# RSI STAR vs Shortshock

The clearest difference is in-app purchases: RSI STAR at none against Shortshock's 3. RSI STAR also leads on iOS requirement (12.0 vs 15.1). Shortshock's advantage is update cadence (every 4 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Shortshock sells 3 in-app purchases, starting at $5.99 per month. RSI STAR asks for nothing beyond the download.

RSI STAR ships an update every 2 months, Shortshock every 4 days. The most recent releases landed on October 19, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | RSI STAR | Shortshock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 38 MB | 51 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Akkadu (Beijing) Technology Co., Ltd.](https://appshunter.io/developer/1644872272) | [LeeNKoo](https://appshunter.io/developer/1849422939) |

## What reviewers say

### RSI STAR

[App page](https://appshunter.io/ios/app/rsi-star/id1644872270)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shortshock

[App page](https://appshunter.io/ios/app/shortshock/id6754648596)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BASIC | $5.99 | per month |
| STARTER | $12.00 | per month |
| PRO | $45.00 | per month |


## Frequently asked questions

### Is RSI STAR free?

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

### Is Shortshock free?

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

### Do RSI STAR or Shortshock have ads?

Neither RSI STAR nor Shortshock shows ads.

### Which is updated more often, RSI STAR or Shortshock?

RSI STAR ships an update every 2 months, and Shortshock every 4 days. Most recently, RSI STAR was updated on October 19, 2026 and Shortshock on October 8, 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.*