnalyticsAmplitude / Mixpanel + Superwall built-inSpeculation
Sources
- 1.Superwall case study: Cal AI— Official.
- 2.TechCrunch: Cal AI built by two teenagers— News.
- 3.CNBC: How a teenage CEO built Cal AI— News.
- 4.Growthcurve playbook: Three engines and an exit— Research.
- 5.App Store listing— Official.