Comparison

HTMercury vs Retgen

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

Head to head
About

HTMercury

Features
Read full description

HTMercury is a professional software available for iOS designed to perform real-time display of measured values from the HT ITALIA’s MERCURY instrument with possibility of saving snapshots for both Multimeter and integrated Thermal imager functions, performing advanced analyzes and creating reports of thermal images in order to share between mobile devices. The APP also allows to make and save recordings of each parameter measured with the internal data logger function. Summary of features and functions: β€’ Real-time visualization Multimeter function values via Bluetooth connection β€’ Saving snapshots of Multimeter and Thermal imager functions β€’ Recording of measured parameters with customized sample interval and duration time β€’ Set an modify IR picture parameters from mobile device β€’ Including objects (points, lines, areas) on images for advanced analysis β€’ Download images into mobile device via USB connection β€’ Creation of IR image snaphots reports and saving in PDF format file β€’ Sharing saved data by e-mail and social networks

About

Retgen

Features
Read full description

Retgen is a Remote Monitoring System for Power Plants. It allows you to monitor real-time production, consumption, inverter outputs, statuses, and many other data of solar power plants (GES), rooftop solar systems, wind power plants (RES), hydroelectric power plants (HES), or biomass power plants, as well as alarm states and faults occurring at the plants. With the Retgen mobile application: *Management Company users can view the following information of the plants they monitor: -Total production -Generated alarms -Work orders (for Management Companies with the work order module enabled) *Investor users can view the following information for their own plants: -List of plants and their total production -Generated alarms

Screenshots

HTMercury4 screens
Retgen4 screens

Verdict

The call

The clearest difference is update cadence: Retgen at every 2 weeks against HTMercury's every 9 months. HTMercury's advantage is iOS requirement (8.0 vs 15). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

HTMercury ships an update every 9 months, Retgen every 2 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard2 real differences Β· 4 level
HTMercury versus Retgen: the parameters behind the verdict, then further details
ParameterHTMercuryRetgen
PriceFreeFree
Update frequencyEvery 9 monthsEvery 2 weeks β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod β€” better
Requires iOS8.0 β€” better15
Further details β€” not scored
Size49 MB34 MB
Age rating4+4+
DeveloperHT Italia srlRast Teknoloji

In-app purchases

None

HTMercury

No in-app purchases

None

Retgen

No in-app purchases

Questions

Is HTMercury free?
HTMercury is free to download, with no in-app purchases.
Is Retgen free?
Retgen is free to download, with no in-app purchases.
Do HTMercury or Retgen have ads?
Neither HTMercury nor Retgen shows ads.
Which is updated more often, HTMercury or Retgen?
HTMercury ships an update every 9 months, and Retgen every 2 weeks. Most recently, HTMercury was updated on October 26, 2026 and Retgen on October 27, 2026.

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