Comparison

PowerMaster vs Compresser

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

Head to head
About

PowerMaster

Features
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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.

About

Compresser

Features
Read full description

Compresser is a fast, private way to shrink files on your iPhone & iPad. Reclaim storage, share smaller files – all 100% on your device. Your files are processed on your device. Why Compresser? Your privacy matters. Compresser processes everything locally. This means: • No Cloud Uploads: Files stay on device. • No Accounts, No Sign-Up. • No account and no cloud upload — files are processed on your device. • Fast Results: Results in seconds. • Quality Preservation: Reduce size, maintain quality. What You Can Compress: • Photos: JPEG, PNG, HEIC, WebP – adjust quality, resize, convert. • Videos: MP4, MOV, AVI – dramatically reduce size. • PDFs: Optimize structure, strip metadata. • Audio Files: MP3, WAV, AAC, FLAC – smaller files, great sound. Key Features: • Batch Processing: Compress multiple files simultaneously. • Smart Auto-Detection: Compresser finds an efficient way to shrink any file. • Before & After Preview: See exact space saved. • Compression History: Record all compressed files and savings. • Format Conversion: Change image and video formats. • Quality Controls: Adjust output quality and dimensions. • Share Out: Send compressed files straight to any app. • Works Offline: No internet needed. How It Works: 1. Tap 'Quick Compress' or select file type. 2. Choose your files. 3. Adjust settings (optional). 4. Tap 'Compress' – done in seconds! 5. Save or share. Privacy First: Compresser is built on privacy. Your files are processed locally, never uploaded. We do not upload your files for compression. The free version uses Unity Ads, and the app uses crash and performance diagnostics as described in the privacy policy. Ad personalization follows your consent choices. Free & Premium: Enjoy Compresser's powerful features for free with banner ads. Upgrade to Compresser Premium via in-app purchase to remove all ads and unlock exclusive extras, including advanced batch options and priority support. Additional Details: • Light and Dark Theme • Haptic Feedback • Accessibility Support • iPad-Optimized • 11 Languages: English, Polish, Spanish, German, French, Portuguese, Russian, Ukrainian, Japanese, Korean, Chinese Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

PowerMaster4 screens
Compresser4 screens

Verdict

The call

The clearest difference is in-app purchases: PowerMaster at none against Compresser's 3. PowerMaster also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.5). Compresser's advantage is update cadence (weekly vs every 4 months). On price and device support there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Compresser sells 3 in-app purchases, starting at $8.99 per year. PowerMaster asks for nothing beyond the download.

UpkeepUpdate frequency

PowerMaster ships an update every 4 months, Compresser weekly. The most recent releases landed on October 11, 2026 and October 14, 2026 respectively.

Scorecard4 real differences Ā· 2 level
PowerMaster versus Compresser: the parameters behind the verdict, then further details
ParameterPowerMasterCompresser
PriceFreeFree
Update frequencyEvery 4 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.5
Further details — not scored
Size52 MB56 MB
Age rating17+4+
DeveloperCyber Energy Co., Ltd.Maciej Sieminski

In-app purchases

None

PowerMaster

No in-app purchases

3 purchases

Compresser

Subscriptions1
  • Premium Annual$8.991 Year
One-time2
  • Tip Jar$0.99
  • Premium Lifetime$19.99

Questions

Is PowerMaster free?
PowerMaster is free to download, with no in-app purchases.
Is Compresser free?
Compresser is free to download, with in-app purchases available.
Do PowerMaster or Compresser have ads?
Compresser shows ads; PowerMaster does not.
Which is updated more often, PowerMaster or Compresser?
PowerMaster ships an update every 4 months, and Compresser weekly. Most recently, PowerMaster was updated on October 11, 2026 and Compresser on October 14, 2026.

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