# QT vs ZQDataLog

The clearest difference is iOS requirement: QT at 10 against ZQDataLog's 15.6. 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.

QT ships an update every 2 months, ZQDataLog every 5 weeks. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | QT | ZQDataLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 33 MB | 1 MB |
| Requires iOS | **10** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [BSN (HK) Limited](https://appshunter.io/developer/1478716662) | [榆 秦](https://appshunter.io/developer/1499965452) |

## What reviewers say

### QT

[App page](https://appshunter.io/ios/app/qt/id1454476488)

**Features:** macOS Compatibility

**In-app purchases:** none


### ZQDataLog

[App page](https://appshunter.io/ios/app/zqdatalog/id1535448218)

**In-app purchases:** none


## Frequently asked questions

### Is QT free?

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

### Is ZQDataLog free?

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

### Do QT or ZQDataLog have ads?

Neither QT nor ZQDataLog shows ads.

### Which is updated more often, QT or ZQDataLog?

QT ships an update every 2 months, and ZQDataLog every 5 weeks. Most recently, QT was updated on October 29, 2026 and ZQDataLog on October 25, 2026.

---

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