PowerMaster vs Service Time Card
Price, ratings, monetisation and update history for both apps, side by side — 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.
Service Time Card
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Service time card pdf creation for emailing.
Screenshots
Verdict
The clearest difference is update cadence: PowerMaster at every 4 months against Service Time Card's every 9 months. PowerMaster also leads on iOS requirement (12.0 vs 17.4). 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.
PowerMaster ships an update every 4 months, Service Time Card every 9 months. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.
| Parameter | PowerMaster | Service Time Card |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 17.4 |
| Further details — not scored | ||
| Size | 52 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | Cyber Energy Co., Ltd. | Anthony Vela |
In-app purchases
PowerMaster
No in-app purchases
Service Time Card
No in-app purchases
Questions
Is PowerMaster free?
Is Service Time Card free?
Do PowerMaster or Service Time Card have ads?
Which is updated more often, PowerMaster or Service Time Card?
Other comparisons
