24++
Make 24. Beautifully.
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
A 24-point puzzle for people who think +, −, ×, and ÷ are only the beginning. Explore exact roots, factorials, and degree-based trig.
24++ turns the classic make-24 puzzle into a clean mathematical playground. Combine four number tiles, reshape values with exact transformations, and discover a path to 24 that feels as elegant as it is correct.
START CLASSIC, THEN GO GEEK
• Classic Lab: +, −, ×, and ÷
• Transform Lab: add square roots and factorials
• Trig Lab: use exact sine and cosine values in degrees
BUILT FOR EXPLORATION
• Tap tiles or sweep across several tiles to select them
• Combine up to four selected values from left to right (Multi-Select is on by default)
• See every expression grow without typing formulas
• Use exact arithmetic—24 is never accepted through rounding
• Reveal progressive hints or a verified worked answer
• Pick a random unsolved puzzle and continue where you left off
• Filter large puzzle banks by solved and unsolved status
• Find bookmarked and skipped puzzles together in Library
• Skip a puzzle for now and return to it whenever you like
MADE FOR IPHONE AND IPAD
• Automatic, Day, and Night appearances
• English, Simplified Chinese, and Japanese in the app
• Sync progress, bookmarks, and skipped puzzles between your devices using the same Apple Account in iCloud
• Keep playing offline; settings and in-progress calculations stay on each device
• No separate app account, ads, or developer analytics
Try 72 curated puzzles for free: 24 in each lab, using numbers 1–13. Full Lab is a one-time purchase that unlocks every available Classic, Transform, and Trig puzzle in the verified 1–13 bank, including future bank updates. Family Sharing is supported.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
• More free puzzles: 24 per lab, 72 in total, using numbers 1–13.
• Sync completed progress, bookmarks, and skipped puzzles across your iPhone and iPad with the same iCloud account.
• A unified Library for bookmarked and skipped puzzles.
• Skip a puzzle for now and come back later.
• Improved result sheets keep the next-puzzle button within reach.
The developer, Ye Zhang, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ye Zhang
- Size
- 10.2 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 and 2 more
- English, Japanese, Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Full Lab $3.99
- Copyright
- © 2026 Ye Zhang
