Comparison

PDF Pro vs Dark PDF

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

Head to head
About

PDF Pro

Edit, annotate, and read PDF documents on your iPhone and iPad. Highlight text, add notes, shapes, voice recordings, and photos. Search your entire PDF library, fill out forms, and sign documents.

Highlights
  • Edit and annotate PDFs
  • Highlight text and add notes
  • Embed audio and photo annotations
  • Full-text search of PDF library
  • Fill out and sign PDF forms
  • Organize PDFs with folders and tags
  • Import from cloud storage
Features
Read full description

PDF Pro lets you read, edit and annotate your PDF documents directly on your iPhone and iPad. Highlight text, take notes, embed shapes or draw with your finger. You can even embed voice recordings or photo annotations. Full-text-search your entire PDF library with just a single tap. Above all PDF Pro comes with full-featured PDF form and signature support. Key-Features At A Glance: • POWERFUL SEARCH: ∙ Full-text-search your entire PDF library. ∙ Search inside specific documents with easy navigation through the search results. ∙ Look-up selected text directly on Wikipedia or in the included dictionaries. • FILE-MANAGEMENT: ∙ Group your PDFs in folders and tag them with colorful labels. ∙ Import PDFs from your Dropbox®, Microsoft OneDrive® or Google Drive®. ∙ Add PDFs via USB or WiFi. ∙ Open E-Mail attachments. • CLEAR VIEW: ∙ Easily browse through all your annotations. ∙ Full PDF outline support. You can even search the outline. ∙ Get an overview of all your bookmarked or annotated pages just with a single tap. • SHARE and PRINT: ∙ Easily share your annotated documents with your friends or co-workers. ∙ Print your annotated and edited PDFs. ∙ You can even share or print single pages of a document. • HIGH SPEED and STABILITY: ∙ Rapid viewing of PDF documents. ∙ Smooth display of very large PDF files. • NIGHT MODE: ∙ Makes reading in the dark much easier on the eyes. • SECURITY: ∙ Support for password-protected PDFs • AND MUCH MORE... Premium Features and Premium Offer include: • ANNOTATIONS and NOTES: ∙ Highlight text, take notes or draw with your finger. ∙ Powerful shape editor for arrows, rectangles, circles, lines and much more. ∙ Embed audio and photo annotations into your PDFs. ∙ Use predefined stamps or create your own. • DOCUMENT EDITOR: ∙ Create new pages. ∙ Export pages or merge them into existing documents. ∙ Reorder, rotate and delete pages. • CONTENT EDITOR: • Modify the existing content of PDF documents. • MULTITASKING: ∙ Work with multiple PDFs at a time. ∙ Copy and paste annotations, shapes, images or text from one PDF document into another. • FORM SUPPORT: ∙ Just fill out your PDF form, sign it with your handwritten signature and you are ready to send it via E-Mail or print it via AirPrint®. A monthly or annual subscription is required to get access to all premium features and premium offer. --- Subscriptions automatically renew monthly or yearly depending on your plan unless auto-renew is turned off at least 24-hours before the end of the current period. Plans are priced at $3.99USD monthly and $24.99USD yearly (pricing may vary in countries other than the U.S.). Payment will be charged to your App Store Account at confirmation of purchase. To avoid automatic renewal, you must turn off auto-renew at least 24 hours before your subscription ends. You can turn off auto-renew at any time from your App Store Account Settings. Terms of Use: https://pdf-pro.net/terms-of-service/ Privacy Policy: https://pdf-pro.net/privacy-policy/

About

Dark PDF

Features
Read full description

Dark PDF turns any PDF into a calm, eye-friendly reading experience. Read for hours at night — no glare, no strain, just clean pages in beautiful dark themes. Whether it's a textbook, contract, research paper, or a novel, Dark PDF makes long reading sessions comfortable on iPhone and iPad. WHY YOU'LL LOVE IT • 4 handcrafted dark themes — true black, dim, sepia and more for any lighting • Easy on the eyes — cut eye strain during late-night and long reading sessions • Real-time search — find any word instantly with live highlighting • Jump to any page in a tap — no endless scrolling • Pick up where you left off — recent files always one tap away • Built for iPhone & iPad — a native, responsive layout on every screen • Reads offline — your documents stay private on your device TRY IT FIRST Open a sample and feel the dark reading experience right away. When you're ready for your full library, start a 3-day free trial and unlock every theme and premium feature. Cancel anytime. PRIVACY FIRST Your files never leave your device. No accounts, no document tracking, no clutter. Give your eyes the reading experience they deserve. — Premium is an auto-renewing subscription (monthly or yearly) with a 3-day free trial. Payment is charged to your Apple ID. It auto-renews unless canceled at least 24 hours before the period ends. Manage or cancel anytime in your Apple ID settings. Terms: https://moz6.com/app-term • Privacy: https://moz6.com/app-privacy • info@moz6.com

Screenshots

PDF Pro4 screens
Dark PDF4 screens

Verdict

The call

The clearest difference is iOS requirement: Dark PDF at 15.4 against PDF Pro's 17.0. On price, update cadence, ads and in-app purchases 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 Pro sells 12 in-app purchases, starting at $1.99 per month and Dark PDF sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PDF Pro ships an update every 2 months, Dark PDF monthly. The most recent releases landed on September 24, 2026 and July 22, 2026 respectively.

Scorecard1 real difference · 9 level
PDF Pro versus Dark PDF: the parameters behind the verdict, then further details
ParameterPDF ProDark PDF
PriceFreeFree
Rating4.7 (6.9K ratings) — better—
Positive reviews60.3% of reviews—
Number of ratings6.9K — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.015.4 — better
Further details — not scored
Size91 MB11 MB
Age rating4+4+
DeveloperDominic RodemerMuhammet Ozturk

Bugs and requests

PDF Pro

Reported bugs

5 issues
  • Annotations and highlights randomly disappearing
  • Compatibility issues with newer iOS versions
  • Corrupted PDF files after editing
  • Slow performance on older devices
  • Inconsistent behavior when switching between PDFs

Requested features

5 requests
  • Improved bookmarking and note-taking
  • Seamless iCloud/cloud storage integration
  • Customizable keyboard shortcuts
  • Advanced text editing and OCR capabilities
  • Better organization and folder management

Dark PDF

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

PDF Pro

Subscriptions12
  • Offer - Monthly - macOS3 Days trial$1.991 Month
  • Offer - Monthly - iOS3 Days trial$2.991 Month
  • Premium - Monthly - iOS3 Days trial$3.991 Month
Show 9 more
  • Premium - Monthly - macOS3 Days trial$4.991 Month
  • Offer - Annual - iOS3 Days trial$12.991 Year
  • Offer - Annual - macOS3 Days trial$22.991 Year
  • Premium - Annual - iOS3 Days trial$24.991 Year
  • Offer - macOS + iOS3 Days trial$24.991 Year
  • Offer - iOS + macOS3 Days trial$29.991 Year
  • Premium - Annual - macOS3 Days trial$44.991 Year
  • Premium - iOS + macOS3 Days trial$49.991 Year
  • Premium - macOS + iOS3 Days trial$49.991 Year
4 purchases

Dark PDF

Subscriptions4
  • Monthly - Unlimited - Black Friday3 Days trial$1.991 Month
  • Yearly - Unlimited Pdf,Black Friday3 Days trial$9.991 Year
  • Monthly - Unlimited PDF$49.991 Month
Show 1 more
  • Yearly - Unlimited PDF$99.991 Year

Questions

Is PDF Pro free?
PDF Pro is free to download, with in-app purchases available.
Is Dark PDF free?
Dark PDF is free to download, with in-app purchases available.
Do PDF Pro or Dark PDF have ads?
Neither PDF Pro nor Dark PDF shows ads.
Which is updated more often, PDF Pro or Dark PDF?
PDF Pro ships an update every 2 months, and Dark PDF monthly. Most recently, PDF Pro was updated on September 24, 2026 and Dark PDF on July 22, 2026.

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