Oventrop vs SYR
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.
SYR
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The SYR Hans Sasserath GmbH & Co. KG stands for innovative and high-quality system solutions for potable water and heating water management worldwide. The family company from Korschenbroich has been developing and manufacturing valves and systems for potable water installations, for the protection of heating systems and heating water conditioning for 75 years. SYR’s convincing App has a well-structured menu with two main fields “Connect“ and “Products“. In addition, it offers direct access to other functions like barcode-scanner or media library. The “Connect”-functionality, the core element of SYR’s App makes it possible to control valves from a distance. Products from the categories leakage detection, water treatment, hygiene control and heating system monitoring can be monitored and controlled when you are out and about. Thus, the user can check and change all settings anytime as desired – and he will be informed e.g. in case a leakage problem is detected: in the event of an emergency, it will be possible to react without delay. The App is a tangible advantage for our business and trade partners as it offers them real value added: overviews of all product areas (water and filter technology, pressure regulation, protection devices, safety valves, valves for heating systems, heating water conditioning and SYR Connect), brochures, videos explaining products and their installation, FAQ´s, dates of current shows and required data of all central contacts. The integrated QR-code scanner completes SYR’s App. It provides access to more detailed information on spare parts and instructions for use and installation of a specific device. The corresponding QR-code can be found on an adhesive label enclosed to the SYR products. This additional service facilitates the installer’s work. As an example, should he require information on the operation of a valve when service is due later on or if spare parts have to be replaced, the code will provide him the necessary explanations or he can directly place an order to the specialized dealer. SYR – Innovative solutions for smart people
Screenshots
Verdict
The clearest difference is update cadence: Oventrop at monthly against SYR's every 3 months. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Oventrop ships an update monthly, SYR every 3 months. The most recent releases landed on September 10, 2026 and June 4, 2026 respectively.
| Parameter | Oventrop | SYR |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 44.4% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 48 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | Oventrop GmbH & Co. KG | ConSoft |
In-app purchases
Oventrop
No in-app purchases
SYR
No in-app purchases







