Turkey-based one-person company SkinStuff lets users photograph a skincare label or product, then uses AI to organize ingredient safety, relevant research and compatibility with the user's skin type before purchase. TrustMRR lists $2,184 in RevenueCat-verified lifetime revenue, $506 MRR and 60 active subscriptions. After a seven-day trial, weekly plans cost $7.99, $5.29 or $3.49, while acquisition comes from App Store optimization, Meta ads and TikTok ads. The product embeds AI in a real buying decision instead of offering a generic chat, but high weekly pricing, ad cost, recommendation accuracy and long-term retention still determine durable profit.