# S vs Slav Button

The clearest difference is review sentiment: Slav Button at 90% against S's 0%. Slav Button also leads on ads (none vs shown) and rating (4.9 vs 4.4). On price, 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.

Slav Button holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: Slav Button has 99 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 0% of S's written reviews are positive against 90% of Slav Button's.

S ships an update every 3 months, Slav Button monthly. Both last shipped on November 2, 2026.

## The numbers

| Metric | S | Slav Button |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (12 ratings)](https://appshunter.io/ios/app/s-reflex-test-4-reaction-time/id1248289644/reviews) | **[4.9 (99 ratings)](https://appshunter.io/ios/app/slav-button/id1422057687/reviews)** |
| Number of ratings | 12 | **99** |
| Positive reviews | 0.0% of reviews | **90.3% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Ad-supported | **Free** |
| Size | 12 MB | 146 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Masaharu Tsukamoto](https://appshunter.io/developer/939316877) | [Karlo Bencic](https://appshunter.io/developer/1049015150) |

## What reviewers say

### S

[App page](https://appshunter.io/ios/app/s-reflex-test-4-reaction-time/id1248289644)

Enhance your reflexes and reaction time with this simple target-shooting game. Practice anywhere to improve your performance in games and sports. Compete with others by logging into Game Center and joining the rankings.

**Highlights:** Target shooting gameplay, Reflex and reaction time training, Practice anywhere, Game Center login, Global rankings

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

**In-app purchases:** none


### Slav Button

[App page](https://appshunter.io/ios/app/slav-button/id1422057687)

Trigger a collection of hard bass songs to entertain friends. Perfect for gatherings and enjoying music while squatting.

**Highlights:** Hard bass song collection, Entertain friends, Squatting music, Gopnik theme, Over 60 songs

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

**In-app purchases:** none


## Frequently asked questions

### Is S free?

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

### Is Slav Button free?

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

### Which has better reviews, S or Slav Button?

Slav Button is rated higher. S averages 4.4 out of 5 from 12 ratings, while Slav Button averages 4.9 from 99 ratings.

### Do S or Slav Button have ads?

S shows ads; Slav Button does not.

### Which is updated more often, S or Slav Button?

S ships an update every 3 months, and Slav Button monthly. Most recently, S was updated on November 2, 2026 and Slav Button on November 2, 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.*