PDF Compressor * Compress PDF vs Calm PDF Image Toolkit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Compressor * Compress PDF
Reduce PDF file sizes quickly and easily, saving storage and speeding up sharing. Manage, preview, and organize your documents with multiple compression options and a user-friendly interface. Keep your files private and accessible.
- Compress single or multiple PDFs
- Three compression levels
- Preview before and after compression
- Import from Files, iCloud, or other apps
- Rename files for organization
- Share via AirDrop, email, etc.
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Effortlessly compress, preview, and manage your PDF files—all in one simple and powerful app. PDF Compressor helps you reduce file sizes without sacrificing quality, saving storage space and making file sharing faster than ever. Whether you’re a student, professional, or everyday user, this app is designed to make your PDF management quick and stress-free. COMPRESS SMARTLY • Compress single or multiple PDFs at once with batch processing • Choose from three compression levels—Smallest Size, Balanced, or High Quality • Instantly view the original size, new size, and percentage reduction for each file ORGANIZE & MANAGE • Import multiple PDFs from Files, iCloud, or other apps • View all compressed files on the home screen with clear details • Rename files for better organization PREVIEW & SHARE • Preview PDFs before and after compression to ensure quality • View detailed file information, including size reduction percentage • Share your compressed PDFs via AirDrop, email, or any compatible app • Open files instantly without leaving the app WHY USERS LOVE PDF COMPRESSOR • Fast, accurate, and reliable compression • Clean, modern, and easy-to-use interface • Keeps your documents private—no data uploaded to external servers • Save storage space and share PDFs effortlessly PERFECT FOR • Students sharing assignments or notes • Professionals sending contracts, reports, or portfolios • Anyone looking to reduce large PDF sizes for storage or upload PRO Version: Unlock the full potential of our app with premium version. Payment will be charged to your iTunes account at confirmation of purchase. Subscriptions automatically renew unless auto-renew is turned off 24-hours before the end of the current period. Accounts will be charged for renewal within 24 hours of the end of the current period, and a renewal fee will be provided. The unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that product. Please note that a subscription or one-time lifetime purchase is required for the complete functionality of the app. Privacy: https://sites.google.com/view/kttechapps-privacy/home Terms: https://sites.google.com/view/kttechapps-terms/home Take control of your PDF files today. Download PDF Compressor and experience the easiest, fastest, and most secure way to shrink, organize, and share your documents.
Calm PDF Image Toolkit
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Calm PDF is a powerful, beautifully designed PDF and image toolkit that lets you convert, view, merge, compress, and extract text — all without leaving your device. No cloud uploads, no server processing, no account needed. Your files stay on your phone, always. Whether you need to quickly convert a photo to PDF, merge multiple documents before a meeting, compress large files for email, or extract text from a scanned receipt, Calm PDF handles it all with a clean, intuitive interface that gets out of your way. WHAT YOU CAN DO FOR FREE: • Convert images to PDF — turn any photo into a professional document instantly • Format conversion — PNG to JPG, JPG to PNG with quality control • PDF to image — export PDF pages as JPG or PNG for sharing • Merge PDFs — combine multiple documents into a single file effortlessly • Image compression — reduce photo file sizes without visible quality loss • PDF Reader — enjoy 8 unique reading modes: Sepia, Night, Eye Care, Focus, High Contrast, and more • Annotations — highlight text, underline, add sticky notes, stamps, and bookmarks • File management — organize documents into color-coded folders with smart filtering and sorting • Page navigation — jump to any page instantly, search text within any PDF • 6 stunning themes — Light, Dark, Warm, Kids, Senior, and Monochrome • 20+ languages — including full Arabic, Urdu, Hebrew, and Persian RTL support UNLOCK PRO FOR MORE POWER: • Unlimited bulk conversions — free users get 2 per day, Pro gets unlimited • PDF Compression — dramatically reduce PDF file sizes for easy sharing • Watermarks — add text or image watermarks to protect your documents • PDF Split — divide documents by page number or custom page ranges • WebP conversion — convert PDFs and images to modern WebP format • Create from scratch — build new PDF documents from a blank page • HEIC/HEIF support — convert Apple's native photo format to JPG or PDF • OCR Text Extraction — pull copyable, searchable text from scanned images and photos • Searchable PDF — transform any scanned PDF into a fully searchable document with OCR • Batch processing — convert or compress dozens of images at once • App Lock — protect your documents with PIN code, Face ID, or Touch ID PRIVACY & SECURITY: • 100% on-device processing — nothing is uploaded to any server, ever • No account required — download and start using immediately • No tracking, no analytics, no ads (Pro removes all ads) • iCloud and Google Backup support for your settings and preferences • Your documents are never accessed by anyone but you DESIGNED FOR EVERYONE: • Kids theme — bright, colorful interface designed for young students • Senior theme — extra-large text and high contrast for comfortable reading • 8 PDF reading modes — find the perfect setting for any lighting condition • Minimum 44px touch targets — easy to tap, even for users with motor difficulties • Full RTL support — seamless experience for Arabic, Hebrew, Urdu, and Persian speakers SUPPORTED FORMATS: PDF, JPG, JPEG, PNG, WebP, BMP, GIF, HEIC, HEIF Calm PDF is built for people who want a fast, reliable, and private PDF toolkit without the bloat of enterprise apps or the privacy concerns of cloud-based services. No subscriptions required — a lifetime purchase option is available for those who prefer to pay once. Download Calm PDF and take full control of your documents — calmly, privately, and beautifully.
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Verdict
PDF Compressor * Compress PDF and Calm PDF Image Toolkit are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. PDF Compressor * Compress PDF sells 3 in-app purchases, starting at $3.99 per month and Calm PDF Image Toolkit sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | PDF Compressor * Compress PDF | Calm PDF Image Toolkit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | Kamalkumar Trapasiya | Gokhan Alp Atar |
In-app purchases
PDF Compressor * Compress PDF
- Monthly Access$3.991 Month
- Yearly Access$9.991 Year
- Lifetime Access$19.99
Calm PDF Image Toolkit
- Calm PDF Pro$2.991 Month
- Calm PDF Pro$19.991 Year
- Calm PDF Pro — Lifetime$39.99
Questions
Is PDF Compressor * Compress PDF free?
Is Calm PDF Image Toolkit free?
Do PDF Compressor * Compress PDF or Calm PDF Image Toolkit have ads?
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