# SA vs Quantum Service Tool

The clearest difference is update cadence: Quantum Service Tool at fortnightly against SA's every 3 months. Quantum Service Tool also leads on iOS requirement (11.0 vs 17.0). On price, ads, 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.

SA ships an update every 3 months, Quantum Service Tool fortnightly. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SA | Quantum Service Tool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 62 MB | 20 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [YANMAR INFORMATION SYSTEM SERVICE CO. LTD](https://appshunter.io/developer/1821588355) | [SVAB Hydraulik AB](https://appshunter.io/developer/1317241516) |

## What reviewers say

### SA

[App page](https://appshunter.io/ios/app/sa-direct/id1211496665)

**In-app purchases:** none


### Quantum Service Tool

[App page](https://appshunter.io/ios/app/quantum-service-tool/id1455339649)

**In-app purchases:** none


## Frequently asked questions

### Is SA free?

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

### Is Quantum Service Tool free?

Quantum Service Tool is free to download, with no in-app purchases.

### Do SA or Quantum Service Tool have ads?

Neither SA nor Quantum Service Tool shows ads.

### Which is updated more often, SA or Quantum Service Tool?

SA ships an update every 3 months, and Quantum Service Tool fortnightly. Most recently, SA was updated on October 5, 2026 and Quantum Service Tool on October 14, 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.*