System design problems specific to mobile apps — offline-first sync, battery, location, push notifications, and platform constraints on iOS and Android.
2 min read “Design a mobile app that works fully offline” is a common system design prompt. Real-world examples: notes apps, todo apps, […] Read article
2 min read Push notifications look simple from the user side — a banner appears, you tap it, the app opens. From an Read article
2 min read “Design WhatsApp” sounds like a backend question, but in a mobile system design round the interviewer wants to see you Read article
