VARTA.install vs whatwatt
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VARTA.install
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VARTA.install is the official app for commissioning, service and maintenance of VARTA energy storage systems. With the app, certified electricians can quickly and efficiently commission the new VARTA complete system, consisting of the VARTA.wall battery storage system, the VARTA.hybrid inverter and the VARTA.energymeter. The guided commissioning process is supported by the hotspot capability of the components and the simple scanning of the attached QR codes. Commissioning the VARTA.wall in slave mode remains possible, for example in combination with third-party inverters. In addition to commissioning, VARTA.install also supports service and maintenance tasks. You get an overview of your installed systems and have the most important information at hand in service cases. VARTA.install is the ideal companion for VARTA energy storage systems and enables smooth digital handling of installation, service and maintenance.
whatwatt
This utility app is preparing for future enhancements. Developers are working on new functionalities that will be revealed soon.
- Future feature groundwork
- Upcoming enhancements
- Developer updates
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The app that allows you to install whatwatt Go on a compatible smart meter, receive smart meter data in real time and connect your smart meter to services. Made for Switzerland.
Screenshots
Verdict
The clearest difference is update cadence: whatwatt at every 2 weeks against VARTA.install's every 2 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.
VARTA.install ships an update every 2 months, whatwatt every 2 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | VARTA.install | whatwatt |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 86 MB | 53 MB |
| Age rating | 4+ | 4+ |
| Developer | VARTA Storage GmbH | whatwatt AG |
In-app purchases
VARTA.install
No in-app purchases
whatwatt
No in-app purchases
