Comparison

pdf vs PhotoDeDupe

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

Head to head
About

pdf

Manage and annotate PDF files on your iPad with fast page turning and intuitive finger-writing. Easily import, organize, and share your notes with friends. Offers a seamless reading and editing experience.

Highlights
  • Fast page turning and content scanning
  • Intuitive finger-writing with zoom-in
  • Easy PDF import via Dropbox, Email, or iTunes
  • Organized bookshelves with search
  • Variety of pens, highlighters, and text notes
  • Export annotated PDFs via email
Features
Read full description

Utilize pdf-notes to manage all the pdf files on your iPad. Fast display, quick page-turning even a thousand pages, useful finger-writing and email your notes to your friends. Differentiation-1. While turning pages of paperbooks fast, you can glance over the pages. While turning pages of pdf-notes fast, you can still run over the contents. Speedy page turning and scanning the contents with pdf-notes or paperbooks. Differentiation-2. There are many pdf readers allow you to annotate; but do you know which app allows you can write any notes in a second? If you are using pdf-notes, you may experience very fast and intuitive finger-writing like: zoom-in and note by double-tap or; writing with one finger, page-turning with two fingers, pen-changing with three fingers. - Easy importing PDF files through (DropBox, Email or Safari's) "Open In..." or iTunes - Categorized multiple bookshelves(booklists) with powerful search - Displaying pages as optimized size 1024x768 of iPad - Portrait and landscape view - Pinch zoom and crop page-margins - Fast loading and Speedy page-turning - Finger-writing with a variety of pens, highlighters and text notes - Easy "zoom-in and note" on a magnified screen by a double tap - One-step page-turning using 2 fingers on editing mode - One-step pen-changing or undo/redo using 3 fingers on editing mode - Exporting annotated PDF files to Email - External display and screen brightness controls - AirPrint and multi-tasking Misunderstandings about pdf-notes: - Not only pdf-notes but every app recently updated is removed from the open-in menu because iOS5 or formers currently show only 10 apps in open-in menu. - iPad/iphone Mail/iBooks can't display PDF annotations so that please open it in the other pdf apps. - please visit the support site for more information http://bit.ly/f6D31P Blog http://pdf-notes.com Email musebook@musebook.com Twitter http://twitter.com/musebook4u YouTube http://youtu.be/4AyRyFq9yxg NOTE: All content contained herein is subject to change without notice.

About

PhotoDeDupe

Features
Read full description

PhotoDeDupe helps you reclaim space and organize your photo library by finding and removing duplicates quickly and safely. It scans your camera roll, groups similar or identical photos, and lets you compare them side‑by‑side so you can keep the best shot and remove the rest with confidence. Key features - Fast duplicate detection and smart grouping - Side‑by‑side comparisons to choose the best photo - One‑tap cleanup for quick space savings - Safe deletions with clear previews and confirmations - Lightweight, easy‑to‑use interface Whether you’re cleaning up years of photos or just keeping your library tidy, PhotoDeDupe makes the process simple and stress‑free.

Screenshots

PhotoDeDupe4 screens

Verdict

The call

The clearest difference is price: PhotoDeDupe at Free against pdf's $9.99. pdf's advantage is in-app purchases (none vs 1) and ads (none vs shown). On 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

PhotoDeDupe is free to download; pdf costs $9.99 up front. PhotoDeDupe sells 1 one-off in-app purchase. pdf asks for nothing beyond the download.

UpkeepUpdate frequency

pdf ships an update every 2 weeks, PhotoDeDupe every 2 months. The most recent releases landed on October 23, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 6 level
pdf versus PhotoDeDupe: the parameters behind the verdict, then further details
ParameterpdfPhotoDeDupe
Price$9.99Free — better
Rating4.4 (27 ratings) — better—
Positive reviews71.5% of reviews—
Number of ratings27 — better—
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPadiPhone, iPad — better
Requires iOS16.0 — better17.0
Further details — not scored
Size138 MB58 MB
Age rating4+4+
DeveloperAMuseTec Co., Ltd.Le Nguyen

In-app purchases

None

pdf

No in-app purchases

1 purchases

PhotoDeDupe

One-time1
  • Remove Ads$9.99

Questions

Is pdf free?
pdf costs $9.99, with no in-app purchases.
Is PhotoDeDupe free?
PhotoDeDupe is free to download, with in-app purchases available.
Do pdf or PhotoDeDupe have ads?
PhotoDeDupe shows ads; pdf does not.
Which is updated more often, pdf or PhotoDeDupe?
pdf ships an update every 2 weeks, and PhotoDeDupe every 2 months. Most recently, pdf was updated on October 23, 2026 and PhotoDeDupe on October 28, 2026.

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