"Your data has always been used for ads, for big data, for selling to other companies. And the user benefits the least. It doesn't have to be like that." I talk to Ahmet and Ömer Delibaş, two brothers building Klara, a "digital brain" for Android that captures everything you do on your phone, organizes it, and gives it back to you as searchable memory, habits, and a daily digest. One brother is a software engineer who spent years watching user data flow to ad networks and data centers. The other is a dentist who builds on the side. Together they spent four years turning an idea into a product. We get into the privacy model that most AI apps won't touch (fully local if you want, anonymized and deleted after five days if you turn AI on), how a chaotic accessibility feed becomes a clean memory database, the ADHD users who showed up unplanned, and the Reddit playbook that got them 1,000 pre-registrations before launch and 1,000 downloads in week one. In this episode: - Your Digital Brain: What Klara captures, what it throws away, and why your biological brain is the model. - Users Benefit the Least: The founding thesis, and why the AI wave made it buildable. - Five-Day Deletion: Local-only mode, anonymized AI calls, and leaving nothing behind when a user quits. - The ADHD Surprise: Users the founders never planned for, and "fall in love with the users, not the product." - 2K MAU, 10% MoM, Zero Ads: Why they refuse to buy growth before the product deserves it. - The Reddit Playbook: 1,000 pre-registrations in one month, 1,000 downloads in week one, and posting about more than Klara. - Great Product, Terrible Business: My Wunderjob lesson on churn, and why subscriptions beat ads for privacy products. - Focus on Hard Things: Why everyone builds AI agents, why memory is harder, and why distribution still beats product. 🎧 Full episode on all podcast platforms 💬 Would you let an app record everything on your phone if it deleted it after five days? Let us know in the comments! 🔔 Please like and subscribe! Every subscriber helps our channel grow. #DN #DigitalBrain #Klara #PrivacyFirst #AIMemory #AndroidApp #BuildInPublic #Reddit #IndieHackers #Startups Timestamps: 0:00 Intro 0:10 What Clara is: your digital brain 1:06 The engineer's path: years of watching user data go the wrong way 3:30 The dentist who builds: why two brothers started a company 4:41 Android first, other platforms later 5:17 The privacy model: local-only, anonymized, deleted in five days 9:28 How memory works: turning accessibility chaos into a database 13:14 Text only for now, and where AI devices are heading 13:51 The ADHD users nobody planned for 15:55 Building in public: X, Reddit, Telegram, in-app surveys 17:12 Wunderjob: a great product that was a terrible business 18:54 2K monthly active users, 10% growth, no ads yet 20:25 Subscription vs ads, and why big companies didn't start with ads 22:41 The Reddit playbook: 1,000 pre-registrations before launch 26:04 Advice for two-person teams: ship, distribute, focus on hard things