Comparison

MSRX PDF Compressor vs PDF Guru:Sign & Watermark

Price, ratings, monetisation and update history for both apps, side by side — 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 — 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 — 5, 10, 20 or 25 MB — 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 — "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 • Compress several PDFs at once, with per-file results • History, with a running total of everything you have saved • Greyscale conversion for scans and photographs • Compress from any app's share sheet, without opening this one • A Shortcuts action, for compressing as part of an automation • 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

PDF Guru:Sign & Watermark

Easily scan, edit, and organize PDF documents. Add custom watermarks, logos, and signatures to professionalize your files. Convert various formats to PDF and manage your documents efficiently.

Highlights
  • AI-powered PDF scanning
  • Custom text and logo watermarks
  • Electronic signatures and annotations
  • PDF merging, splitting, and compression
  • OCR text recognition
  • File conversion to PDF
  • Document organization and search
Features
Read full description

Use PDF Guru to make every PDF clearer, more organized, and more professional. Whether you are scanning paper documents, studying files, or handling contracts, quotations, plans, and internal materials, PDF Guru gives you a simple one-stop PDF experience. It supports reading, editing, conversion, compression, merging, splitting, and file organization, and is especially useful for documents that need external presentation, team circulation, or branding. Add custom identifiers, watermarks, and logos to make files easier to recognize, share, deliver, and manage. PDF Scanning and Recognition -AI Scanning: Automatically capture paper documents, receipts, notes, certificates, and business cards. -Auto Edge Detection: Identify borders and correct scan angles. -Scanning Guidance: Use 5 scanning frames to align content and capture complete pages. -Image Optimization: Choose from 3 scanning modes for clearer results. -Batch Scanning: Scan multiple pages continuously and merge them into one PDF. -Scan to PDF: Generate high-quality PDFs for saving, sharing, and editing. -OCR Text Recognition: Recognize page text for selection, copying, highlighting, and annotation. Professional Document Marking -Add Watermark: Create custom text watermarks with adjustable color, transparency, size, rotation, and tiling. Apply them to all pages with one tap for anti-copying, file attribution, internal circulation, and standardized management. -Add Logo: Upload custom logo images and add brand, company, or personal marks to PDFs. Apply logos to all pages, save them to the logo library, and quickly reuse them for contracts, quotations, proposals, and promotional materials. Powerful Editing -PDF Annotation: Add highlights, underlines, and strikethroughs to make key content clear. -Fill and Insert Text: Fill forms or add text directly without converting files. -Electronic Signature: Sign with your finger for faster document processing. -Free Drawing: Scribble, circle, and mark key points freely. Advanced PDF Tools -Merge PDF: Combine multiple PDF files into one new document. -Split PDF: Extract selected pages or page ranges into new PDFs. -Lock PDF: Add password protection to sensitive files. -Compress PDF: Choose compression modes to balance file size and clarity. Efficient File Management -Local File Library: Manage local documents in one place. -Starred Files: Save important files and quickly access frequently used documents. -Multiple Sorting Methods: Sort by name, date, size, and more. -Keyword Search: Find files quickly and avoid repeated searching. PDF Conversion -Convert to PDF: Convert Word, Excel, PowerPoint, and images to PDF with one tap. -Batch Conversion: Upload multiple files and convert them to PDF at once. Download PDF Guru for a faster and easier document workflow. Whether you need to scan paper documents, read PDFs and e-books, edit PDFs, convert formats, compress files, or manage documents, PDF Guru provides lightweight and powerful support for study, work, and daily file processing. Privacy Policy: https://www.meuponline.com/pdfguru/privacy.html Terms of Service: https://www.meuponline.com/pdfguru/service.html

Screenshots

MSRX PDF Compressor4 screens
PDF Guru:Sign & Watermark4 screens

Verdict

The call

The clearest difference is in-app purchases: MSRX PDF Compressor at none against PDF Guru:Sign & Watermark's 4. PDF Guru:Sign & Watermark's advantage is update cadence (every 3 weeks vs every 5 months). On price, ads, device support and iOS requirement 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 Guru:Sign & Watermark sells 4 in-app purchases, starting at $9.99 per 7 days. MSRX PDF Compressor asks for nothing beyond the download.

UpkeepUpdate frequency

MSRX PDF Compressor ships an update every 5 months, PDF Guru:Sign & Watermark every 3 weeks. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

Scorecard2 real differences · 7 level
MSRX PDF Compressor versus PDF Guru:Sign & Watermark: the parameters behind the verdict, then further details
ParameterMSRX PDF CompressorPDF Guru:Sign & Watermark
PriceFreeFree
Rating—5.0 (4 ratings) — better
Number of ratings—4 — better
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad — betteriPhone
Requires iOS17.016.0 — better
Further details — not scored
Size7 MB203 MB
Age rating4+4+
DeveloperMrinal Singh RajaSharpmobi ltd

In-app purchases

None

MSRX PDF Compressor

No in-app purchases

4 purchases

PDF Guru:Sign & Watermark

Subscriptions4
  • Unlock All Features$9.997 Days
  • Unlock All Features3 Days trial$9.997 Days
  • Unlock All Features7 Days trial$9.997 Days
Show 1 more
  • Unlock All Features$59.991 Year

Questions

Is MSRX PDF Compressor free?
MSRX PDF Compressor is free to download, with no in-app purchases.
Is PDF Guru:Sign & Watermark free?
PDF Guru:Sign & Watermark is free to download, with in-app purchases available.
Do MSRX PDF Compressor or PDF Guru:Sign & Watermark have ads?
Neither MSRX PDF Compressor nor PDF Guru:Sign & Watermark shows ads.
Which is updated more often, MSRX PDF Compressor or PDF Guru:Sign & Watermark?
MSRX PDF Compressor ships an update every 5 months, and PDF Guru:Sign & Watermark every 3 weeks. Most recently, MSRX PDF Compressor was updated on October 31, 2026 and PDF Guru:Sign & Watermark on November 10, 2026.

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