AppBlock was built by a Czech developer who had a personal productivity problem: he kept opening social media apps when he was supposed to be working. He built a simple solution for himself, published it on the Play Store, and discovered that millions of other people had the exact same problem.
What makes AppBlock instructive is what it did NOT do. It did not add social features (accountability partners, shared blocklists). It did not add AI-powered focus recommendations. It did not build a web version. It did not pivot to B2B. It did not raise venture capital and hire a large team. It stayed focused on the one thing it was built to do: block apps on a schedule, reliably.
The free tier design reflects a sophisticated understanding of the problem. Basic scheduling — block social media from 9am to 5pm on weekdays — is free. The paid AppBlock Pro tier unlocks advanced profiles (different rules for work mode vs relaxation mode), strict mode (which makes it harder to override blocks for users who know they will cheat on themselves), and emergency bypass with an enforced delay. These features are not artificially withheld — they are genuinely useful only to users who have a serious distraction problem, not casual users testing the product once.