# TUNZE vs Useful QR Code Reader PRO

The clearest difference is price: TUNZE at Free against Useful QR Code Reader PRO's $2.99. Useful QR Code Reader PRO's advantage is ads (none vs shown) and update cadence (every 9 days vs every 2 months). On in-app purchases, device support and iOS requirement there is nothing between them.

TUNZE is free to download; Useful QR Code Reader PRO costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TUNZE ships an update every 2 months, Useful QR Code Reader PRO every 9 days. The most recent releases landed on July 8, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | TUNZE | Useful QR Code Reader PRO |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 67 MB | 39 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [fynix GmbH](https://appshunter.io/developer/1733023937) | [katapu.net](https://appshunter.io/developer/381898924) |

## What reviewers say

### TUNZE

[App page](https://appshunter.io/ios/app/tunze/id6499044488)

Control TUNZE devices like pumps and controllers from a central app. It offers analysis and maintenance features for marine aquariums, helping to stabilize water chemistry and technology for a healthy environment.

**Highlights:** Centralized device control, Pump and controller management, Intelligent accessory features, Water chemistry analysis, Maintenance tracking, Marine aquarium companion

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


### Useful QR Code Reader PRO

[App page](https://appshunter.io/ios/app/useful-qr-code-reader-pro/id6738622977)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TUNZE free?

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

### Is Useful QR Code Reader PRO free?

Useful QR Code Reader PRO costs $2.99, with no in-app purchases.

### Do TUNZE or Useful QR Code Reader PRO have ads?

TUNZE shows ads; Useful QR Code Reader PRO does not.

### Which is updated more often, TUNZE or Useful QR Code Reader PRO?

TUNZE ships an update every 2 months, and Useful QR Code Reader PRO every 9 days. Most recently, TUNZE was updated on July 8, 2026 and Useful QR Code Reader PRO on September 20, 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.*