Comparison

BLU by Gentec vs TUNZE

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BLU by Gentec

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
Read full description

This new line of All-in-One detectors combine a detector and a meter with Bluetooth connectivity in one convenient product. The small but powerful meter of the BLU Series presents a Bluetooth connection so you can display the results on your mobile device with the Gentec-EO BLU app available for iOS systems. ALL-IN-ONE DETECTOR + METER This new line of All-in-One detectors combine a detector and a meter with Bluetooth connectivity in one convenient product SAFER WORK ENVIRONMENT Operators can be far from the detector while making measurements (up to 30m, depending on the environment and barriers). And with less cables in the workspace, accidents are less likely to happen! CROSS-PLATFORM SOFTWARE Display the results on your mobile device with the Gentec-EO BLU app available for iOS systems. INCREDIBLE PERFORMANCE BLU detectors offer the same performance as the usual detector + monitor combination, from mW to kW LONG BATTERY LIFE The USB-rechargeable Li-ion battery lasts up to 5 continuous days with the device running COMPACT SIZE Perfect for the lab, OEM applications and field servicing. No need to carry a meter! LOWER RECALIBRATION COSTS One Product = One Calibration. Reduce your recalibration costs by half! AVAILABLE WITH: Power Detectors

About

TUNZE

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
Read full description

With the TUNZE App, you can control your TUNZE devices centrally, clearly and at any time – whether it’s pumps, controllers or intelligent accessory features. At the same time, the app includes all proven analysis and maintenance features of the former Reef Assistant – now completely free! This makes TUNZE the complete companion for a stable, healthy and easily maintained marine aquarium. Our philosophy: Record values, correct them, stabilize them. Optimal water chemistry and reliable technology are the foundation of a successful reef aquarium. Legal Information Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Use: https://app.tunze.com/tunze/en/terms-of-use Privacy Policy: https://app.tunze.com/tunze/en/data-terms Imprint: https://app.tunze.com/tunze/en/imprint More information: https://app.tunze.com

Screenshots

BLU by Gentec4 screens
TUNZE4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
BLU by Gentec versus TUNZE: the parameters behind the verdict, then further details
ParameterBLU by GentecTUNZE
PriceFreeFree
Rating1.0 (2 ratings) — better—
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings2 — better—
Update frequencyMonthly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better15.1
Further details — not scored
Size49 MB67 MB
Age rating4+4+
DeveloperGentec-EO inc.fynix GmbH

Customer experience

BLU by Gentec

All ratings2 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

TUNZE

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

BLU by Gentec

No in-app purchases

None

TUNZE

No in-app purchases

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.

Other comparisons