Comparison

PowerMaster vs UPSnut Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

PowerMaster

Features
Read full description

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.

About

UPSnut Pro

Monitor your Uninterruptible Power Supply (UPS) status remotely. View battery charge, voltage, and time on battery from a compatible server or network management card. Supports SNMP and dark mode.

Highlights
  • Retrieve UPS status information
  • Monitor battery charge and voltage
  • View time on battery
  • Supports SNMP v1/v2c
  • Dark mode support
  • Compatible with iOS 16+
Features
Read full description

UPSnut Pro can be used to retrieve UPS status information, like battery charge level, battery voltage, time on battery and so on, from an UPS with a network management card (compatible with SNMPv1/v2c) or NUT (Network UPS Tools)/ APC UPS Daemon (apcupsd) server that has an UPS (Uninterruptible Power Supply) hooked up to it. Features: - App supports the latest NUT server / APCUPSD and is compatible with all iPhone running iOS 16 or higher. - SNMP Support for v1 and v2c. - Dark mode is supported. Requirements: - Any UPS compatible with NUT or APCUPSD or UPS with SNMP management (following IETF SNMP standard) - Server - this can be any device that can host the NUT / APCUPSD service (Note: you can not run the server on an iPhone, the phone is just the client. You can use an embedded device, such as a Raspberry Pi), Server not necessary if UPS has management card (and supports IETF UPS monitoring SNMP) - your phone For information regarding set up of the NUT server, please check the project's site: https://networkupstools.org And for information regarding set up of the APCUPSD server, please check the project's site: https://apcupsd.org Support: UPSnut Pro (the iOS app) is a fully compatible, but unofficial client developed to allow your device to connect to NUT / APCUPSD servers. No support will be provided for bugs in NUT server or in APCUPSD, but only for bugs related to this iOS app. Tested on CyberPower UPS, no affiliation with cyberpower or APC or any UPS manufacturer.

Screenshots

PowerMaster4 screens
UPSnut Pro4 screens

Verdict

The call

The clearest difference is price: PowerMaster at Free against UPSnut Pro's $1.99. PowerMaster also leads on update cadence (every 4 months vs every 9 months) and iOS requirement (12.0 vs 16.0). On 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

CostPrice · In-app purchases · Ads · Monetization

PowerMaster is free to download; UPSnut Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

PowerMaster ships an update every 4 months, UPSnut Pro every 9 months. The most recent releases landed on July 10, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 6 level
PowerMaster versus UPSnut Pro: the parameters behind the verdict, then further details
ParameterPowerMasterUPSnut Pro
PriceFree — better$1.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 4 months — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size52 MB4 MB
Age rating17+4+
DeveloperCyber Energy Co., Ltd.Ioan Moldovan

In-app purchases

None

PowerMaster

No in-app purchases

None

UPSnut Pro

No in-app purchases

Questions

Is PowerMaster free?
PowerMaster is free to download, with no in-app purchases.
Is UPSnut Pro free?
UPSnut Pro costs $1.99, with no in-app purchases.
Do PowerMaster or UPSnut Pro have ads?
Neither PowerMaster nor UPSnut Pro shows ads.
Which is updated more often, PowerMaster or UPSnut Pro?
PowerMaster ships an update every 4 months, and UPSnut Pro every 9 months. Most recently, PowerMaster was updated on July 10, 2026 and UPSnut Pro on September 9, 2026.

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