Comparison

Oventrop vs HyTools

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

Head to head
About

Oventrop

This app assists with the design, calculation, and documentation of hydronic balancing for heating systems. It supports various standards and regulations, enabling users to calculate valve presets, heating loads, and radiator sizes. Documentation can be generated in PDF format or printed wirelessly.

Highlights
  • Project design with calculations (VdZ, BEG)
  • Heating check according to EnSimiMaV and DIN SPEC 15378
  • OV-DMC 3 measuring system integration
  • Simplified heating load calculation (DIN 12831)
  • DIN radiator and thermostatic valve sizing
  • ErP energy efficiency label creation
  • PDF documentation and wireless printing
Features
Read full description

Functions: • Project design incl. calculations for procedure A or B (VdZ, BEG) • Heating check according to EnSimiMaV und DIN SPEC 15378:2018-08 • OV-DMC 3 measuring system for adjustment/control measurement in heating and cooling systems • With valve identification for the new double regulating valves HydroControl and HydroCom • Simplified heating load calculation according to DIN 12831 • DIN radiator sizing (existing or new) • Sizing of thermostatic valves • Sizing of double regulating valves • Creation of ErP energy efficiency label • Unit converter • Oventrop News • Oventrop Contact Oventrop GmbH & Co. KG offers an app to support the execution and documentation of the hydronic balancing of heating systems. Whether on the construction site, at a consultation appointment or in the office, users of the OVapp can calculate the preset values of the Oventrop thermostatic valves and regulating and pipeline valves at any time with their smartphone or tablet and thus easily carry out the hydronic balancing of heating systems. In addition, a simplified heating load calculation according to DIN EN 12831-B3 or a radiator sizing with DIN radiators is integrated. The OVapp can be used to fulfil the requirements of procedure A and B of the VdZ form (individual measure) for hydronic balancing within the framework of the Federal Funding for efficient buildings (BEG) for existing buildings - procedure B is possible when using the Q-Tech thermostatic valves with flow control. The calculations can be documented using a PDF file or WLAN printer. The VdZ form is filled out automatically according to the designs. Furthermore, the OV-DMC 3 measuring system for the adjustment and control of heating and cooling systems is integrated. Pressure measurements can be carried out easily with the OVapp and the measuring sensor, flow values can be determined and presettings for the desired volume flows can be determined. With the ErP wizard there is the possibility to create ErP energy efficiency labels as composite labels for Oventrop products in the field of solar thermal energy. Furthermore, an extensive manufacturer product database of the VdZ with ErP-relevant products can be accessed.

About

HyTools

This app provides HVAC professionals with a comprehensive suite of hydronic calculation tools. It assists with tasks like valve sizing, pressure drop calculations, and radiator power estimation. The tool offers unit conversion and language selection for user convenience.

Highlights
  • Hydronic calculator
  • Valve sizing and presetting
  • Radiator power estimation
  • Pipe sizing
  • Unit conversion
  • Pressure maintenance calculation
Features
Read full description

IMI Hydronic Engineering proudly presents HyTools, the user-friendly hydronic calculator App for HVAC professionals. Features include: - Hydronic calculator (enter any two values and get the third one): - flow - Kv/Cv - pressure drop - power - flow - temperature difference - flow - valve setting - pressure drop - Dirt and air separator pressure drop calculation - Valve sizing and presetting - Radiator power estimation (panel and column) - Radiator valve sizing and presetting - Pipe sizing - Unit conversion - Run-time selection of localisation - Run-time selection of language - Pressure maintenance and vacuum degassing calculation and selection for heating, cooling and solar systems Stay tuned for great upcoming updates adding further hydronic calculation functions. Please visit www.imi-hydronic.com for more information and contact details. Phone numbers to local support can be found here: http://www.imi-hydronic.com/en/contact/ IMI Hydronic Engineering International SA is the leading global provider and expert in hydronic distribution systems and room temperature control, with experience in more than 100,000 projects worldwide. We help our customers everywhere optimise HVAC systems so they deliver desired comfort with optimal efficiency. IMI Hydronic Engineering is part of the international engineering group IMI plc which is listed as a member of the FTSE 100 on the London Stock Exchange.

Screenshots

Oventrop4 screens
HyTools4 screens

Verdict

The call

The clearest difference is rating: Oventrop at 5.0 against HyTools's 4.0. HyTools's advantage is ratings volume (5 vs 1). On price, review sentiment, update cadence and ads 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.

ReceptionRating · Positive reviews · Number of ratings

Oventrop holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: HyTools has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 44% of Oventrop's written reviews are positive against 50% of HyTools's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Oventrop ships an update monthly, HyTools every 6 weeks. The most recent releases landed on September 10, 2026 and July 25, 2026 respectively.

Scorecard2 real differences · 8 level
Oventrop versus HyTools: the parameters behind the verdict, then further details
ParameterOventropHyTools
PriceFreeFree
Rating5.0 (1 ratings) — better4.0 (5 ratings)
Positive reviews44.4% of reviews50.0% of reviews — better
Number of ratings15 — better
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size48 MB114 MB
Age rating4+4+
DeveloperOventrop GmbH & Co. KGIMI Hydronic Engineering International SA

Customer experience

Oventrop

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews18 reviews
Positive44.4%
Neutral22.2%
Negative33.3%

HyTools

All ratings5 ratings
Positive60.0%
Neutral20.0%
Negative20.0%
Written reviews8 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

None

Oventrop

No in-app purchases

None

HyTools

No in-app purchases

Questions

Is Oventrop free?
Oventrop is free to download, with no in-app purchases.
Is HyTools free?
HyTools is free to download, with no in-app purchases.
Which has better reviews, Oventrop or HyTools?
Oventrop is rated higher. Oventrop averages 5.0 out of 5 from 1 ratings, while HyTools averages 4.0 from 5 ratings.
Do Oventrop or HyTools have ads?
Neither Oventrop nor HyTools shows ads.
Which is updated more often, Oventrop or HyTools?
Oventrop ships an update monthly, and HyTools every 6 weeks. Most recently, Oventrop was updated on September 10, 2026 and HyTools on July 25, 2026.

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