Comparison

PDF Compressor vs Smart PDF Compressor

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

Head to head
About

PDF Compressor

Features
Read full description

Compresso helps you reduce PDF file size quickly while keeping documents clear and readable. Compress, save space, and share smaller PDFs in just a few taps. Everything runs directly on your iPhone for speed and privacy. Key features: โ€ข Fast on-device PDF compression โ€ข Multiple compression levels for size vs quality โ€ข Preserve readability for text-heavy files โ€ข Works great for scans, reports, and forms โ€ข Simple, clean workflow: import, compress, share โ€ข Compression history for easy tracking โ€ข Optional Face ID app lock โ€ข Private processing โ€” files stay on your device Pro subscription: Compresso Pro includes unlimited compression with Weekly or Annual plans. Subscription details: โ€ข Payment is charged to your Apple ID at confirmation of purchase โ€ข Subscription renews automatically unless canceled at least 24 hours before the end of the current period โ€ข Your account is charged for renewal within 24 hours before the end of the current period โ€ข You can manage or cancel your subscription anytime in App Store account settings Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://1kbapps.com/pdf-crush-support-privacy-terms/

About

Smart PDF Compressor

Features
Read full description

Compress PDF files instantly on your iPhone and iPad. Smart PDF Compressor reduces file sizes by up to 95% while maintaining readable quality โ€” perfect for sharing via email, messaging apps, or cloud storage. ALL PROCESSING IS LOCAL Your documents never leave your device. No internet connection required, no cloud uploads, no data collection. Complete privacy guaranteed. KEY FEATURES - Smart Compression: Automatically detects scanned vs. digital PDFs and applies optimal compression settings - Three Presets: Light (best quality), Standard (balanced), and Maximum (smallest file size) - Batch Compression: Compress multiple PDFs at once with progress tracking - Full Control: Adjust image quality, resolution (72-300 DPI), and grayscale conversion - Side-by-Side Preview: Compare original and compressed versions before saving - File History: Browse, preview, rename, and share all your compressed files - Native iPad Support: Full iPad experience with tab bar navigation HOW IT WORKS 1. Tap + to select a PDF from Files 2. Choose your compression level or customize settings 3. Tap Compress and see the results instantly 4. Share or save your compressed PDF PERFECT FOR - Reducing email attachment sizes - Saving storage space on your device - Compressing scanned documents - Preparing files for upload to web forms - Sharing large PDFs via messaging apps Smart PDF Compressor uses Apple's PDFKit and advanced image processing to deliver fast, reliable compression without sacrificing readability.

Screenshots

PDF Compressor4 screens
Smart PDF Compressor4 screens

Verdict

The call

The clearest difference is in-app purchases: Smart PDF Compressor at none against PDF Compressor's 2. Smart PDF Compressor also leads on update cadence (every 9 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. PDF Compressor sells 2 in-app purchases, starting at $2.99 per 7 days. Smart PDF Compressor asks for nothing beyond the download.

UpkeepUpdate frequency

PDF Compressor ships an update every 3 months, Smart PDF Compressor every 9 days. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

Scorecard2 real differences ยท 4 level
PDF Compressor versus Smart PDF Compressor: the parameters behind the verdict, then further details
ParameterPDF CompressorSmart PDF Compressor
PriceFreeFree
Update frequencyEvery 3 monthsEvery 9 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.6 โ€” better18.0
Further details โ€” not scored
Size2 MB1 MB
Age rating4+4+
DeveloperVikram SinghQuan Dang

In-app purchases

2 purchases

PDF Compressor

Subscriptions2
  • CrushPDF Premium Weekly$2.997 Days
  • CrushPDF Premium Annual$19.991 Year
None

Smart PDF Compressor

No in-app purchases

Questions

Is PDF Compressor free?
PDF Compressor is free to download, with in-app purchases available.
Is Smart PDF Compressor free?
Smart PDF Compressor is free to download, with no in-app purchases.
Do PDF Compressor or Smart PDF Compressor have ads?
Neither PDF Compressor nor Smart PDF Compressor shows ads.
Which is updated more often, PDF Compressor or Smart PDF Compressor?
PDF Compressor ships an update every 3 months, and Smart PDF Compressor every 9 days. Most recently, PDF Compressor was updated on October 4, 2026 and Smart PDF Compressor on October 2, 2026.

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