Comparison

PDF Compressor vs Shrink PDF

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

Head to head
About

PDF Compressor

Features
Read full description

Reduce PDF file size by up to 95% with PDF Compressor. Compress, merge, organize, and view PDF files in one simple app built for easy sharing, email attachments, cloud uploads, and storage. PDF Compressor helps you shrink large documents while keeping them clear and readable. Choose the right compression level for every file, from light optimization to maximum size reduction. Main Features • Compress PDF files quickly • Batch compress multiple PDF documents • Merge multiple PDF files into one • Merge and compress in one flow • Choose simple compression levels: light, balanced, strong, or maximum • Reduce scanned and image-heavy PDFs • Convert PDFs to grayscale for smaller files • Preview and view PDF documents in the app • Reorder selected files before merging • See before and after file sizes • Keep compression history available offline • Share optimized PDFs by email, messaging, cloud storage, or other apps For Work, Study, and Everyday Documents Use PDF Compressor for invoices, reports, contracts, forms, study notes, scanned documents, receipts, and any large PDF that needs to be easier to send or store. Fast, Private, and Simple Your files are processed securely and automatically deleted after processing. No account is required to start using the app. Subscription Details Subscription auto-renews unless canceled at least 24 hours before the end of the current period. You can cancel anytime in Settings. Payment is charged to your Apple ID upon confirmation. Support: support@pdfcompressor.cloud Privacy Policy: https://pdfcompressor.cloud/legal/privacy Terms (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Shrink PDF

Features
Read full description

"File is too large." Seeing that right before a deadline is a special kind of stress. Shrink PDF makes heavy PDFs small enough to attach to an email. Pick a PDF, pick how much to compress, done. ◆ See exactly how much smaller it got ・The size before and after sit side by side, in big clear numbers ・In one measured example, 10.3 MB became 1.0 MB (about 90% smaller) ・How much you save depends on what is inside your PDF ◆ Three compression levels, all included ・For email — when it just has to be small ・Standard — a balance of size and appearance ・High quality — stays sharp, still lighter ・None of them are locked behind a purchase. You get all three ◆ Nothing is sent to a server ・Compression happens entirely on this device ・Your PDF is never uploaded anywhere ・Safe for contracts, invoices, scanned IDs and anything else you would rather not hand to a website ・Works with no internet connection at all ◆ Made for moments like ・A form that only accepts files up to 10 MB, and yours is bigger ・An email that bounced back because the attachment was too heavy ・Scanned paperwork that somehow takes several MB per page ・A university or workplace portal that refuses your upload ・A contract or invoice you need to send a client, but it is too large 【How the compression works】 This app rebuilds each page as an image to bring the size down. Because of that, text in the compressed PDF can no longer be selected, copied or searched. Your original file is left untouched, so you can keep both and use whichever fits. 【About Premium】 The app is free to use and the compression features are not limited in any way. The free version shows ads. Premium — an auto-renewing monthly subscription — removes all ads from the app. ・Payment is charged to your Apple ID account at confirmation of purchase ・The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period ・Manage or cancel in your device Settings → Apple ID → Subscriptions ・There is no free trial period Privacy Policy: https://hecuhecu.github.io/apps/pdf-compress/privacy/ Terms of Use: https://hecuhecu.github.io/apps/pdf-compress/terms/

Screenshots

PDF Compressor4 screens
Shrink PDF4 screens

Verdict

The call

The clearest difference is ads: PDF Compressor at none against Shrink PDF's shown. On price, update cadence, 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. PDF Compressor sells 2 in-app purchases, starting at $8.99 per month and Shrink PDF sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDF Compressor ships an update fortnightly, Shrink PDF every 8 days. Both last shipped on October 31, 2026.

Scorecard1 real difference · 5 level
PDF Compressor versus Shrink PDF: the parameters behind the verdict, then further details
ParameterPDF CompressorShrink PDF
PriceFreeFree
Update frequencyFortnightlyEvery 8 days — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.0 — better
Further details — not scored
Size48 MB39 MB
Age rating4+4+
DeveloperSoufiane Bouzianehiroki kawamura

In-app purchases

2 purchases

PDF Compressor

Subscriptions2
  • Monthly Subscription$8.991 Month
  • Yearly Subscription$39.991 Year
1 purchases

Shrink PDF

One-time1
  • Ad-Free Forever$17.99

Questions

Is PDF Compressor free?
PDF Compressor is free to download, with in-app purchases available.
Is Shrink PDF free?
Shrink PDF is free to download, with in-app purchases available.
Do PDF Compressor or Shrink PDF have ads?
Shrink PDF shows ads; PDF Compressor does not.
Which is updated more often, PDF Compressor or Shrink PDF?
PDF Compressor ships an update fortnightly, and Shrink PDF every 8 days. Most recently, PDF Compressor was updated on October 31, 2026 and Shrink PDF on October 31, 2026.

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