# GridSum — Every row and column adds up

> Every row and column adds up (iPhone/iPad app by Fabio Katz.)

- Source: https://appshunter.io/ios/app/gridsum/id6747298396 (this page in markdown: same URL + `.md`)
- Developer: [Fabio Katz](https://appshunter.io/developer/873847065)
- Category: Games, Education, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 18.5 · 1 MB
- Languages: American English
- Released: 2025-06-15
- Data updated: 2026-05-19
- User reviews in markdown: https://appshunter.io/ios/app/gridsum/id6747298396/reviews.md

## What is GridSum?

Can you turn the entire grid green?

GridSum is a clean, satisfying number puzzle where logic and intuition combine. Your goal: rearrange the numbers so every row and column adds up correctly.

How to Play
	•	Swap any two tiles
	•	Each row must sum to its last cell
	•	Each column must do the same
	•	When everything checks out, the whole grid turns green!

Why You’ll Love GridSum
	•	Quick to learn, challenging to master
	•	20 handcrafted difficulty levels
	•	Stats tracking: best time, best moves, win rate
	•	“Give Up” shows the correct solution — never stay stuck
	•	No ads, no timers, just focused gameplay

Whether you’re a puzzle fan, a math mind, or just someone who loves a daily logic boost, GridSum offers endlessly replayable fun.

Download now and see how fast you can add it all up!


## Version history (last 1 release)

### 1.0 — 2025-06-15

No release notes.

## More apps by Fabio Katz

- [Domino Guess](https://appshunter.io/ios/app/domino-guess/id1610950840)
- [Drone Travel](https://appshunter.io/ios/app/drone-travel/id1620441668)
- [Count-In Stopwatch](https://appshunter.io/ios/app/count-in-stopwatch/id6478132239)

All apps by Fabio Katz: https://appshunter.io/developer/873847065

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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 2026-05-19.*