Comparison

MSRX PDF Compressor vs Compress PDF

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

Head to head
About

MSRX PDF Compressor

Features
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MSRX PDF Compressor makes PDFs smaller without turning your text into pictures. Most PDF compressors flatten every page to an image. The file shrinks, but you lose selectable text, search, links, and anything a screen reader can use. This one looks at each page first. Pages with real text keep it. Pages that are scans or photographs get re-encoded, which is where nearly all the saving in a scanned document lives anyway. TEXT STAYS TEXT A 135-page workbook came out 33% smaller with all 138,000 characters still selectable and searchable. A 224-page scanned textbook went from 100 MB to 9 MB. The difference is the document, not the setting โ€” and the app tells you which one you have before you commit. FIT UNDER A LIMIT Tell it the limit your email or upload form imposes โ€” 5, 10, 20 or 25 MB โ€” and it works out the settings for you, testing real pages rather than guessing. If it cannot reach your limit, it says so and hands back the smallest file it managed. It will not pretend it succeeded. SEE WHERE THE MEGABYTES ARE Before you compress, the app breaks the file down: images, fonts, page content, overhead. Then it tells you plainly what to expect โ€” "10 of 28 pages are scans. Those compress well; the rest keep their text." COMPARE BEFORE AND AFTER Put the original and the result side by side, page by page, and confirm for yourself that nothing was lost. ALSO IN THIS VERSION โ€ข Compress several PDFs at once, with per-file results โ€ข History, with a running total of everything you have saved โ€ข Greyscale conversion for scans and photographs โ€ข Compress from any app's share sheet, without opening this one โ€ข A Shortcuts action, for compressing as part of an automation โ€ข Full Dark Mode, Dynamic Type, and VoiceOver support HONEST ABOUT WHAT IT CANNOT DO Compression works on images. A document that is mostly text and embedded fonts has very little to give, and the app says so up front instead of letting you find out afterwards. Scanned documents are where you will see the dramatic numbers. PRIVATE BY DESIGN Everything happens on your iPhone or iPad. Your files are never uploaded, and the app has no analytics, no accounts, and no network access at all. FILE LIMITS Up to 500 MB and 2,000 pages per document. Free. No ads, no subscriptions, no in-app purchases.

About

Compress PDF

Features
Read full description

That PDF is too big to email or upload? Compress PDF shrinks it down in seconds โ€” right on your iPhone, so your documents never leave your device. No ads. No daily limits. No subscription. Pay once. โ€ข REAL SIZE REDUCTION โ€” re-compresses the pages so scanned and image-heavy PDFs get dramatically smaller. โ€ข THREE LEVELS โ€” Light, Recommended, or Maximum, so you control quality vs size. โ€ข NEVER BIGGER โ€” if a PDF is already optimized, we keep your original instead of inflating it. โ€ข 100% PRIVATE โ€” everything happens on your iPhone. Your documents are never uploaded. โ€ข NO ADS, NO SUBSCRIPTION โ€” pay once. No "2 free per day" trap, no watermark. Pick a PDF, choose a level, share or save. Done. Best for scanned documents, contracts, and image-heavy PDFs that won't fit an upload limit.

Screenshots

MSRX PDF Compressor4 screens
Compress PDF4 screens

Verdict

The call

The clearest difference is in-app purchases: MSRX PDF Compressor at none against Compress PDF's 1. Compress PDF's advantage is update cadence (every 6 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Compress PDF sells 1 one-off in-app purchase. MSRX PDF Compressor asks for nothing beyond the download.

UpkeepUpdate frequency

MSRX PDF Compressor ships an update every 5 months, Compress PDF every 6 days. The most recent releases landed on August 21, 2026 and September 9, 2026 respectively.

Scorecard2 real differences ยท 4 level
MSRX PDF Compressor versus Compress PDF: the parameters behind the verdict, then further details
ParameterMSRX PDF CompressorCompress PDF
PriceFreeFree
Update frequencyEvery 5 monthsEvery 6 days โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS17.016.0 โ€” better
Further details โ€” not scored
Size7 MB1 MB
Age rating4+4+
DeveloperMrinal Singh RajaJhomar Maravillas

In-app purchases

None

MSRX PDF Compressor

No in-app purchases

1 purchases

Compress PDF

One-time1
  • Unlock Unlimited$4.99

Questions

Is MSRX PDF Compressor free?
MSRX PDF Compressor is free to download, with no in-app purchases.
Is Compress PDF free?
Compress PDF is free to download, with in-app purchases available.
Do MSRX PDF Compressor or Compress PDF have ads?
Neither MSRX PDF Compressor nor Compress PDF shows ads.
Which is updated more often, MSRX PDF Compressor or Compress PDF?
MSRX PDF Compressor ships an update every 5 months, and Compress PDF every 6 days. Most recently, MSRX PDF Compressor was updated on August 21, 2026 and Compress PDF on September 9, 2026.

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