Arthur, a 20-year-old CS student, built a profitable affirmation app called "Glow" in ~60 days with just a $200 ad budget - proving you don't need funding or virality to monetize.
tldr
- •scanned App Store for simple, proven concepts - chose affirmation apps targeting Nordic winter depression
- •MVP: swipe quotes like TikTok, categories, favorites, streaks, widgets. no login, local storage
- •$2,800 revenue in 28 days (~$2k profit after Apple cut + ads)
- •key insight: onboarding optimization > app features for conversions
- •free ad credits ($500 TikTok, $100 Apple) halved customer acquisition costs
the idea
- •after failed AI startup, wanted to prove anyone can build and monetize
- •scanned App Store for simple, proven concepts with room for differentiation
- •chose affirmation apps - twist: "Glow" targets Nordic winter depression
- •cozy UI, warm colors, candle mascot
tech stack
- •design: Figma, Dribbble for inspo, ChatGPT for mascot/ideas
- •dev: Expo/React Native (iOS only initially), Swift for widgets
- •payments: RevenueCat ($10/month, $40/year with 3-day trial)
- •analytics: Supabase for feedback, PostHog for A/B testing
- •other: Jitter for animations, Next.js landing page, Astro for ASO
build process (weeks 1-2)
- •designed in Figma, coded screens/onboarding
- •added payments, dark mode, themes, voice affirmations (Gemini TTS)
- •Apple rejection first try (privacy mismatch) - fixed and approved
- •used Transporter app for faster uploads
marketing (weeks 3-8)
- •initial: free lifetime access for feedback/reviews
- •YouTube shorts: 20k views but low conversions
- •Reddit posts: 3k views, some bans
- •organic TikTok: POVs, demos, transformations - mostly flopped (2k views max)
- •paid TikTok ads: $200 budget + $500 free credits via promos
- •best performing: iOS wallpaper with music = $0.10/download
- •hired creator for $60 videos
- •ASO: targeted Nordic keywords (e.g., "health" in Norwegian)
the numbers
- •~60 days: 900+ initial downloads → scaled to 200+/day via ads
- •revenue: $2,800 in 28 days ($2k+ profit)
- •subs: 66 active, 46 trials; MRR $143
- •funnel: download→trial 14-20%; trial→paid 31%
- •organic reviews hit 4.7/5
key optimizations
- •A/B tested onboarding: progress bar + commitment screen boosted completion 74%→83%
- •step-by-step paywall improved trial starts
- •grace period billing rescued 10% revenue
- •low retention (15% day 2): added tutorials, "For You" recommendations
- •spent 90% of optimization time on onboarding tweaks
lessons
- •validate fast, iterate on data/user feedback (not assumptions)
- •onboarding > app features for conversions
- •failing teaches most - enjoy the process
- •scale by reinvesting profits
- •free ad credits are huge - hunt for promos