Comparison

Merge PDF vs PDF Compressor | Reduce Size

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

Head to head
About

Merge PDF

Easily combine, split, rotate, and organize PDF files directly on your device. This app offers a complete set of tools for managing PDFs offline, ensuring your documents remain private and secure.

Highlights
  • Combine multiple PDF files
  • Split PDFs by page number or equal parts
  • Rotate pages by 90, 180, or 270 degrees
  • Delete unwanted pages
  • Rearrange page order
  • Insert blank or existing pages
  • View PDFs within the app
  • Offline processing
Features
Read full description

Merge PDF is the fastest way to combine, split, rotate and organize PDF files directly on your iPhone or iPad. Every operation happens on your device, with no internet connection required and no files ever uploaded to a server. Whether you are a student assembling research documents, a professional preparing client reports, or anyone who works with PDF files daily, Merge PDF gives you a complete set of tools in one clean, easy-to-use app. MERGE PDF FILES Select any number of PDF files from your device and combine them into a single document in seconds. Drag them into the exact order you want before merging. The original files are never modified. SPLIT PDF FILES Divide any PDF into separate documents by choosing exact page numbers where the split should happen. Or split a file into any number of equal parts automatically. Useful for breaking large reports, contracts or manuals into smaller sections. ROTATE PAGES Rotate individual pages or an entire PDF by 90, 180 or 270 degrees. Fix scanned documents that came in sideways or upside down without re-scanning a single page. DELETE PAGES Remove any page or set of pages from a PDF instantly. Clean up scanned documents, strip cover pages, or cut out sections you do not need before sharing a file. REARRANGE PAGES Reorder the pages of any PDF by moving them into any sequence you choose. Reorganize a document without printing, cutting or re-scanning anything. ADD PAGES Insert a blank page at any position in an existing PDF. Or take pages from another PDF file and insert them at a specific location. Perfect for adding cover pages, separators or supplementary content. VIEW PDF FILES Open and read any PDF file directly inside the app with the built-in viewer. No need to switch to another application just to check the result of your edits. SHARE AND SAVE When your PDF is ready, save it to your device or share it instantly using the system share sheet. Send it to any app, AirDrop it, attach it to an email, or upload it wherever you need it. 100 PERCENT OFFLINE Merge PDF requires no internet connection at any point. All processing runs locally on your device using on-device technology. Your documents are never sent to any server, never analyzed by any third party, and never stored anywhere outside your own device. What you edit stays yours. NO ACCOUNT REQUIRED There is no sign-up, no login and no subscription needed to use the core tools. Open the app and get to work immediately. DESIGNED FOR IPHONE AND IPAD The app is optimized for both iPhone and iPad with a clean, modern interface built for speed and ease of use. Every tool is accessible from a single screen with no complicated menus. Merge PDF is the private, offline-first PDF editor that respects your documents and your time. Terms of use: https://docs.google.com/document/d/1z78VOjx1cbjUipYch3jbUjGxxk69YOxQxZoRj2eBopA/edit?usp=sharing Privacy Policy: https://www.termsfeed.com/live/75bc94a7-5737-4d49-a7c3-c141e626878a

About

PDF Compressor | Reduce Size

Features
Read full description

PDF Compressor | PDF Resize is a fast, reliable, and powerful tool for reducing the size of your PDF files. Whether you need to share documents faster, save storage space, email files easily, or meet upload limits, PDF Compressor | PDF Resize provides efficient and high-quality compression in just a few taps. PDF Compressor | PDF Resize uses advanced optimisation technology to maintain text and image clarity while significantly reducing file size. Adjust compression levels, preview results, and manage your documents with a simple, modern interface. Key Features: • Compress PDF files instantly • Adjustable compression levels for custom output quality • Reduce file size without quality loss • Fast and easy one-tap compression • Multiple compression levels • Save storage space on your device • Share compressed files • Secure processing — your files stay private Use Cases: • Reduce PDFs for email attachments • Meet upload size limits for work or school • Save storage space on your device • Optimize large scanned documents • Prepare PDFs for printing or sharing • Send files faster on slow connections Perfect For: • Students submitting assignments • Professionals sending documents • Anyone managing large PDF files Why Users Choose This App: PDF Compressor | PDF Resize balances strong compression with clean output, giving you smaller files without sacrificing essential detail. Its straightforward design and high-speed processing make it an essential tool for anyone working with PDFs regularly. Download now and make your PDFs smaller, faster, and easier to share. Subscription Details: • Title: Savory All Access • Length: 1 year & Lifetime • Price: $34.99 per year, $4.99 per week (auto-renews) and $59.99 lifetime. • Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • Privacy Policy: https://docs.google.com/document/d/1IysoItFPBXxdxDkkTJ6FRT1Of8qXqAwwB0op5coC1nU/edit?usp=sharing

Screenshots

Merge PDF4 screens
PDF Compressor | Reduce Size4 screens

Verdict

The call

The clearest difference is update cadence: PDF Compressor | Reduce Size at every 3 weeks against Merge PDF's every 6 months. Merge PDF's advantage is iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Merge PDF sells 2 in-app purchases, starting at $4.99 per 7 days and PDF Compressor | Reduce Size sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Merge PDF ships an update every 6 months, PDF Compressor | Reduce Size every 3 weeks. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 7 level
Merge PDF versus PDF Compressor | Reduce Size: the parameters behind the verdict, then further details
ParameterMerge PDFPDF Compressor | Reduce Size
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.6
Further details — not scored
Size45 MB23 MB
Age rating4+4+
DeveloperAndrii KulchytskyiKELVIN SENANU WALLACE

In-app purchases

2 purchases

Merge PDF

Subscriptions2
  • Merge PDF Weekly with 3 days free3 Days trial$4.997 Days
  • Merge PDF Yearly$19.991 Year
3 purchases

PDF Compressor | Reduce Size

Subscriptions2
  • All Access$4.997 Days
  • All Access$34.991 Year
One-time1
  • All Access Forever$59.99

Questions

Is Merge PDF free?
Merge PDF is free to download, with in-app purchases available.
Is PDF Compressor | Reduce Size free?
PDF Compressor | Reduce Size is free to download, with in-app purchases available.
Do Merge PDF or PDF Compressor | Reduce Size have ads?
Neither Merge PDF nor PDF Compressor | Reduce Size shows ads.
Which is updated more often, Merge PDF or PDF Compressor | Reduce Size?
Merge PDF ships an update every 6 months, and PDF Compressor | Reduce Size every 3 weeks. Most recently, Merge PDF was updated on October 15, 2026 and PDF Compressor | Reduce Size on October 6, 2026.

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