# ECG QS vs QS.on

The clearest difference is iOS requirement: ECG QS at 12.0 against QS.on's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ECG QS | QS.on |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | Every 5 weeks |
| Size | 88 MB | 205 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [disserto management gmbh](https://appshunter.io/developer/1447495305) | [LEW Verteilnetz GmbH](https://appshunter.io/developer/1796356846) |

## What reviewers say

### ECG QS

[App page](https://appshunter.io/ios/app/ecg-qs-app/id1447495306)

**Features:** macOS Compatibility

**In-app purchases:** none


### QS.on

[App page](https://appshunter.io/ios/app/qson/id1588697312)

**In-app purchases:** none


## Frequently asked questions

### Is ECG QS free?

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

### Is QS.on free?

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

### Do ECG QS or QS.on have ads?

Neither ECG QS nor QS.on shows ads.

### Which is updated more often, ECG QS or QS.on?

ECG QS ships an update every 5 weeks, and QS.on every 5 weeks. Most recently, ECG QS was updated on October 26, 2026 and QS.on on October 27, 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.*