Oventrop vs Lange ProApp
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
Read full descriptionHide 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.
Lange ProApp
This app provides professionals in the SHK trade with essential tools for their daily work. Access real-time pricing, stock information, orders, offers, and delivery notes. Features include a barcode scanner and navigation to warehouse locations.
- Real-time pricing and stock display
- View orders, offers, and delivery notes
- Barcode scanner for quick item entry
- Find and navigate to warehouse locations
- Intuitive interface for professionals
Read full descriptionHide full description
Mit der Lange ProApp der Friedrich Lange GmbH sind Sie immer bestens ausgestattet ô egal ob auf der Baustelle, im Lager oder im Büro. Schnell, einfach und zuverlässig: Die App bietet Ihnen alle wichtigen Funktionen direkt auf Ihrem Smartphone. Top-Funktionen: - Artikel suchen & direkt bestellen ô mit Echtzeit-Preisen und Bestandsanzeige - Aufträge, Angebote & Lieferscheine einsehen ô mobil und übersichtlich - Barcode-Scanner ô Artikel sekundenschnell erfassen - Lagerorte finden & per Navigation ansteuern - Einfache, intuitive Bedienung ô entwickelt für Profis im SHK-Handwerk Mit der Lange ProApp haben Sie Ihr digitales Werkzeug immer griffbereit ô für mehr Effizienz, Flexibilität und Tempo im Arbeitsalltag. - Jetzt kostenlos herunterladen und durchstarten! Hinweis: Die Nutzung ist ausschließlich für registrierte Kunden der Friedrich Lange GmbH möglich (Login erforderlich). Anbieter der App: Friedrich Lange GmbH Bornkampsweg 58 D-22761 Hamburg http://www.friedrich-lange.de/privatkunden/impressum/
Screenshots
Verdict
The clearest difference is review sentiment: Lange ProApp at 100% against Oventrop's 44%. Oventrop's advantage is update cadence (monthly vs every 13 months). 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 ships an update monthly, Lange ProApp every 13 months. The most recent releases landed on October 23, 2026 and October 6, 2026 respectively.
| Parameter | Oventrop | Lange ProApp |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 44.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Monthly — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 48 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Oventrop GmbH & Co. KG | SCT Schiele GmbH |
Customer experience
Oventrop
Lange ProApp
In-app purchases
Oventrop
No in-app purchases
Lange ProApp
No in-app purchases
