Cal AI
Snap a photo of your food, get an instant AI calorie count, built by teenage founders, bought by MyFitnessPal.
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About Cal AI
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Evidence
The numbers
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The maths, line by line
| iOS app revenueapp.sensortower.com$2,000,000Sensor Tower public app-overview page for the iOS app.see the source ↗ | $2,000,000 |
| Android app revenueapp.sensortower.comSep 2026$90,000Sensor Tower public app-overview page for Google Play package com.viraldevelopment.calai, confirmed against Apple’s publisher and app name for the same business before it was read.see the source ↗ | $90,000 |
| Web revenue, 10.3% of iOS plus Androidsec.govFeb 2026Stripe 10.3%Duolingo, Inc., Annual Report on Form 10-K for 2025, filed 27 February 2026: “Three service providers Apple, Google, and Stripe processed 61.6%, 23.4%, and 10.3% of total revenues for the year ended December 31, 2025, respectively.” Payday AI reads Stripe as the website checkout and Apple and Google as the app stores, and adds that 10.3% unrounded. It is a general correction, not a measurement of this business.see the source ↗ | $215,270 |
| Total | $2,305,270 |
What the industry publishes for this niche
Measured on Subscription apps in the Health & Fitness category. Payday AI’s estimate above does not use them. They are here so you can see how this business compares.
| Install to Paying Subscriber conversion rate (within 35 days)revenuecat.comMarch 20262.9% to 6.2%RevenueCat, State of Subscription Apps 2026see the source ↗ | 2.9% to 6.2% |
| Free Trial to Paying Subscriber conversion raterevenuecat.comMarch 202637.7% to 51.4%RevenueCat, State of Subscription Apps 2026see the source ↗ | 37.7% to 51.4% |
Demand
The trends behind it
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Locked. Subscribe to see this section.Get startedUS$30 a month →Growth
How it grows
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How they actually got customers
How they launched
“I find these two underground kind of undiscovered creators I pay them each $50 for promo so $100 total and overnight 5 10 million views total 45,000 downloads in that first big day ... 500,000 downloads on the month we're at 80k Mr from the jump”
– Blake Anderson, Cal AI co-founder, describing his app portfolio
Said by the founder on video, Dec 2024. Result stated: Founder-stated: two $50 creator posts drove 5-10 million combined views overnight, 45,000 downloads on day one, and 500,000 downloads with $80k MRR by the end of month one. The source presents this as the direct launch trigger; it does not separate the two posts' effect from the app's own onboarding/paywall once installs started, and it is described for the founder's app portfolio, not confirmed as Cal AI alone.
Described by co-founder Blake Anderson about his three app portfolio (Rizz GPT, Umax and Cal AI), not about Cal AI alone.
working with creators and influencersTikTokInstagramApp Storepromoted by influencerrun by creatoracquisitionpaid
How they did it
- Found two relatively unknown ('underground') creators rather than paying for big-name influencers.
- Paid them $50 each, $100 total, for a single round of promotional posts.
- The posts drew 5-10 million combined views overnight.
- That produced 45,000 downloads on the first day and 500,000 downloads in the first month, with the app at $80k MRR from the launch.
$100 total: $50 to each of two creators, for one round of posts. · Stopped
How they scaled
“internal ugc is great ... you usually see somewhere around like 50 to 80% profit margins”
– Blake Anderson, Cal AI co-founder, describing his app portfolio
Said by the founder on video, Dec 2024. Result stated: around 50 to 80% profit margins.
Described by co-founder Blake Anderson about his three app portfolio (Rizz GPT, Umax and Cal AI), not about Cal AI alone.
customer-style content (UGC)TikTokYouTube ShortsApp Storerun by employeeawareness
How they did it
- Make short-form video content in-house, not commissioned from outside creators, in the same casual, native style as paid creator content.
- Post it from the brand's own account rather than a creator's.
The founder frames it by margin instead, internal UGC nets roughly 50-80% profit margins in his account, versus paying outside creators. · Still running
“people doing influencer marketing you usually see somewhere in the range of like 25 to 70%”
– Blake Anderson, Cal AI co-founder, describing his app portfolio
Said by the founder on video, Dec 2024. Result stated: range of like 25 to 70%.
Described by co-founder Blake Anderson about his three app portfolio (Rizz GPT, Umax and Cal AI), not about Cal AI alone.
working with creators and influencersTikTokInstagramApp Storepromoted by influencerrun by creatoracquisitionpaid
How they did it
- Continue paying influencers for promotion beyond the initial launch batch, on an ongoing basis, sized so it nets a 25-70% profit margin in the founder's account.
The founder gives a margin range (25-70%) rather than a spend figure.
“you should use super wall super wall enables you to split test different offerings so different price points”
– Blake Anderson, Cal AI co-founder, describing his app portfolio
Said by the founder on video, Dec 2024.
Described by co-founder Blake Anderson about his three app portfolio (Rizz GPT, Umax and Cal AI), not about Cal AI alone.
changing the priceproductrun by employeeconversion
How they did it
- Run the paywall through a third-party split-testing tool (Superwall) rather than a custom-built one.
- Split-test different price points and offer configurations against each other on that paywall.
Ran continuous paywall tests across onboarding, feature gates and win-back flows
“We treat paywalls the same way we treat the product, ship something, measure it, and improve it tomorrow.”
– Zach Yadegari, Cal AI co-founder
Reported by an outside publication, Apr 2026. Result stated: Superwall reports over 3x monthly revenue growth in 10 months and a +31% relative improvement in trial-to-paid conversion over 12 months. Its iOS funnel figures are 87% of new users seeing a paywall, 57% of paywall viewers starting a transaction, and 63% of started transactions completing.
changing the priceproductrun by employeeconversion
How they did it
- Used remotely configurable paywalls so pricing, design, messaging and placement tests did not have to wait for an App Store review.
- Ran 123 A/B experiments on iOS across 160 unique paywall designs, 424 total variants and 46 trigger points.
- Ran 61 experiments on the onboarding paywall, testing layouts, offer framing, pricing presentation, urgency and creative direction.
- Extended tailored paywalls to abandoned checkouts, feature gates, win-back flows, lifecycle messages and upsells rather than relying on onboarding alone.
The case study gives no dollar cost for the testing program or Superwall subscription. · Started Mar 2024
Fit
The shape of this business
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Locked. Subscribe to see this section.Get startedUS$30 a month →Seven employees at the March 2026 acquisition, per two outlets covering the deal: TechCrunch, 2 March 2026 (seven employees, with a separate team of contractors alongside them) and Forbes, 6 March 2026 (the seven employees at Cal AI joined MyFitnessPal). sourcesThe contractors are named but not counted. The widely repeated 'around 30 people' (Inc., 2 March 2026) is the whole team including them.
Reported as bootstrapped and self-funded ahead of the MyFitnessPal acquisition; no funding round found.
Grew through product virality and the founder's own public build-in-the-open tweets, not a pre-existing audience.
Founder
More startups from Zach Yadegari and Blake Anderson
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Locked. Subscribe to see this section.Get startedUS$30 a month →Locked. Members see when each figure was captured.
Locked. Subscribe to see this section.Get startedUS$30 a month →- 1 Sep 2026 Payday AI’s own estimate recalculated
- 13 Aug 2026 Captured: Independent app revenue estimate (Sensor Tower)
- 11 Aug 2026 Captured: Revenue run-rate, stated by the founder on X
- 2 Aug 2026 Captured: Cumulative revenue milestone, stated by the founder on X
- 2 Aug 2026 Captured: Single-day revenue, stated by the founder on X
- 2 Aug 2026 Captured: App Store rating average
- 2 Aug 2026 Captured: App Store ratings count
- 2 Aug 2026 Captured: iOS app price (base download)
- 2 Aug 2026 Captured: Highest observed in-app subscription price tier
- 2 Aug 2026 Captured: Original App Store release year
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Your version
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