About the Game
Sum Lattice is a quiet number puzzle about making every line balance. Place numbers from a limited pool into an intersecting grid of equations, where shared tiles connect every choice.
200 Classic Puzzles
Six chapters, from Primer to Summit, covering addition, subtraction, multiplication, division and denser grids. No countdown — take the time you need.
10 Master Trials
Five minutes to balance each board. Clear a trial to unlock the next, with puzzle variants, transposed layouts and occasional One Submit rules.
Small Moves, Satisfying Logic
Select a cell and number in any order, undo moves, zoom the board, and use one free hint per Classic puzzle.
Made for Quiet Moments
Warm paper textures, tactile tiles and gentle sounds. Adjustable sound and haptics. Progress saves on your device.
Play offline on iPhone and iPad. No account, advertising, subscriptions or in-app purchases.
Place a number. Find the balance.
Privacy Policy
This Privacy Policy explains how Sum Lattice (the “App”, “we”, “us” or “our”) handles information when you use the App on iPhone and iPad. We respect your privacy, and the App is designed to work without collecting your personal data.
1. Information We Collect
We do not collect, store or share any personal information. The App does not require an account, registration or login, and it does not ask for your name, email address, phone number, location, contacts, photos or any other personal details.
2. Data Stored on Your Device
To provide a smooth experience, the App saves the following data locally on your device only:
- Puzzle progress, completed levels and unlocked Master Trials;
- Unfinished puzzles and current tile placements;
- Preferences such as sound and haptic settings.
This data never leaves your device and is not transmitted to us or to any third party. You can remove it at any time by deleting the App.
3. No Advertising or Tracking
The App contains no advertising, no analytics tools and no tracking technologies. We do not track you across apps or websites owned by other companies, and we do not use your data for profiling.
4. No In-App Purchases or Subscriptions
The App offers no in-app purchases or subscriptions, so we do not process any payment information.
5. Network Access
The App is fully playable offline and does not require an internet connection to function.
6. Third-Party Sharing
Because we do not collect personal information, we have nothing to sell, rent, trade or otherwise share with third parties.
7. Children’s Privacy
The App is suitable for players of all ages. We do not knowingly collect any personal information from children under the age of 13, or from anyone else. If you believe a child has provided us with personal information, please contact us and we will promptly delete it.
8. Data Security
Since all game data remains on your device, its security is protected by your device’s built-in safeguards. We recommend keeping your device software up to date.
9. Your Rights
You stay in full control of your data. You may delete all locally stored game data at any time by uninstalling the App. If you contact us by email, we will use your email address only to respond to your request, and you may ask us to delete that correspondence at any time.
10. Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with a revised effective date. Continued use of the App after changes are posted means you accept the updated policy.
11. Contact Us
If you have any questions about this Privacy Policy, please email us at:
aclanerdenajshhd@icloud.com
Technical Support
Need help with Sum Lattice? Found a bug or have a suggestion? We are happy to help. Please email us and include your device model, iOS / iPadOS version and a short description of the issue.
aclanerdenajshhd@icloud.com
Frequently Asked Questions
How do I place a number?
Select an empty cell and a number from the pool, in either order. Each copy in the pool can be used once.
How do hints work?
Each Classic puzzle includes one free hint. A revealed tile stays in place and cannot be moved.
How do I unlock Master Trials?
Trial I is available from the start. Clearing each trial opens the next one. Each trial gives you five minutes to balance the board.
What is a One Submit rule?
In some Master Trial puzzles, an incorrect submission resets your placements, so check each line carefully before you submit.
Will I lose my progress?
Progress and unfinished puzzles are saved on your device. Deleting the App will remove this data, and it cannot be restored.
Can I turn off sound or vibration?
Yes. Open the in-game settings to adjust sound effects and haptic feedback.
Do I need an internet connection?
No. Sum Lattice is fully playable offline on iPhone and iPad.