# Touch the Prime Numbers vs RRLL

The clearest difference is review sentiment: Touch the Prime Numbers at 78% against RRLL's 0%. Touch the Prime Numbers also leads on rating (4.0 vs 3.0) and ads (none vs shown). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

Touch the Prime Numbers holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 78% of Touch the Prime Numbers's written reviews are positive against 0% of RRLL's.

Touch the Prime Numbers ships an update every 4 months, RRLL every 10 months. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Touch the Prime Numbers | RRLL |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/touch-the-prime-numbers/id380110486/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/rrll/id1611876569/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **77.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 months** | Every 10 months |
| Monetization | **Free** | Ad-supported |
| Size | 6 MB | 24 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RUCKYGAMES CO., LTD.](https://appshunter.io/developer/315948909) | [YUSEI MIYOSHI](https://appshunter.io/developer/1086550692) |

## What reviewers say

### Touch the Prime Numbers

[App page](https://appshunter.io/ios/app/touch-the-prime-numbers/id380110486)

A straightforward game where players tap prime numbers as they appear. It's designed for quick play sessions and introduces users to a list of prime numbers. The game includes Game Center integration for leaderboards.

**Highlights:** Tap prime numbers, List of prime numbers provided, Quick gameplay, Game Center integration, Simple interface

**Features:** Vision Pro support

**In-app purchases:** none


### RRLL

[App page](https://appshunter.io/ios/app/rrll/id1611876569)

This game tests dynamic visual acuity by having players tap the correct half of the screen based on visual cues. Aim to beat your high score by accurately responding within a 10-second measurement period. Improve your reaction time and precision with this engaging challenge.

**Highlights:** Dynamic visual acuity measurement, 10-second testing periods, High score tracking, Left/right screen touch controls, Score-based feedback

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Touch the Prime Numbers free?

Touch the Prime Numbers is free to download, with no in-app purchases.

### Is RRLL free?

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

### Which has better reviews, Touch the Prime Numbers or RRLL?

Touch the Prime Numbers is rated higher. Touch the Prime Numbers averages 4.0 out of 5 from 1 ratings, while RRLL averages 3.0 from 1 ratings.

### Do Touch the Prime Numbers or RRLL have ads?

RRLL shows ads; Touch the Prime Numbers does not.

### Which is updated more often, Touch the Prime Numbers or RRLL?

Touch the Prime Numbers ships an update every 4 months, and RRLL every 10 months. Most recently, Touch the Prime Numbers was updated on October 11, 2026 and RRLL on October 17, 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.*