228+ iOS apps curated and reviewed
The best csiu apps on iPhone average 4.5★ across 228+ titles — we've ranked them by what real users actually keep on their phones. Updated May 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 1.0★ (1) | No | No | May 2026 | |
| 2 |  | Free | 4.6★ (41K) | No | Yes | Sep 2026 | |
| 3 |  | Free | 4.7★ (32K) | Yes | Yes | Sep 2026 | |
| 4 |  | Free | 4.8★ (100K) | No | Yes | Sep 2026 | |
| 5 |  | Free | 4.7★ (65K) | No | Yes | Sep 2026 | |
| 6 |  | Free | 4.7★ (265K) | No | Yes | Sep 2026 | |
| 7 |  | Free | 4.7★ (34K) | No | No | Sep 2026 | |
| 8 |  | Free | 4.8★ (407K) | Yes | Yes | Aug 2026 |
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This app offers hundreds of interactive coding games and activities for children aged 3-10. Kids can solve puzzles, design their own games and stories, and even participate in coding contests. It focuses on building essential coding concepts and problem-solving skills in a safe, ad-free environment.
Master math and computer science through interactive, visual lessons. This app focuses on active problem-solving and personalized practice to build critical thinking and STEM skills. Ideal for students and lifelong learners seeking to deepen their understanding and confidence.
