# BLU by Gentec vs TUNZE

The clearest difference is review sentiment: BLU by Gentec at 100% against TUNZE's 0%. BLU by Gentec also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, 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.

BLU by Gentec ships an update monthly, TUNZE every 2 months. The most recent releases landed on June 1, 2026 and July 8, 2026 respectively.

## The numbers

| Metric | BLU by Gentec | TUNZE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/blu-by-gentec-eo/id1234761344/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 67 MB |
| Requires iOS | **10.3** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gentec-EO inc.](https://appshunter.io/developer/1234761343) | [fynix GmbH](https://appshunter.io/developer/1733023937) |

## What reviewers say

### BLU by Gentec

[App page](https://appshunter.io/ios/app/blu-by-gentec-eo/id1234761344)

This app connects to an all-in-one detector and meter via Bluetooth, allowing users to view measurement results on their mobile device. It offers a safer work environment with remote monitoring capabilities and a compact, portable design.

**Highlights:** Bluetooth connectivity, Remote measurement display, Safer work environment, Compact and portable design, Long battery life (up to 5 days), Reduced recalibration costs

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is BLU by Gentec free?

BLU by Gentec is free to download, with no in-app purchases.

### Is TUNZE free?

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

### Do BLU by Gentec or TUNZE have ads?

TUNZE shows ads; BLU by Gentec does not.

### Which is updated more often, BLU by Gentec or TUNZE?

BLU by Gentec ships an update monthly, and TUNZE every 2 months. Most recently, BLU by Gentec was updated on June 1, 2026 and TUNZE on July 8, 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.*