# Sa vs Starfish Class

The clearest difference is ads: Sa at none against Starfish Class's shown. Starfish Class's advantage is update cadence (every 4 months vs every 20 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Sa ships an update every 20 months, Starfish Class every 4 months. The most recent releases landed on September 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Sa | Starfish Class |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 4 months** |
| Size | 28 MB | 76 MB |
| Requires iOS | **12.0** | 12.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kernel Safety and Protection Company Limited](https://appshunter.io/developer/1453268143) | [MINDNOVATE COMPANY LIMITED](https://appshunter.io/developer/1488051251) |

## What reviewers say

### Sa

[App page](https://appshunter.io/ios/app/sa-les-plus/id1480997822)

**Features:** macOS Compatibility

**In-app purchases:** none


### Starfish Class

[App page](https://appshunter.io/ios/app/starfish-class/id1488051252)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sa free?

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

### Is Starfish Class free?

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

### Do Sa or Starfish Class have ads?

Starfish Class shows ads; Sa does not.

### Which is updated more often, Sa or Starfish Class?

Sa ships an update every 20 months, and Starfish Class every 4 months. Most recently, Sa was updated on September 10, 2026 and Starfish Class on September 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*