Enhance your cognitive abilities with a fun mental calculation trainer. Solve addition, subtraction, and multiplication problems to earn points and track your progress over time. Compete globally through Game Center rankings.





173+ iOS apps & games curated and reviewed
Every iPhone needs a few good koki yoshida apps and games. We benchmark 173+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | 4.5★ (4) | No | No | May 2026 | ||
| 2 | Free | 3.9★ (20) | No | Yes | Nov 2026 | ||
| 3 | Free | — | No | Yes | Oct 2026 | ||
| 4 | Free | — | No | Yes | Oct 2026 | ||
| 5 | Free | — | — | No | Oct 2026 | ||
| 6 | Free | — | No | No | May 2026 | ||
| 7 | Free | 5.0★ (4) | No | Yes | May 2026 | ||
| 8 | Free | — | Yes | No | May 2026 |





Enhance your cognitive abilities with a fun mental calculation trainer. Solve addition, subtraction, and multiplication problems to earn points and track your progress over time. Compete globally through Game Center rankings.





Design custom jigsaw puzzles using your own photos, complete with filters and decorative frames. Share your creations with friends or enjoy a daily selection of free puzzles. Compete with others in daily rankings and organize pieces with a handy tray.






Log your sake experiences with tasting notes, ratings, and custom tags. Discover your preferences through a flavor map and radar chart. Explore sake by brand or taste, and view your drinking history with insightful statistics.