One-f
Think Binary. Act Fast.
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
・Add marketing URL
The developer, Rikiya Ota, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Rikiya Ota
- Size
- 5.2 MB
- Category
- Puzzle
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- スタミナ無制限 USD 3.99
- Copyright
- ©2025 Rikiya Ota