# Perfect Sum vs Stop The Triangle

The clearest difference is in-app purchases: Perfect Sum at none against Stop The Triangle's 4. Stop The Triangle's advantage is update cadence (daily vs every 3 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Stop The Triangle sells 4 one-off in-app purchases. Perfect Sum asks for nothing beyond the download.

Perfect Sum ships an update every 3 days, Stop The Triangle daily. The most recent releases landed on September 8, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Perfect Sum | Stop The Triangle |
| --- | --- | --- |
| 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 | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | **Daily** |
| Monetization | Ad-supported | — |
| Size | 139 MB | 81 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Richy](https://appshunter.io/developer/1636888789) | [ferran ases](https://appshunter.io/developer/1522208276) |

## 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


### Stop The Triangle

[App page](https://appshunter.io/ios/app/stop-the-triangle/id6479247035)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 Coins | $0.99 | one-time |
| 4k Coins | $2.99 | one-time |
| 12 Coins | $4.99 | one-time |
| 30k Coins | $9.99 | one-time |


## Frequently asked questions

### Is Perfect Sum free?

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

### Is Stop The Triangle free?

Stop The Triangle is free to download, with in-app purchases available.

### Do Perfect Sum or Stop The Triangle have ads?

Both Perfect Sum and Stop The Triangle show ads.

### Which is updated more often, Perfect Sum or Stop The Triangle?

Perfect Sum ships an update every 3 days, and Stop The Triangle daily. Most recently, Perfect Sum was updated on September 8, 2026 and Stop The Triangle on September 11, 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.*