# One-f — Think Binary. Act Fast.

> Think Binary. Act Fast. (iPhone/iPad app by Rikiya Ota.)

- Source: https://appshunter.io/ios/app/one-f/id6755620829 (this page in markdown: same URL + `.md`)
- Developer: [Rikiya Ota](https://appshunter.io/developer/1855015525)
- Category: Games, Education, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 5 MB
- Languages: American English
- Released: 2026-01-07
- Data updated: 2026-09-30
- User reviews in markdown: https://appshunter.io/ios/app/one-f/id6755620829/reviews.md

## What is One?

How to Play
  【GOAL】Reach the target within 2 seconds!
  【CONTROLS】Tap or swipe 1, 2, 4, 8 buttons
  【EXAMPLES】Target 7 → 1+2+4, Target 15 → 1+2+4+8
  【SCORING】Faster = higher score! Compete over 10 questions

Why No Rankings?

  【Humans and Bots Together】
  AI and bot play welcome. Challenge the limit of 65,535 freely.
  Rankings mixing manual and automated play can't show true skill.

  【Share on Social Media】
  "Screenshot" on result screen → Post with #One-f
  Both human and bot records are welcome.

For Automation Users

  【Share Your Setup】
  If using automation tools or bots, we encourage sharing your tech.
  Example: #One-f #Python #OpenCV

  【Why Share?】
  - Connect with similar users
  - Share and improve techniques
  - Fair competitive environment

Manual or automated, play openly and have fun.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| スタミナ無制限 | $4.99 | one-time |



## Version history (last 3 releases)

### 1.11 — 2026-01-09

・Add marketing URL

### 1.1 — 2026-01-09

• Updated support page
• Added localized languages

### 1.0 — 2026-01-07

No release notes.

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| [Mindvora Puzzle](https://appshunter.io/ios/app/mindvora-puzzle/id6758357617) | — | Free | Games |
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| [Monkey Hide: Hide & Seek](https://appshunter.io/ios/app/monkey-hide-hide-and-seek/id6761255749) | — | Free | Games |
| [Numbers Up Skill Challenge](https://appshunter.io/ios/app/numbers-up-skill-challenge/id6759439482) | — | Free | Games |
| [Sudoku Classic by Sebmist](https://appshunter.io/ios/app/sudoku-classic-by-sebmist/id6775646776) | — | Free | Games |

## More apps by Rikiya Ota

- [Catnope](https://appshunter.io/ios/app/catnope/id6757243908)

All apps by Rikiya Ota: https://appshunter.io/developer/1855015525

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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 2026-09-30.*