Comparison

Slim PDF vs PDF Compressor Offline

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

Head to head
About

Slim PDF

Features
Read full description

Slim PDF makes oversized PDFs smaller in seconds, directly on your iPhone or iPad. Your PDF files are processed on-device and are never uploaded to a document-processing server. COMPRESS FOR EMAIL AND UPLOADS Choose Email, WhatsApp, Web Upload, or a custom target size. Slim PDF automatically works toward the limit you select. SEE EXACTLY WHAT YOU SAVED Compare the original and compressed sizes, preview the result, then share it or save it to Files. BATCH COMPRESS Compress several PDFs in one run instead of processing them individually. MERGE AND SPLIT Combine multiple PDFs or divide a large document into smaller files without switching apps. PRIVATE PDF PROCESSING PDF compression, merging, and splitting happen on your device. No account is required, and your PDF contents are not uploaded for processing. SLIM PDF PRO Unlock unlimited compression, all compression presets, target-size tools, batch processing, merge and split, and biometric app lock. Monthly, annual, and lifetime options are available. Questions or feedback? Contact support from Settings inside the app. Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://docs.google.com/document/d/e/2PACX-1vRznAH_B9JavfvM4hbre2eIJYm1aBoXo02aw5T7ccS3XMh7VqV1LT3kqyLbojMguCsW0vDy08MUsa9q/pub

About

PDF Compressor Offline

Reduce PDF file sizes directly on your device without uploading them to servers. Compress single or multiple files, preview results, and save or share compressed copies. Offers batch processing and privacy-focused offline functionality.

Highlights
  • On-device PDF compression
  • No server uploads
  • Original files unchanged
  • Batch compression
  • Save, share, or preview
  • Offline processing
Features
Read full description

PDF Compressor Offline helps reduce PDF file size directly on your device. Your PDF files are not uploaded to our servers, and the original document is not modified. Choose one PDF or several PDFs, compress them, review the result, then save or share the new compressed copy. Before compression, the app also checks whether there is enough available storage to create the output safely. Highlights: • On-device PDF compression • PDF files are not uploaded to our servers • Original files remain unchanged • Save to Files, share, or preview compressed PDFs • Batch PDF compression support • Free users can process 2 PDFs per day • Free limits: up to 50 MB for one PDF, or 2 PDFs / 100 MB total per batch • Premium unlock: larger PDFs up to 1.5 GB, batches up to 75 PDFs, and no daily PDF limit • No account, no ads, no ad tracking PDF processing works offline. Privacy Policy: https://akifacet.github.io/info/pdf-compress/en/privacy/ Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Slim PDF4 screens
PDF Compressor Offline4 screens

Verdict

The call

Slim PDF and PDF Compressor Offline 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Slim PDF sells 3 in-app purchases, starting at $7.99 per month and PDF Compressor Offline sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Slim PDF versus PDF Compressor Offline: the parameters behind the verdict, then further details
ParameterSlim PDFPDF Compressor Offline
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.0 — better
Further details — not scored
Size20 MB6 MB
Age rating4+4+
DeveloperRUEBEN ANSOLIWEN AKANKOBATENGAkif Acet

In-app purchases

3 purchases

Slim PDF

Subscriptions2
  • All access monthly$7.991 Month
  • All access yearly$29.991 Year
One-time1
  • All access Lifetime$89.99
1 purchases

PDF Compressor Offline

One-time1
  • Lifetime Premium$9.99

Questions

Is Slim PDF free?
Slim PDF is free to download, with in-app purchases available.
Is PDF Compressor Offline free?
PDF Compressor Offline is free to download, with in-app purchases available.
Do Slim PDF or PDF Compressor Offline have ads?
Neither Slim PDF nor PDF Compressor Offline shows ads.

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