20+ iOS apps & games curated and reviewed
Out of 20+ koya nambo apps and games on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (19) | Yes | Yes | Oct 2026 | |
| 2 |  | Free | — | Yes | No | Oct 2026 | |
| 3 |  | Free | 5.0★ (1) | Yes | Yes | Oct 2026 | |
| 4 |  | Free | 3.0★ (2) | Yes | Yes | Oct 2026 | |
| 5 |  | Free | — | Yes | Yes | Oct 2026 | |
| 6 |  | Free | — | Yes | Yes | Oct 2026 | |
| 7 |  | Free | — | No | Yes | Oct 2026 | |
| 8 |  | Free | — | No | Yes | Oct 2026 |
Easily convert between Japanese and US units for length, weight, speed, volume, temperature, area, currency, and time zones. This tool is useful for travel, daily life, work, and study, offering a wide range of conversion categories.
Enhance your arithmetic abilities with daily exercises. This application offers various modes to sharpen your calculation speed and mental math skills. Practice with randomly generated problems to keep your brain active.
