Opal — iOS-first screen time blocker with Focus Score. Premium design. 4M+ users. Mentions ADHD use case

The best-looking blocker on the market, and that matters for aesthetically sensitive brains. On iPhone, the Screen Time + Deep Focus + Focus Score integration forms an effective cocoon.

The site explicitly mentions ‘helps manage ADHD’ — one of the few to claim it.

Price caveat: ~$80/year for a blocker is steep when One Sec gives you a lot at half the price. Justifiable if the design genuinely motivates you (vs Cold Turkey, uglier but cheaper).