# Perfect Sum vs 100 Grid Challenge

The clearest difference is update cadence: Perfect Sum at every 3 days against 100 Grid Challenge's every 3 weeks. Perfect Sum also leads on iOS requirement (12.0 vs 15.3). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Perfect Sum ships an update every 3 days, 100 Grid Challenge every 3 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Perfect Sum | 100 Grid Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/perfect-sum/id6477300117/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Ad-supported | Ad-supported |
| Size | 139 MB | 12 MB |
| Requires iOS | **12.0** | 15.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Richy](https://appshunter.io/developer/1636888789) | [matteo poggesi](https://appshunter.io/developer/1764311112) |

## What reviewers say

### Perfect Sum

[App page](https://appshunter.io/ios/app/perfect-sum/id6477300117)

A captivating puzzle game where you strategically place shapes on a numbered board to reach a perfect sum. Unlock new buildings and enjoy stunning visuals and rewarding animations as you progress through increasingly challenging levels.

**Highlights:** Strategic shape placement, Numbered board puzzles, Unlockable buildings, Increasing difficulty levels, Rewarding animations, Stunning visuals

**Features:** macOS Compatibility

**In-app purchases:** none


### 100 Grid Challenge

[App page](https://appshunter.io/ios/app/100-grid-challenge/id6670337983)

This is a strategic block puzzle game where players navigate a 10x10 grid to reach a score of 100. It combines elements of number matching and grid movement, offering a unique brain-training experience for all ages.

**Highlights:** 10x10 grid navigation, Reach a score of 100, Strategic move planning, Global leaderboards, Brain-training puzzles, Intuitive design, Endless replayability

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Perfect Sum free?

Perfect Sum is free to download, with no in-app purchases.

### Is 100 Grid Challenge free?

100 Grid Challenge is free to download, with no in-app purchases.

### Do Perfect Sum or 100 Grid Challenge have ads?

Both Perfect Sum and 100 Grid Challenge show ads.

### Which is updated more often, Perfect Sum or 100 Grid Challenge?

Perfect Sum ships an update every 3 days, and 100 Grid Challenge every 3 weeks. Most recently, Perfect Sum was updated on October 11, 2026 and 100 Grid Challenge on October 24, 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.*