PowerMaster vs Volteec
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
PowerMaster
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Monitor your UPS and get prompt notification anywhere and anytime! PowerMaster app provides a status overview of your UPS. It enables you to monitor your UPS and supports event notifications to ensure instant event update. PowerMaster app also supports multiple UPS monitoring. You can select a UPS from the UPS List and check its status. Download free PowerMaster app and enjoy the benefits the following features bring: - Monitor Monitor page provides an overview of the UPS current status, including power supplied, voltage supplied, power condition, battery capacity, battery status, estimated runtime and UPS load. Multiple UPS monitoring is also available. - Event log Event log info provides the a list of happened events.
Volteec
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Advanced UPS monitoring for self-hosted environments. Requires a backend server (NUT or Volteec Backend). Volteec is a private, read-only UPS status viewer for iPhone and iPad, designed for homelab and self-hosted setups. Connect the app to your own monitoring backend to see: β’ UPS status (Online / On Battery / Offline) β’ Battery percentage and runtime (when available) β’ Load and voltage details (when available) β’ Real-time updates Optional push alerts are available via Relay for critical status changes. Note: Push alerts require your monitoring server to be reachable from the internet over HTTPS. If the server is offline or only accessible locally, notifications wonβt be delivered. No Volteec account is required by default. The app does not collect personal data.
Screenshots
Verdict
The clearest difference is update cadence: Volteec at every 3 weeks against PowerMaster's every 4 months. PowerMaster's advantage is iOS requirement (12.0 vs 26.2). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PowerMaster ships an update every 4 months, Volteec every 3 weeks. The most recent releases landed on July 10, 2026 and September 12, 2026 respectively.
| Parameter | PowerMaster | Volteec |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 3 weeks β better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 β better | 26.2 |
| Further details β not scored | ||
| Size | 52 MB | 6 MB |
| Age rating | 17+ | 4+ |
| Developer | Cyber Energy Co., Ltd. | TEODOR DRAGAN |
In-app purchases
PowerMaster
No in-app purchases
Volteec
No in-app purchases









