# Gridsum — Logic puzzles. Pure math.

> Logic-based number puzzle game with tile swapping and target sums. (iPhone/iPad app by Tyler Lewis.)

- Source: https://appshunter.io/ios/app/gridsum/id6770373881 (this page in markdown: same URL + `.md`)
- Developer: [Tyler Lewis](https://appshunter.io/developer/1896737710)
- Category: Games, Puzzle
- Price: Free with in-app purchases
- Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 64 MB
- Languages: American English
- Released: 2026-06-26
- Data updated: 2026-10-09
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/gridsum/id6770373881/reviews.md

## What is Gridsum?

Every region has a target sum. Swap tiles until every region matches 
at once. That is Gridsum — a number puzzle built on pure logic.

No timer. No lives. No luck. The board is fully knowable and every 
solution is reachable through arithmetic and planning alone.

HOW IT WORKS

The grid is divided into colored regions. Each region contains 
numbered tiles and a target sum. Swap any two tiles and watch the 
totals shift in real time. Find the arrangement where every region 
simultaneously hits its target — puzzle solved.

Gridsum starts with a simple 2×2 grid and two regions. As difficulty 
climbs, the challenge deepens: 3×3 and 4×4 grids, irregular region 
shapes, and tiles that belong to two regions at once — where a single 
swap changes two totals simultaneously.

Every puzzle is solvable through logic. No guessing required.

HUNDREDS OF HANDCRAFTED LEVELS

Work through the difficulty tiers: Tutorial, Beginner, Apprentice, 
Intermediate, Advanced, Expert, Veteran, and Pro, Master, and Grandmaster. Each level is rated by move count. Solve within the target — no hints, no resets — to 
earn a PERFECT badge alongside your stars.

Every level tracks your personal best time and move count. See exactly 
how much you've improved.

DAILY CHALLENGE

A new arithmetic puzzle drops every day, seeded by the date. Your 
streak counts any day you play at least one level — the daily 
challenge or any regular level. Your current streak and best streak 
are always visible on the home screen.

GLOBAL LEADERBOARD

Compete with players worldwide across four ranked categories: total 
stars earned, solving speed, perfect solves, and highest level 
reached. Set a display name and see exactly where you stand.

BUILT FOR FOCUS

Dark background. Glowing neon region borders. Clean geometric 
typography. Gridsum is designed for players who want a clean, 
distraction-free logic puzzle — no characters, no story, no 
countdown pressure. Just numbers and logic.

Accessibility options: colorblind mode with pattern fills on region 
borders, reduce motion, and large text.

Free to play with ads. A one-time purchase permanently removes all 
ads — no subscription, no recurring charge.

If you enjoy sudoku, KenKen, Wordle, or number puzzles generally, 
Gridsum gives you something more spatial and strategic to work 
through.

Download for free and start your first streak today.

## Key features

- Logic-based tile swapping
- Target sum matching
- Hundreds of handcrafted levels
- Daily challenges
- Global leaderboards
- Distraction-free design
- Accessibility options

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $3.99 | one-time |


## Is Gridsum safe?

Not enough ratings yet to assess Gridsum.

## Is Gridsum legit?

Gridsum has limited verification signals. The AppsHunter Legitimacy Score for Gridsum is 48 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/gridsum/id6770373881/reviews.md

### 5/5 — Great mind stimulation

*2026-08-06*

I enjoy playing this game and it is truly something that just makes my brain feel wired every time I play. Amazing concept and challenge 🙂‍↔️

### 5/5 — BEST GAME FOR NYC SUBWAY

*2026-08-02*

FINALLY a 5-star game I can play without internet! THANK YOU

## Frequently asked questions about Gridsum

### What is Gridsum?

Gridsum is a logic puzzle game where you swap tiles on a grid to make each colored region simultaneously match its target sum. It's designed for pure logic and strategic planning, with no timers or luck involved.

### How does Gridsum gameplay work?

The grid is divided into colored regions, each with numbered tiles and a target sum. You swap any two tiles, and the totals update in real-time. The goal is to find the arrangement where every region hits its target sum at once.

### Does Gridsum have ads?

Yes, Gridsum contains advertisements. However, you can permanently remove all ads with a one-time purchase, with no subscription or recurring charges.

### What difficulty levels are available in Gridsum?

Gridsum offers a wide range of difficulty tiers, starting from Tutorial and Beginner, progressing through Apprentice, Intermediate, Advanced, Expert, Veteran, Pro, Master, and Grandmaster levels.

### Can I play Gridsum offline?

The provided information does not specify if Gridsum can be played offline. However, features like the Daily Challenge and Global Leaderboard suggest an online component may be required for full functionality.

### How often is Gridsum updated?

The latest version of Gridsum is 1.1.1, last updated on August 4, 2026. While specific update frequency isn't detailed, this indicates regular maintenance and improvements.

### What devices does Gridsum support?

Gridsum is available for iPhone and iPod devices. It is designed for iOS users looking for a logic-based puzzle experience.

### Is Gridsum suitable for children?

Gridsum has an age rating of 4+, making it suitable for younger players. The game focuses on logic and arithmetic, with no inappropriate content mentioned.

## Version history (last 3 releases)

### 1.1.1 — 2026-08-04

UI updates, colorblind mode fix, Gamecenter syncing.

### 1.1 — 2026-07-02

Updated app information and metadata.

### 1.0 — 2026-06-27

No release notes.

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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 2026-10-09.*