# STOP vs TwentySeven

The clearest difference is in-app purchases: STOP at none against TwentySeven's 2. STOP also leads on update cadence (every 10 days vs every 21 months) and iOS requirement (12.0 vs 16.0). TwentySeven's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. TwentySeven sells 2 one-off in-app purchases. STOP asks for nothing beyond the download.

STOP ships an update every 10 days, TwentySeven every 21 months. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | STOP | TwentySeven |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/twentyseven/id1457716619/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 21 months |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ERX](https://appshunter.io/developer/513941286) | [Value from Software LLC](https://appshunter.io/developer/458599979) |

## What reviewers say

### STOP

[App page](https://appshunter.io/ios/app/stop-cell-pandemic/id860160123)

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

**In-app purchases:** none


### TwentySeven

[App page](https://appshunter.io/ios/app/twentyseven/id1457716619)

A 3D puzzle game where you merge colored balloons on a grid to create larger ones. Master spatial and combinatorial thinking to achieve increasingly complex goals, from a level 8 balloon to a full house of different balloon sizes.

**Highlights:** 3D grid-based balloon merging, Enhances spatial and combinatorial thinking, Multiple grid sizes and challenges, Tutorial and undo options, Customizable controls, External keyboard support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 undo sequences | $0.99 | one-time |
| 10 undo sequences | $1.99 | one-time |


## Frequently asked questions

### Is STOP free?

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

### Is TwentySeven free?

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

### Do STOP or TwentySeven have ads?

STOP shows ads; TwentySeven does not.

### Which is updated more often, STOP or TwentySeven?

STOP ships an update every 10 days, and TwentySeven every 21 months. Most recently, STOP was updated on October 26, 2026 and TwentySeven on October 22, 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.*