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Sub Club by RevenueCat

Sub Club by RevenueCat

NewWhat 80M users taught Flo about A/B testing — Mike CharniatsouNovember 11, 2026 · 41 min
Episodes
178
Released
every two weeks
Latest episode
Nov 11, 2026
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About the podcast

Interviews with the experts behind the biggest apps in the App Store. Hosts David Barnard and Jacob Eiting dive deep to unlock insights, strategies, and stories that you can use to carve out your slice of the 'trillion-dollar App Store opportunity'.

Episodes 178

  1. What 80M users taught Flo about A/B testing — Mike Charniatsou

    41 minEpisode 182

    On the podcast: separating paywall wins from business wins, the A/B test that lost twice before delivering a 23% lift, and why you should borrow ideas, not steal solutions.Top Takeaways:🕰️ A subscription …

    Show notes

    On the podcast: separating paywall wins from business wins, the A/B test that lost twice before delivering a 23% lift, and why you should borrow ideas, not steal solutions.

    Top Takeaways:

    🕰️ A subscription doesn't have to start in week one
    40% of subscriptions arriving more than six months after install is a healthy number when you track how each user’s needs change and sell only when something new is worth paying for.
    🧭 Paywall conversion is not your monetization strategy
    A subscription is a lifecycle (trial start, activation, retention), and a conversion win at one step of the funnel can still be a business loss.
    🧮 Check whether your A/B wins actually compounded
    Add up a year of 5–10% reported uplifts, then ask whether the business grew by that much; the gap is the share of wins that weren't real.
    🔎 When a test fails, iterate on evidence, not on an explanation
    An onboarding step lost 10% twice while the team guessed at design fixes; the postmortem found 75% of users hit an "oops, sorry" screen, and the rewrite won 23%.
    📣 Marketing finds the unmet need before product does
    An ad narrative that over-performed in the existing funnel became its own onboarding branch, and a strong revenue driver, once product built for it.
    🧩 Borrow the idea, not the solution
    A paywall pattern that other teams reported as a 10% win was copied pixel for pixel and did nothing, and the Blinkist-style reminder paywall and the trial toggle both failed at two different companies.

    About Mike Charniatsou:
    🗣️Senior Growth Product Manager at Flo Health, the world’s leading period and ovulation tracker, empowering over 400 million women globally to take control of their health. With 77 million monthly active users, including 25% of US women, Flo has become a trusted partner in women's health.

    👋 Linkedin
    🖥️Learn more about Flo Health
    💼 Flo Health Careers

    Follow us on X: David Barnard - @drbarnardJacob Eiting - @jeitingRevenueCat - @RevenueCatSubClub - @SubClubHQ

    Episode Highlights:
    [00:00] Introducing Mike Charniatsou of Flo
    [01:48] Scaling Luna to Nearly $6M ARR
    [02:52] Why Mike Left a CPO Role to Build Again at Flo
    [04:25] Building Web Onboarding Without a Playbook
    [06:27] The Hidden Cost of Web-to-App Funnels
    [07:00] How Growth Changes From Early Stage to Flo’s Scale
    [08:28] What Ad Budget Scale Unlocks for Experimentation
    [09:54] Turning a Meta Ad Insight Into a New Onboarding Goal
    [12:35] Easing the Tension Between Marketing and Product Teams
    [13:52] How Flo Shares Insights Through Weekly Syncs
    [14:36] Why Paywall Conversion Is Not Your Monetization Strategy
    [16:31] When a Hard Paywall Win Led to a Spike in Refunds
    [17:45] How to Tell a Short-Term Win From a Business Win
    [19:19] Balancing Freemium Users and Monetization
    [20:12] Why 40% of Flo’s Subscriptions Come After Six Months
    [23:02] Building Monetization Around a Woman’s Life Stages
    [24:59] Cherishing the Customer Relationship
    [26:29] Measuring Free Trial Experiments With Proxy Events
    [28:22] Learning From Failed Experiments With Evidence
    [29:41] The Perimenopause Step That Went From a 10% Loss to a 23% Win
    [33:25] Why Flo Runs Blackout Tests
    [34:14] Borrowing Ideas Instead of Copying Solutions
    [36:51] Why the Blinkist Paywall Failed at Flo and Luna
    [37:27] The Problem With Adding Streaks to Everything
    [39:21] Mike’s Biggest Win of the Year
    [39:54] Why Partner Mode Failed in Onboarding
    [40:43] Growth Would Be Easier If....

    More content from the RevenueCat family:
    👉 Launched – Our sister show that features indie app developers and solo creators about what it really takes to ship something new into the world: https://www.youtube.com/@LaunchedFM
    👉StartApp School – Practical courses on monetization, growth, acquisition, and everything else that turns an app into a business. Completely free: https://www.startapp.school/
    👉RevenueCat blog: Monthly plans might be your best option: https://www.revenuecat.com/blog/growth/monthly-subscriptions-when-to-offer/
    👉Web-to-app funnels: the complete 2026 guide: https://www.revenuecat.com/blog/growth/web-to-app-funnels/
    👉Is localization the next great growth opportunity for subscription apps?: https://www.revenuecat.com/blog/growth/is-localization-the-next-great-growth-opportunity-for-subscription-apps/
    👉Annual subscriptions for apps: The pros and cons: https://www.revenuecat.com/blog/growth/annual-subscriptions-apps-pros-cons/

  2. How Praktika Built a Profitable $50M ARR AI Business — Adam Turaev, Praktika

    1 h 1 minEpisode 181

    On the podcast: the month they went from $1M to $12M ARR, selling Brazil on career upgrades instead of English lessons, and why you shouldn’t tell influencers how to do their job.Top Takeaways:🔍 Filter creators …

  3. How Cal AI turned creators into a growth machine — Jake Castillo, Cal AI

    1 h 10 minEpisode 180

    On the podcast: the “magic moment” test for whether creators can sell your app, the one number that caps what you can pay them, and why cloning hit apps like Cal AI rarely pays off.Top Takeaways:🥊 Choose …

  4. How WeWard Hit 20M Users Without Paid Ads — Yves Benchimol, WeWard

    1 h 6 minEpisode 179

    On the podcast: growing for four years on press and organic alone, affiliate deals as an underexplored revenue stream, and why deciding to pivot is the hardest part.Top Takeaways:🗞️ A PR retainer can beat paid …

  5. Why BoldVoice Charged From Day 1 and Ignored the Duolingo Freemium Playbook — Anada Lakra

    1 h 5 minEpisode 178

    On the podcast: scaling to $10M ARR with a team of ten, having every employee do two user interviews a week, and why their hard paywall "win" backfired.Top Takeaways:🧪 Trial-start rate is the wrong scoreboard A …

  6. Scaling Meta Ads from zero to $100K a month — Ethan Ethier, Built With Science

    1 hEpisode 177

    On the podcast: scaling Meta ads from zero to $100,000 a month, why they waited a year after launch before buying ads, and how a pricing page experiment shifted users toward annual subscriptions.Top Takeaways:📉 …

  7. $10M ARR Without Ever Testing A Paywall — Luke Martin-Fuller, Visible

    1 h 12 minEpisode 176

    On the podcast: hitting $10M ARR without ever testing a paywall, paying their own customers to help make video ads, and why you might want to turn away some potential customers.Top Takeaways:💸 You can reach …

  8. Why He Crowdfunded Millions Instead of Raising VC — Jelte Liebrand, Savvy Navvy

    1 h 7 minEpisode 175

    On the podcast: crowdfunding millions of dollars to accelerate growth, the two-year subscription that transformed his CAC payback, and why removing signup friction backfired.Top Takeaways:💰 Raising money means …

  9. Make Ugly Ads to Grow Your App – Yuliya Lennox (Solid Starts)

    1 h 17 minEpisode 174

    On the podcast: why founders belong in the marketing trenches more often, what makes ‘ugly’ ads perform so well, and why stable ad performance is actually a red flag.Top Takeaways:🚨 Stable ad performance is a …

  10. The Bootstrapper's Path to $10M ARR – Andrew Maguire, Volo Ventures

    1 h 5 minEpisode 173

    On the podcast: the bootstrapper's path to $10 million in ARR, what's actually investable in consumer in 2026, and why product taste is the new bottleneck, not engineering.Top Takeaways:🎨 Product taste is the …

  11. How Simply Finally Cracked Facebook Ads with Web Funnels – Yoav Sharon, Simply

    1 h 7 minEpisode 172

    On the podcast: reaching brand-new audiences through web funnels, how they created their own ‘Big Mac index’ for global pricing, and why monthly plans can beat annual for LTV.Top Takeaways:🌐 Web funnels unlock …

  12. WWDC 2026: What Subscription Apps Need To Know

    1 h 50 minEpisode 171

    Every year, Apple’s Worldwide Developers Conference introduces updates that ripple through the App Store economy for years to come. In this special post-WWDC edition of Sub Club Live, host David Barnard sits …

  13. How Removing the Free Trial Grew Monthly Subs 2000% – Nancy Anderson, Natal

    1 h 5 minEpisode 169

    On the podcast: why authentic founder-led content outperforms, tapping into HSA payments to unlock a whole new audience, and the growth lever no dashboard can measure.Top Takeaways:🗣️ Authentic founder-led …

  14. Freemium at Scale: Why Life360 Protects its Free Users – Giordano Contestabile

    55 minEpisode 168

    On the podcast: about making growth everyone’s job, protecting the free experience even when it hurts conversion, and why an inconclusive experiment is the only kind he hates.Top Takeaways:🎯 An inconclusive …

  15. Why Opal Stopped Chasing Revenue – Kenneth Schlenker, Opal

    55 minEpisode 167

    On the podcast: why retention is the only real moat, how dropping paid conversion from 20% to 9% increased revenue, and why he sees the rise in competition as a net positive for Opal.Top Takeaways:🔄 Retention …

  16. 12 AI Growth Lessons for Subscription Apps – Phil Carter, Elemental Growth

    1 h 7 minEpisode 166

    On the podcast: how AI can turn your onboarding from a chore into magic, hyper-personalized experiences that drive both retention and revenue, and why your value-to-noise ratio matters more than how many …

  17. How the World's #1 VPN App Reached 1 Billion Downloads – Tanuj Chatterjee, Super Unlimited

    50 minEpisode 165

    On the podcast: the product-driven growth loop behind the #1 VPN app in the world, why they intentionally leave money on the table, and how the prettiest design often loses in their A/B tests.Top Takeaways:📐 …

  18. Bootstrapped to $6.7M ARR and an Exit to Quizlet in 2 Years – Brett Bauman & Zack Hargett, Coconote

    1 h 6 minEpisode 164

    On the podcast: hitting $1M ARR in four months with no paid ads, why trial extensions beat discounts for saving cancellations, and why you should be hiring content creators, not influencers.Top Takeaways:📈 …

  19. How ElevenLabs Turns Feature Launches Into a Growth Engine – Luke Harries

    17 minEpisode 163

    On the podcast: how ElevenLabs turns every new feature launch into a growth engine, how they're deploying over a hundred million dollars in paid ads, and why directing AI agents is quickly becoming a core skill …

  20. Why App Economy Disruption Won’t Happen As Fast As Everyone Thinks – Eric Seufert

    20 minEpisode 162

    On the podcast: why app economy disruption won't happen as fast as everyone seems to think, how AI is just as useful for defending against copycats as creating them, and why the real barrier to app success is …

  21. The Art of Driving Retention Through Product – Ben Gammon, Ladder

    22 minEpisode 161

    On the podcast: product-driven retention as the foundation for lifecycle marketing, working backwards from results to nail activation, and why talking to individual users can lead you astray.This conversation …

  22. The 2026 State of Subscription Apps Report

    1 h 6 minEpisode 160

    On the podcast: what the explosion in new apps means for the market, how the top 10% of apps grew 306% while the median barely beat inflation, and why hard paywalls convert 5X better than freemium.This …

  23. How To Repurpose Offline Events Into Millions Of Online Impressions – Larissa Morimoto, PhotoRoom

    18 minEpisode 159

    On the podcast: breaking free from the paid acquisition treadmill, how to repurpose offline events into millions of online impressions, and why a celebrity partnership can go viral but still completely …

  24. Why Web Onboarding Should Sell The Problem, Instead Of The Solution – Leon Sasson, Rise Science

    21 minEpisode 158

    On the podcast: why web onboarding should sell the problem instead of the solution, how discounted paid trials are beating free trials, and why creative that flopped for app ads might crush it for web …

  25. Dynamic Paywalls That Drove Millions in New Revenue – Shawn Gong, Tinder

    23 minEpisode 157

    On the podcast: how Tinder's ML-powered paywalls drove millions in new revenue, the art of selling features à la carte without killing subscription revenue, and why Tinder Select flopped despite users saying …

  26. The Hidden Cost of Underpricing Your Subscription – Patrick Rills, Lose It!

    18 minEpisode 156

    On the podcast: testing prices from $5 all the way to $120 per year, why rising CACs forced a pricing rethink, and how raising the price allows them to discount more aggressively.This conversation is shorter …

    Show notes

    On the podcast: testing prices from $5 all the way to $120 per year, why rising CACs forced a pricing rethink, and how raising the price allows them to discount more aggressively.


    This conversation is shorter than usual and will be featured in RevenueCat’s State of Subscription Apps report. Each episode in this series will explore one crucial topic and share actionable insights from top subscription app operators.


    Top Takeaways:

    💰 Retest prices you've already ruled out
    Market conditions shift constantly. A price point that couldn't beat the control for years can suddenly break even as competitors raise prices and consumer expectations change.

    📈A higher base price unlocks more aggressive discounting Going from $40 to $80 creates room for steeper percentage discounts that drive higher conversion, even when the absolute dollar price is still higher.

    🔒Rising CACs demand pricing that funds acquisition At $40/year, paid UA math barely worked. Doubling the price gave the marketing team room to compete on acquisition channels where costs keep climbing.



    About Patrick Rills:

    🚀 Chief Product & Technology Officer at Lose It!, the app-based weight loss program mobilizing the world to achieve a healthy weight.

    👋 LinkedIn


    Follow us on X:


    Episode Highlights:
    [0:00] Introduction to Patrick Rills, Chief Product & Technology Officer at Lose It!
    [1:05] How pricing changes unlocked new growth opportunities at Lose It!
    [2:12] Balancing customer acquisition costs (CAC) with retention through pricing strategy
    [3:25] Key insights from years of price testing, ranging from $5 to $120 per year
    [4:42] Raising prices to enable deeper discounting and improve conversions
    [5:58] Aligning product value with pricing to retain loyal users
    [7:06] The role of the freemium model in keeping users engaged after price increases
    [8:02] Using smart pricing and AI to drive growth
    [9:14] Leveraging data to fine-tune pricing decisions
    [10:27] How customer feedback and product data shape pricing strategies
    [11:38] Challenges and benefits of raising prices for an established product
    [12:33] Future plans for pricing tiers and new monetization strategies
    [13:18] Patrick shares iOS developer hiring opportunities at Lose It!
    [13:41] Final thoughts on driving sustainable growth and user value

  27. How Clarity and Personalization Help Drive Duolingo’s Growth – Anmol Tiwari, Duolingo

    21 minEpisode 155

    On the podcast: how Duolingo prioritizes clarity over persuasion on their paywalls, why they offer users multiple free trials instead of just one, and how adding friction to their trial reminder flow actually …

  28. How Mojo Increased ARPU 60% In Just Five Months – Michal Parizek, Mojo

    21 minEpisode 154

    On the podcast: the experiments behind Mojo's 60% lift in ARPU, why a winning paywall in Japan completely failed in the US, and why not relying on day one for most of your revenue is actually a strength.This …

  29. Stop Celebrating Conversion Wins Before Checking Renewals – Sara Grana, Yousician

    19 minEpisode 153

    On the podcast: about the cost of not tracking your experiments and decisions, how refunds and chargebacks quietly erase your paywall wins, and why stacking A/B test wins should compound your growth, but almost …

  30. The Boom In Non-Game App Revenue And What's Driving It – Olivia Moore, Andreessen Horowitz

    18 minEpisode 152

    On the podcast: the tailwinds driving a boom in non-game app revenue, how vibe coding and AI workflows are fueling growth in categories that have nothing to do with AI, and why people predicting the "death of …

These are the latest 40 of 178 episodes. You’ll find older episodes in the podcast’s feed.

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