Oventrop vs autarc Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
autarc Pro
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Faster planning, more time for your trade business: autarc is the leading AI software for energy installers – from heat pump design and Solar PV planning to complete project management. Scan a room in 30 seconds with our app – radiators are detected automatically by AI. Heat loss calculations to MCS standards, emitter sizing, heat pump dimensioning and hydronic balancing are ready in around 15 minutes. Capture Solar PV systems by drone and photogrammetry directly on site. The automatic AI analysis then produces ready-to-use, MCS-compliant reports for both heat pumps and Solar PV. Our customers consistently report saving up to 12 hours per new system design. The autarc app connects everyone involved in an installation. Create new customers and projects on the go. From mobile site surveys at the customer's home, through scheduling and quoting, to hydronic balancing – everything can be handled and documented in autarc, quickly and easily. All information is transferred to the office in real time for fast job processing. What our customers say: "We use autarc at multiple sites across Germany. The software is very intuitive and requires no lengthy training." – Nikolaus Daume, Daume GmbH "Our closing rate has increased by around 20% thanks to the autarc heat pump check." – Lars Hückstädt, Hückstädt Heizungs und Sanitär in Plön
Screenshots
Verdict
The clearest difference is iOS requirement: Oventrop at 15.6 against autarc Pro's 17.0. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Oventrop ships an update monthly, autarc Pro every 4 weeks. Both last shipped on September 10, 2026.
| Parameter | Oventrop | autarc Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 44.4% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 48 MB | 282 MB |
| Age rating | 4+ | 4+ |
| Developer | Oventrop GmbH & Co. KG | autarc GmbH |
In-app purchases
Oventrop
No in-app purchases
autarc Pro
No in-app purchases






