Oventrop vs Johnson Controls CWa
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.
Johnson Controls CWa
This app assists HVAC field installers and service contractors with onsite tasks. It allows technicians to discover and configure equipment controllers, create punch lists, and balance VAV boxes, with exportable reports.
- Discover BACnet compatible equipment controllers
- View and test equipment hardware points
- Create real-time punch lists
- Configure equipment data
- Display trends and events
- Balance single duct VAV boxes
- Export balancing reports
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Connected Workflow applications (CWa) from Johnson Controls are mobile applications designed to enable HVAC Field Installers & Service Contractors to deliver onsite services at the customer locations. HVAC field technicians can: Installer Module - Discover BACnet compatible equipment controllers on a BAS field bus - View and test equipment hardware points - Create “real-time” punch lists per device Technician Module - Discover BACnet compatible JCI HVAC equipment controllers on a BAS field bus - View and configure equipment data in real-time - Displays trends and events Balancer Module - Discover BACnet compatible JCI HVAC VAV controllers on a BAS field bus - Balance single duct VAV boxes - Export balancing reports
Screenshots
Verdict
The clearest difference is rating: Oventrop at 5.0 against Johnson Controls CWa's 2.5. Oventrop also leads on update cadence (monthly vs every 3 months) and review sentiment (44% vs 33%). Johnson Controls CWa's advantage is ratings volume (24 vs 1). On price, ads, in-app purchases and monetization model 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 holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Johnson Controls CWa has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 44% of Oventrop's written reviews are positive against 33% of Johnson Controls CWa's.
Oventrop ships an update monthly, Johnson Controls CWa every 3 months. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.
| Parameter | Oventrop | Johnson Controls CWa |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 2.5 (24 ratings) |
| Positive reviews | 44.4% of reviews — better | 33.3% of reviews |
| Number of ratings | 1 | 24 — better |
| Update frequency | Monthly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.0 |
| Further details — not scored | ||
| Size | 48 MB | 75 MB |
| Age rating | 4+ | 4+ |
| Developer | Oventrop GmbH & Co. KG | Johnson Controls, Inc. |
Customer experience
Oventrop
Johnson Controls CWa
In-app purchases
Oventrop
No in-app purchases
Johnson Controls CWa
No in-app purchases
Questions
Is Oventrop free?
Is Johnson Controls CWa free?
Which has better reviews, Oventrop or Johnson Controls CWa?
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