# 20 FLIP - Speed Reversi — 20-second speed Othello

> 20-second speed Othello (iPhone/iPad app by HIROTO TSUTSUSHIMA.)

- Source: https://appshunter.io/ios/app/20-flip-speed-reversi/id6800220954 (this page in markdown: same URL + `.md`)
- Developer: [HIROTO TSUTSUSHIMA](https://appshunter.io/developer/1784235901)
- Category: Games, Board
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 5 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-08-18
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/20-flip-speed-reversi/id6800220954/reviews.md

## What is 20 FLIP?

No time to overthink. 20 FLIP is speed reversi: 20 seconds per move.

— How to play —
Play fast rounds on a compact 6x6 board against the CPU, 20 seconds per move. Win and your streak grows as tougher CPUs step in. Lose, and you can watch a rewarded ad to retry with the same streak and the same opponent.

Beyond speed mode, the app also includes standard 8x8 reversi: play solo against the CPU, or pass-and-play with a friend on the same device.

— Who it's for —
• Quick brain breaks between tasks
• Reversi/Othello fans who want a faster pace
• Anyone chasing a longer win streak
• Friends or family playing pass-and-play

— Features —
◎ 20-second speed mode
 6x6 board, 20 seconds per move, tougher CPUs as your streak grows.

◎ Streak rescue (rewarded ad)
 After a loss, watch an ad to retry with the same streak and opponent.

◎ Classic 8x8 & 2-player
 Standard reversi rules, solo vs CPU or local pass-and-play.

◎ 20 FLIP+ (one-time purchase)
 Unlocks detailed stats (wins/losses/win rate) and board themes.

◎ Fully offline

— Privacy —
No account required. Game data is stored on-device. Rewarded ads are served via Google AdMob.

— Support —
Questions or feedback: see the support page.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 20 FLIP+ | $2.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-18

No release notes.

## More apps by HIROTO TSUTSUSHIMA

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- [インド旅行](https://appshunter.io/ios/app/id6746756989)

All apps by HIROTO TSUTSUSHIMA: https://appshunter.io/developer/1784235901

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*