Comparison

Diooist vs PDF Compact

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

Head to head
About

Diooist

Features
Read full description

Remote control app for steam generator equipment.

About

PDF Compact

Features
Read full description

PDF Compact is the fast and easy solution to reduce the size of large PDF files directly on your iPhone or iPad – and now it also converts images into PDFs that you can compress instantly. Whether for email, cloud uploads, government portals, or archiving: PDF Compact reliably reduces the file size of your documents with just a few taps. New Features Import images & convert them to PDF Select a photo from your gallery – PDF Compact instantly creates a PDF that you can compress right away. ** Features ** - Select & view PDFs or images Open PDFs directly from Files, iCloud, or other apps – or import an image from your photo library. - Efficient PDF compression Choose between different compression levels such as Small or Medium – optimized for sending or storing. - Preview before saving Check the result immediately before saving or sharing it. - Smart file naming Compressed PDFs are automatically saved with a suffix like β€œ_small” or β€œ_medium”. - Share & send Share your compressed PDFs via email, messenger apps, or AirDrop. - Privacy‑friendly Your documents are used only for processing – no permanent storage without your consent. Perfect for Emails with size limits Uploads to portals & authorities School, work & office Quick sharing on the go PDF Compact makes large PDFs small – now even from images. Simple, fast, and reliable.

Screenshots

Diooist4 screens
PDF Compact4 screens

Verdict

The call

The clearest difference is iOS requirement: Diooist at 11.0 against PDF Compact's 26.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Diooist ships an update every 3 months, PDF Compact every 5 months. The most recent releases landed on October 3, 2026 and September 28, 2026 respectively.

Scorecard1 real difference Β· 5 level
Diooist versus PDF Compact: the parameters behind the verdict, then further details
ParameterDiooistPDF Compact
PriceFreeFree
Update frequencyEvery 3 months β€” betterEvery 5 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 β€” better26.0
Further details β€” not scored
Size56 MB22 MB
Age rating4+4+
Developerε­ζ˜‚ 李Gerhard Lentschik

In-app purchases

None

Diooist

No in-app purchases

None

PDF Compact

No in-app purchases

Questions

Is Diooist free?
Diooist is free to download, with no in-app purchases.
Is PDF Compact free?
PDF Compact is free to download, with no in-app purchases.
Do Diooist or PDF Compact have ads?
Neither Diooist nor PDF Compact shows ads.
Which is updated more often, Diooist or PDF Compact?
Diooist ships an update every 3 months, and PDF Compact every 5 months. Most recently, Diooist was updated on October 3, 2026 and PDF Compact on September 28, 2026.

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