B2C · AI learning app
How Sizzle AI grows
11 tactics and 20 figures from 1 interview.
Sizzle AI is a study app for students, launched through the network of its founder, a former Facebook VP of AI. Its growth guest described a loop of cheap tests: many organic creator videos, small ad spend behind each to find the rare winner, then paid traffic used to run fast paywall and funnel experiments. Most results were stated as anecdotes, with a few reported figures.
- Sizzle put $1-$20 of ads behind each organic creator video and judged them within hours on clicks; about one in 20-30 stood out, and the winning TikTok drove hundreds of purchases as an ad.Sizzle AI
- That winner, from a JoinBrands creator, opened on a silent shocked face, demoed the app and ended on a goofy twist with no call to action; it got 79K likes and beat the same creator's other endings.Sizzle AI (1)Sizzle AI (2)
- Using its best ad to buy test traffic, Sizzle ran three- and four-way paywall tests within days and reported cost per purchase falling from about $500 to $300.Sizzle AI
- Mapping each funnel step, the team found one losing over half of users; fixing it reportedly brought 2-3x more users to the next step, against about 10% gains from new features.Sizzle AI
- Switching ads off and on and comparing attribution sources, the guest said real purchases usually came to about double what ad platforms reported, which justified scaling further.Sizzle AI
- A social-proof sign-up screen raised engagement and purchases in some groups but was neutral overall once assisted conversions were counted.Sizzle AI
Summary written 2026-09-26 from the tactics below. Figures are as founders stated them.
About Sizzle AI
- What it is
- AI learning app grounded in learning science, tailored to each learner
- Who it's for
- Students and any learner; tested teachers and tutors as an ad audience
- Business model
- Subscription with paywall; free trial offered in some countries
- Launched
- ~mid-2024 (over a year before the August 2025 episode)
- Team
- Founder is a former Facebook VP of AI; Yev runs all growth
As described in the interviews, not independently verified.
Sizzle AI's 11 tactics
Sizzle AI by the numbers
| Metric | Value | Context | Said in |
|---|---|---|---|
| drop off | 50% approximate | Largest single funnel step drop-off the team focused on (over 50%) | The Superwall Podcast 2025-08-042:42 |
| growth rate | +2–3 x approximate | Users reaching the next funnel stage after fixing the biggest drop-off, vs ~10% gains from feature optimizations | The Superwall Podcast 2025-08-043:17 |
| count | 79K likesper video | Likes on the showcased creator TikTok (JoinBrands creator) later amplified as a paid ad | The Superwall Podcast 2025-08-048:42 |
| count | 20–30 videos approximate | Organic creator videos it took to find one clear winner | The Superwall Podcast 2025-08-0411:27 |
| new customers | hundreds of purchases approximate | Purchases attributed to the single winning TikTok creative run as a paid ad | The Superwall Podcast 2025-08-0419:42 |
| cpa | USD 200per purchase goal | Lenient cost-per-purchase target for ads whose job is feeding data into onboarding/paywall tests | The Superwall Podcast 2025-08-0416:22 |
| cpa | USD 50–100per purchase goal | Cost-per-purchase goals for profitability-focused ads (US targeting); $50 and $100 tiers | The Superwall Podcast 2025-08-0416:22 |
| conversion rate | 1% approximate | Install -> purchase on traffic sent into the onboarding flow | The Superwall Podcast 2025-08-0417:02 |
| cpa | USD 500per purchase approximate | Cost per purchase before rapid in-app testing (varies by targeting) | The Superwall Podcast 2025-08-0418:19 |
| cpa | USD 300per purchase approximate | Cost per purchase within days of 3-4-way paywall and in-app experiments on winning-ad traffic | The Superwall Podcast 2025-08-0418:19 |
| churn | 3–7 months approximate | Average subscriber lifetime used to estimate LTV | The Superwall Podcast 2025-08-0418:50 |
| ltv | USD 30–70per purchase estimate | Estimated value per purchase; higher for some products, countries and iOS | The Superwall Podcast 2025-08-0418:50 |
| share | 20% approximate | Part of paid traffic held to profitability targets; the rest used for aggressive in-app testing | The Superwall Podcast 2025-08-0419:19 |
| count | 10 headlinesper creative approximate | Headline variants tested on one winning creative | The Superwall Podcast 2025-08-0419:19 |
| attribution gap | 2 x estimate | Real purchases vs purchases reported in the ad platform (usually about double) | The Superwall Podcast 2025-08-0422:11 |
| share | 10% approximate | At least this share of purchases arrive later than 1 day after the ad (1-day vs 7-day window) | The Superwall Podcast 2025-08-0422:44 |
| share | 10–20% approximate | Extra purchases seen via SKAN and other attribution methods beyond platform-reported | The Superwall Podcast 2025-08-0422:44 |
| share | 10–20% approximate | Additional spillover purchases (saw ad, later searched the App Store) seen in App Store Connect analytics | The Superwall Podcast 2025-08-0423:19 |
| count | thousands of ads approximate | Ads running across ad groups | The Superwall Podcast 2025-08-0423:45 |
| conversion rate | +10 x approximate | Purchase conversion of users who start with a particular product/journey vs users roaming the app | The Superwall Podcast 2025-08-0424:52 |
Topics
Interviews
- Yev Marusenko - How I Grow Viral Apps to 1M+ Downloads (just copy me) · The Superwall Podcast · 2025-08-04