Comparison

UPDF vs PDFDarkMode

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

Head to head
About

UPDF

This app is a powerful PDF editor for mobile devices, offering AI-powered features for summarizing, translating, and chatting with documents. It allows users to read, edit, annotate, convert, and sign PDFs, as well as scan paper documents into editable files. Manage all your PDF files and protect them with security features.

Highlights
  • AI-powered summarization and translation
  • Edit text, images, and watermarks in PDFs
  • Annotate with various markup tools
  • Convert PDFs to Word, Excel, and PPT
  • Scan documents to editable PDFs
  • Sign and fill PDF forms
  • Organize and protect PDF files
Features
Read full description

UPDF for iOS is an AI-powered PDF editor for iPhone and iPad. Read, edit, annotate, convert, sign, and AI chat with your PDFs — all from your iOS device. Summarize lengthy documents, translate full PDFs, scan paper to PDF, and manage all your files in one place. Amazing features of UPDF for iOS: Edit PDF - Edit text in PDF (change color, font style, font size) - Edit images in PDF (rotate, extract, replace, and crop images) - Edit watermark in PDF (add, edit, delete and favor watermark) - Edit links in PDF (add, edit, copy, and delete) AI Assistant - Summarize, translate, explain, and rephrase lengthy PDFs in minutes. - Engage in a chat with UPDF AI and ask it any questions you have. - Summarize or translate PDF by pages. - Export conversations to Markdown or TXT files. - NEW AI Bookmark Agent: Auto-generate bookmarks and get instant section summaries for any PDF. - NEW AI Semantic Search: Search your PDF by meaning, not just exact words. - NEW AI Editing Suite: Rewrite, refine tone, or correct grammar directly. Read PDF - Flexible reading: vertical and horizontal scrolling, single page or two-page view - Dark mode to protect your eyes - Add and manage bookmarks with AI Bookmark Agent's help - Search text in PDF - Present PDF as a slideshow - Text-to-speech support Annotate PDF - Annotate PDFs using markup tools: pencil, highlight, underline, strikethrough, squiggly line - Add text boxes, text comments, callouts, sticky notes - Add shapes, stamps, and stickers to PDFs - Free-hand drawing on PDF pages OCR PDF - Convert scanned documents and images into searchable and editable PDFs - Recognize text in 38 languages Scan to PDF - Scan physical documents to PDF with your camera - Scan ID cards onto one page - Crop, rotate, and filter scanned images Convert PDF - Convert PDF to Word, Excel, PPT, and images Organize PDF Pages - Insert, replace, extract, split, rotate, remove, and reorder pages in PDFs - Merge multiple PDFs into one file - Copy, paste, and share specific pages in a PDF Sign PDF & Fill PDF Form - Create handwritten signatures - Import and add image signatures - Fill PDF form and add e-signatures - Save signatures to cloud for cross-platform use Create PDF - Create PDF with blank, lined, dotted, grid, and graph papers - Combine multiple files/images into one PDF Protect PDF - Password-protect PDFs to restrict opening, editing, and printing - Add or remove watermarks - Add digital signatures Manage Files - Upload, create, rename, move, copy, duplicate, and organize files or folders - Unzip files by simply tapping .zip files - Search for files - Supports two-finger multiple selections and operations - Move files or folders to trash, and find deleted items in the trash - Protect PDF files with a password or unlock protected PDF files - Compress one or multiple files into a zip file Security Space - Protect your privacy by moving files or folders to Security Space - Enable Face ID & Passcode to access your Security Space Import File - Import files from Photos albums - Import files from the Files App - Transfer files from a computer over the same Wi-Fi View files in All Formats - Browse dozens of different file formats including PDFs, Office documents (.doc, .docx, .ppt, .pptx, .xls, .xlsx), Pages, Keynotes, and Numbers with a single app - Open other formats such as text, HTML, XML, Web Archive, Images (JPG, JPEG, GIF, PNG, TIFF, SVG, BMP), video, audio *** Pro Features of In-App Purchase *** - Use UPDF across all platforms including desktops and mobiles - Free Users will get 1 GB of Cloud Storage; Paid users will get 10 GB of Cloud Storage for free - Advanced PDF features such as Convert PDF with OCR, batch process, etc. are available on the desktop - Unlimited use of Scan to PDF (Free trial only scans up to 5 pages) - Unlimited use of Security Space (Trial version stores up to 10 items) - Secure App with passcode/TouchID/FaceID Need help? Email us at support@superace.com

About

PDFDarkMode

Easily convert PDFs to a comfortable dark mode with custom text and background colors. Reduce eye strain while reading or studying long documents. Save and revisit your personalized PDFs in a private library.

Highlights
  • Upload PDFs from device
  • Customize text and background colors
  • Preview dark mode changes
  • Download converted PDFs
  • Personal PDF library
  • Private by design
Features
Read full description

PDFDarkMode makes your PDFs easier on the eyes, day or night. Upload any PDF, choose your own text and background colors, preview your changes, and download your converted document directly within the app. Whether you’re studying, reading long-form writing, or reviewing technical documents, PDFDarkMode helps reduce eye strain and make your PDFs visually comfortable and fully personalized. Features • Upload any PDF from Files or your device • Customize text color and background color • Preview your converted PDF in full dark mode • Download it directly • Save and revisit all converted PDFs in your personal library • One-time in-app purchase to download a dark mode PDF for $2.99 • Upgrade to PDFDarkMode Pro for $9.99 to unlock unlimited dark mode PDF downloads Private by Design No logins. No analytics. No tracking. Your PDFs stay private.

Screenshots

UPDF4 screens
PDFDarkMode4 screens

Verdict

The call

The clearest difference is rating: PDFDarkMode at 5.0 against UPDF's 4.6. PDFDarkMode also leads on review sentiment (100% vs 84%) and update cadence (every 4 days vs fortnightly). UPDF's advantage is ratings volume (678 vs 1). On price, ads, in-app purchases and monetization model 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. UPDF sells 13 in-app purchases, starting at $9.99 per month and PDFDarkMode sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

PDFDarkMode holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: UPDF has 678 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 84% of UPDF's written reviews are positive against 100% of PDFDarkMode's.

UpkeepUpdate frequency

UPDF ships an update fortnightly, PDFDarkMode every 4 days. The most recent releases landed on September 23, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 6 level
UPDF versus PDFDarkMode: the parameters behind the verdict, then further details
ParameterUPDFPDFDarkMode
PriceFreeFree
Rating4.6 (678 ratings)5.0 (1 ratings) — better
Positive reviews84.4% of reviews100.0% of reviews — better
Number of ratings678 — better1
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size195 MB4 MB
Age rating4+4+
DeveloperSuperace Software Technology Co., Ltd.Wildcatter LLC

Customer experience

UPDF

All ratings678 ratings
Positive90.6%
Neutral1.9%
Negative7.5%
Written reviews933 reviews
Positive84.4%
Neutral5.4%
Negative10.3%

PDFDarkMode

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

UPDF

Reported bugs

3 issues
  • Inability to edit text directly in PDF files
  • Inconsistent behavior when switching between devices
  • Occasional loss of editing progress when app is minimized

Requested features

5 requests
  • Add password protection for PDF files
  • Improve file organization and folder management
  • Implement keyboard shortcuts for power users
  • Expand OCR capabilities and text extraction
  • Allow custom signature and stamp imports

PDFDarkMode

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

UPDF

Subscriptions10
  • Monthly Subscription$9.991 Month
  • UPDF AI Unlimited$15.001 Month
  • UPDF AI Standard$15.001 Month
Show 7 more
  • UPDF Pro + AI Unlimited$18.991 Month
  • Quarterly Subscription$19.003 Months
  • Annual Subscription$49.991 Year
  • UPDF AI Standard$69.001 Year
  • UPDF AI Unlimited$79.001 Year
  • UPDF Pro + AI Standard$98.991 Year
  • UPDF Pro + AI Unlimited$118.991 Year
One-time3
  • Perpetual License$79.99
  • Perpetual License$128.99
  • UPDF & AI Add-on for iOS$148.99
5 purchases

PDFDarkMode

One-time5
  • Download PDF (up to 100 pages)$0.99
  • Dark Mode PDF Download2 variants$2.99
  • Download PDF (up to 500 pages)$4.99
Show 2 more
  • PDFDarkMode Pro$9.99
  • Download PDF (500+ pages)$9.99

Questions

Is UPDF free?
UPDF is free to download, with in-app purchases available.
Is PDFDarkMode free?
PDFDarkMode is free to download, with in-app purchases available.
Which has better reviews, UPDF or PDFDarkMode?
PDFDarkMode is rated higher. UPDF averages 4.6 out of 5 from 678 ratings, while PDFDarkMode averages 5.0 from 1 ratings.
Do UPDF or PDFDarkMode have ads?
Neither UPDF nor PDFDarkMode shows ads.
Which is updated more often, UPDF or PDFDarkMode?
UPDF ships an update fortnightly, and PDFDarkMode every 4 days. Most recently, UPDF was updated on September 23, 2026 and PDFDarkMode on September 10, 2026.

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