# Stop! Random letter generator vs Prime Speed Controller

The clearest difference is in-app purchases: Prime Speed Controller at none against Stop! Random letter generator's 1. Prime Speed Controller also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Stop! Random letter generator sells 1 one-off in-app purchase. Prime Speed Controller asks for nothing beyond the download.

## The numbers

| Metric | Stop! Random letter generator | Prime Speed Controller |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (46 ratings)](https://appshunter.io/ios/app/stop-random-letter-generator/id1530248644/reviews)** | — |
| Number of ratings | **46** | — |
| Positive reviews | 63.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 144 MB | 1 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Denardi](https://appshunter.io/developer/1530249006) | [Kohei Ishikawa](https://appshunter.io/developer/6789856622) |

## What reviewers say

### Stop! Random letter generator

[App page](https://appshunter.io/ios/app/stop-random-letter-generator/id1530248644)

This app randomly selects letters for popular word games like Stop and Categories. It offers features like audible letter pronunciation, tracking used letters, and setting round timers to enhance gameplay. Shake your device to draw the next letter, making your games more dynamic.

**Highlights:** Random letter selection, Audible letter pronunciation, Track used letters, Set round time limits, Shake to draw letter

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $2.99 | one-time |


### Prime Speed Controller

[App page](https://appshunter.io/ios/app/prime-speed-controller/id6805684433)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stop! Random letter generator free?

Stop! Random letter generator is free to download, with in-app purchases available.

### Is Prime Speed Controller free?

Prime Speed Controller is free to download, with no in-app purchases.

### Do Stop! Random letter generator or Prime Speed Controller have ads?

Stop! Random letter generator shows ads; Prime Speed Controller does not.

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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.*