This alarm clock requires users to solve a simple programming problem to turn it off. Problems are randomly selected from past AtCoder "A" tasks. Ensure you wake up on time with this unique challenge.



249+ iOS apps & games curated and reviewed
The best atcode apps and games on iPhone average 3.9★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated November 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | No | No | Nov 2026 | ||
| 2 | Free | — | No | No | Nov 2026 | ||
| 3 | Free | 4.9★ (111) | No | No | Nov 2026 | ||
| 4 | Free | 5.0★ (1) | No | No | Oct 2026 | ||
| 5 | Free | — | No | No | Nov 2026 | ||
| 6 | Free | 4.7★ (13) | No | No | Nov 2026 | ||
| 7 | Free | 3.7★ (80) | No | No | Nov 2026 | ||
| 8 | Free | 3.0★ (56) | No | No | Oct 2026 |



This alarm clock requires users to solve a simple programming problem to turn it off. Problems are randomly selected from past AtCoder "A" tasks. Ensure you wake up on time with this unique challenge.









Control AI coding agents like Claude Code and Codex directly from your phone. This self-hosted app integrates with your local development environment, allowing agents to access your setup without cloud sandboxes. Features include voice control, multi-provider support, Git worktree management, and real-time output streaming.