RiddleSum - Math Puzzle
Number logic brain training
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
A fresh Daily Challenge every day. Balance the sums, keep your streak, and give your brain a calm two-minute workout.
RiddleSum is a clean and addictive number puzzle where your goal is to balance every row and column. Pick the right numbers, remove the wrong ones, and make all sums match the clues on the edges. Simple at first glance - surprisingly deep once you start playing.
Every puzzle has one single correct solution. Analyze, eliminate, and find the perfect combination that works in all directions at the same time. It’s a great way to sharpen your logic, focus, and mental math skills.
How to play:
• Check the target sums for each row and column.
• Cross out numbers that can’t be part of the solution.
• Keep only the numbers that complete the total.
• Solve boards from 3×3 up to 9×9.
Features:
• Hundreds of handcrafted number puzzles.
• Clean and minimal design that feels relaxing.
• Helpful hints when you’re stuck.
• No timers, no pressure — solve at your own pace.
• A subtle daily workout for your brain and arithmetic.
If you love smart logic puzzles and satisfying “aha!” moments, RiddleSum is perfect for your daily brain routine.
Enjoy solving beautifully simple number challenges anywhere, anytime.
• Don’t miss a Daily Challenge - turn on reminders and choose a time that works for you.
• RiddleSum is now available in Brazilian Portuguese and Latin American Spanish.
• We’ve made the game even easier and more enjoyable.
In-App Purchases
The developer, Dmitriy Romanov, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Dmitriy Romanov
- Size
- 21 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 27 more
- English, Arabic, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Indonesian, Italian, Japanese, Korean, Malay, Polish, Portuguese, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Thai, Turkish, Ukrainian, Urdu, Vietnamese
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Remove Ads $2.99
- Copyright
- © DMRO
