Comparison

Buderus ProLibrary vs Helios ELS

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

Head to head
About

Buderus ProLibrary

This app offers systematic support for installing and maintaining Buderus systems. Scan product data plates to access specific, comprehensive information and view concise videos detailing processes.

Highlights
  • Systematic installation and maintenance support
  • Concise instructional videos
  • Product data plate scanning
  • Specific product information retrieval
  • Comprehensive application details
Features
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Installation and maintenance using a systematic approach. The Buderus ProLibrary app provides you with efficient support during the maintenance and installation of Buderus systems. Concise videos display detailed processes. When using the app, scan the code on the data plate of the Buderus product. You will then receive specific and comprehensive information for your particular application.

About

Helios ELS

Features
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With this app, professionals can configure the ELS NFC mono-tube ventilation system easily, quickly and safely according to the design requirements. How it works Connect your Smartphone to ELS NFC with a simple touch - this works both on the installed device and in the packaging. The settings currently defined in the device are automatically displayed and can be adjusted directly. Another touch updates your ELS NFC with the new parameters. Once configured, parameters can be saved in the app, changed, shared and transferred to other devices – without power and without an internet connection. What can be set? Each ELS NFC offers three ventilation stages as well as basic ventilation and interval operation, each with definable volume flows of 7.5 to 100 m³/h. In addition, desired times for delayed start and overrun times can be saved individually for each ventilation level as well as interval times. Depending on the fan type, the app allows additional adjustments for the respective sensor control (humidity, presence, VOC or CO2). More features • The status overview provides information about the operating status of ELS NFC and displays currently measured sensor values and the volume flow. If necessary, detected problems and contact details can be sent directly from the app to Helios Support for clarification. • The volume flow adjustment can be used to compensate for on-site influencing factors. • Frequently used configurations can be saved in the library and assigned to projects. With search and filter functions, you always have an overview and can share configurations with your team. • The library contains a complete set of factory settings for all ELS NFC models, which can be reset at any time. • All relevant product information, from technical data to operating instructions for the selected device model, can be accessed via the app. Notes • The ELS NFC app is intended exclusively for professionals. The parameters defined in the design must be observed. For further information, please refer to the installation and operating instructions enclosed with the product. • The ELS NFC is configured exclusively via this app. Manual settings directly on the device are not possible.

Screenshots

Buderus ProLibrary4 screens
Helios ELS4 screens

Verdict

The call

The clearest difference is iOS requirement: Buderus ProLibrary at 12.0 against Helios ELS's 14.0. On price, update cadence, ads and in-app purchases 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

Buderus ProLibrary ships an update every 22 months, Helios ELS every 11 months. The most recent releases landed on September 17, 2026 and October 12, 2026 respectively.

Scorecard1 real difference · 7 level
Buderus ProLibrary versus Helios ELS: the parameters behind the verdict, then further details
ParameterBuderus ProLibraryHelios ELS
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 22 monthsEvery 11 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better14.0
Further details — not scored
Size12 MB28 MB
Age rating4+4+
DeveloperBosch Thermotechnik GmbHHelios Ventilatoren GmbH + Co KG

In-app purchases

None

Buderus ProLibrary

No in-app purchases

None

Helios ELS

No in-app purchases

Questions

Is Buderus ProLibrary free?
Buderus ProLibrary is free to download, with no in-app purchases.
Is Helios ELS free?
Helios ELS is free to download, with no in-app purchases.
Do Buderus ProLibrary or Helios ELS have ads?
Neither Buderus ProLibrary nor Helios ELS shows ads.
Which is updated more often, Buderus ProLibrary or Helios ELS?
Buderus ProLibrary ships an update every 22 months, and Helios ELS every 11 months. Most recently, Buderus ProLibrary was updated on September 17, 2026 and Helios ELS on October 12, 2026.

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