Comparison

Smart PDF Compressor vs RedactPDF

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

Head to head
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 — 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.

About

RedactPDF

Features
Read full description

RedactPDF – Secure PDF Redaction Protect your privacy and secure your documents with RedactPDF, a simple and powerful tool for removing sensitive information from PDF files. All processing is done locally on your device. Your files are never uploaded, stored, or shared. You stay in full control of your data. KEY FEATURES • Automatically detect sensitive text • Manually redact any area with precision • One-tap black-out protection • Offline processing, no cloud required • No account, no tracking, no ads • Fast and lightweight performance PRIVACY FIRST Your privacy is our top priority. RedactPDF does not collect, store, or transmit any personal data. All document processing happens entirely on your device. No servers. No uploads. No data leaks. PERFECT FOR • Business documents • Legal files • Financial statements • Personal records • Academic papers Before sharing your PDF, make sure your private information stays private. WHY CHOOSE REDACTPDF? + Simple and easy to use + Secure by design + Trusted offline processing + Professional-quality results Whether you are a student, professional, or individual user, RedactPDF helps you protect what matters most.

Screenshots

Smart PDF Compressor4 screens
RedactPDF2 screens

Verdict

The call

The clearest difference is price: Smart PDF Compressor at Free against RedactPDF's $0.99. Smart PDF Compressor also leads on update cadence (every 9 days vs every 2 months). RedactPDF's advantage is iOS requirement (15.0 vs 18.0). On ads, in-app purchases 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

Smart PDF Compressor is free to download; RedactPDF costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smart PDF Compressor ships an update every 9 days, RedactPDF every 2 months. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Smart PDF Compressor versus RedactPDF: the parameters behind the verdict, then further details
ParameterSmart PDF CompressorRedactPDF
PriceFree — better$0.99
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size1 MB2 MB
Age rating4+4+
DeveloperQuan Danglee xiaoming

In-app purchases

None

Smart PDF Compressor

No in-app purchases

None

RedactPDF

No in-app purchases

Questions

Is Smart PDF Compressor free?
Smart PDF Compressor is free to download, with no in-app purchases.
Is RedactPDF free?
RedactPDF costs $0.99, with no in-app purchases.
Do Smart PDF Compressor or RedactPDF have ads?
Neither Smart PDF Compressor nor RedactPDF shows ads.
Which is updated more often, Smart PDF Compressor or RedactPDF?
Smart PDF Compressor ships an update every 9 days, and RedactPDF every 2 months. Most recently, Smart PDF Compressor was updated on October 2, 2026 and RedactPDF on October 5, 2026.

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