WattTools vs Compresser
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
WattTools
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An audio, video, picture, GIF, document converter tool. 【Video】 1. Support MP4, AMV, AVI, MOV, MPG, M4V, MKV, WMV, FLV, MPEG, RM, VOB, TS, WEBM, ASF, 3GP, SWF, MXF, F4V, 3G2, OGV formats. 2. Support functions: format conversion, video audio extraction, video compression, video cropping, video merging, video speed changing, volume adjustment, and video noise reduction. 【Audio】 1. Support MP3, WAV, FLAC, M4A, AAC, OGG, AC3, AMR, OPUS, AIFF, MP2, GSM, DTS, AU, CAF, OGA, W64, VOC, SPX, IRCAM, WMA formats. 2. Support functions: format conversion, audio compression, audio cropping, audio merging, audio speed changing, volume adjustment, audio noise reduction, audio to text, text to audio. 【Image】 1. Support JPG, PNG, JPEG, WEBP, TGA, BMP, JP2, GIF, PXC, TIF, TIFF, PBM, PGM, EXR, PAM, PFM, RAS, SGI, SUN, XBM, XWD, YUV formats. 2. Support functions: format conversion, image compression, ID photo. 【GIF】 Support video to GIF. 【Document】 Supports converting images to PDF. More features will be added in the future. 【WattTools automatic renewal VIP service statement】 1. After the purchase is confirmed, your iTunes account will be charged and the subscription will be automatically renewed unless automatic renewal is turned off at least 24 hours before the end of the current subscription. Your account will be charged for renewal within the last 24 hours prior to the end of the current subscription, and the cost of the renewal will be determined. 2. If you need to cancel your subscription, please manually open "Settings" on your Apple phone --> Enter "iTunes Store and App Store" --> Click "Apple ID", select "View Apple ID", enter the "Account Settings" page, and click "Subscribe", select WattToolsVIP to cancel the subscription User Agreement:https://doc-hosting.flycricket.io/watttoolsterms/9af75cf3-424d-4c82-bc73-fc895bfd953a/terms Privacy Policy:https://doc-hosting.flycricket.io/watttools/83c8178a-3717-4dd6-8181-376aaa46900d/privacy
Compresser
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Compresser is a fast, private way to shrink files on your iPhone & iPad. Reclaim storage, share smaller files – all 100% on your device. Nothing leaves your phone, ensuring privacy. 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 Integration: Share directly to Compresser. • 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 collect, store, or share your personal data or media. Your trust is our priority. 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 • 10 Languages: English, Polish, Spanish, German, French, Portuguese, Ukrainian, Japanese, Korean, Chinese Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: WattTools at none against Compresser's shown. Compresser's advantage is update cadence (every 6 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement 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. WattTools sells 2 in-app purchases, starting at $0.99 per 7 days and Compresser sells 3 in-app purchases, starting at $8.99 per year. Whichever you choose, the download price is not the number that matters.
WattTools ships an update every 3 weeks, Compresser every 6 days. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.
| Parameter | WattTools | Compresser |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.5 |
| Further details — not scored | ||
| Size | 101 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | 源 张 | Maciej Sieminski |
In-app purchases
WattTools
- Weekly subscription$0.997 Days
- 3Credits$0.99
Compresser
- Premium Annual$8.991 Year
- Tip Jar$0.99
- Premium Lifetime$19.99









