# Summation vs GridMind Pro

The clearest difference is in-app purchases: GridMind Pro at none against Summation's 2. Summation's advantage is ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Summation sells 2 one-off in-app purchases. GridMind Pro asks for nothing beyond the download.

Summation ships an update every 3 weeks, GridMind Pro fortnightly. The most recent releases landed on September 28, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Summation | GridMind Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (58 ratings)](https://appshunter.io/ios/app/summation/id1219879009/reviews)** | — |
| Number of ratings | **58** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 110 MB | 48 MB |
| Requires iOS | **9.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lemon Jam Technology Co., Ltd.](https://appshunter.io/developer/884737211) | [Ahmet Bohur](https://appshunter.io/developer/1884060211) |

## What reviewers say

### Summation

[App page](https://appshunter.io/ios/app/summation/id1219879009)

Engage your brain with a minimalistic math puzzle game. Rearrange numbers to solve increasingly challenging levels. Explore new themes and enjoy endless gameplay.

**Highlights:** Minimalistic math puzzle gameplay, Rearrange numbers to solve puzzles, Endless levels for infinite play, Unlockable game themes, Brain workout challenges

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Hints | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 🧠 Engaging puzzle mechanics with unique crossword-style addition gameplay
- 😌 Relaxing and calming experience without timers or move counters
- 🎨 Beautiful minimalist design with clean aesthetic
- 🎵 Pleasant soundtrack and sound design
- 📈 Good difficulty progression that challenges without frustrating

**What reviewers complain about**

- 📺 Excessive and intrusive full-screen video advertisements
- 💰 Ads persist even after paying for ad-free version
- 🔄 Ads interrupt gameplay and timer continues during Challenge Mode
- 🛑 Frequent app crashes and freezes, often related to ads
- 🔗 App Store opens unexpectedly multiple times during gameplay

**Reported bugs**

- Hint button freezes game and requires reinstall to fix
- Game crashes at specific levels (e.g., level 102)
- App crashes immediately upon opening with blue dot indicator
- Full-screen ads cannot be closed and trap users
- Game gets stuck in landscape mode after full-page ad

**Requested features**

- Dark mode for nighttime playing
- Multiplication puzzle variant
- Increased difficulty progression beyond level 100
- More varied puzzle structures and mechanics
- Ability to purchase larger quantities of hints at once


### GridMind Pro

[App page](https://appshunter.io/ios/app/gridmind-pro-math-puzzle/id6761519077)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Summation free?

Summation is free to download, with in-app purchases available.

### Is GridMind Pro free?

GridMind Pro is free to download, with no in-app purchases.

### Do Summation or GridMind Pro have ads?

GridMind Pro shows ads; Summation does not.

### Which is updated more often, Summation or GridMind Pro?

Summation ships an update every 3 weeks, and GridMind Pro fortnightly. Most recently, Summation was updated on September 28, 2026 and GridMind Pro on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*