Comparison

Aperio vs UPDF

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

Head to head
About

Aperio

This flashcard app allows users to create, import, and study custom card decks. It offers features like automatic narration, progress tracking, and the ability to reverse card sides. Predefined decks for languages are available, with custom creation accessible via a web page.

Highlights
  • Create and import custom flash card decks
  • Automatically narrated cards
  • Import decks via web page or CSV
  • Track study progress
  • Reverse card sides
  • Predefined language decks
Features
Read full description

Turn everyday study into lasting knowledge with Aperio—a flexible flashcard app for languages, school subjects, professional training, and more. Create your own decks directly in the app, import existing material, or build and share decks online—no registration required. Key features: - Automatic card narration - Create and manage custom flashcard decks - Import decks from CSV files - Open CSV files from Files, Mail, your computer, or the web - Create and import decks at https://aperio.oratu.eu - Track your learning progress - Reverse card fronts and backs for two-way practice - Start learning with included German, Spanish, Japanese, and Chinese decks Whether you are learning a new language, preparing for an exam, or mastering a new topic, Aperio helps you study at your own pace. For additional information and support, please visit the Aperio support website.

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

Screenshots

Aperio4 screens
UPDF4 screens

Verdict

The call

The clearest difference is review sentiment: UPDF at 84% against Aperio's 0%. UPDF also leads on price (Free vs $0.99) and update cadence (fortnightly vs every 19 months). Aperio's advantage is in-app purchases (none vs 13). On ads 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

UPDF is free to download; Aperio costs $0.99 up front. UPDF sells 13 in-app purchases, starting at $9.99 per month. Aperio asks for nothing beyond the download.

UpkeepUpdate frequency

Aperio ships an update every 19 months, UPDF fortnightly. The most recent releases landed on October 13, 2026 and October 27, 2026 respectively.

Scorecard7 real differences · 3 level
Aperio versus UPDF: the parameters behind the verdict, then further details
ParameterAperioUPDF
Price$0.99Free — better
Rating—4.6 (697 ratings) — better
Positive reviews0.0% of reviews84.3% of reviews — better
Number of ratings—697 — better
Update frequencyEvery 19 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.014.0 — better
Further details — not scored
Size6 MB195 MB
Age rating4+4+
DeveloperOratu, s.r.o.Superace Software Technology Co., Ltd.

Customer experience

Aperio

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

UPDF

All ratings678 ratings
Positive90.6%
Neutral1.9%
Negative7.5%
Written reviews937 reviews
Positive84.3%
Neutral5.3%
Negative10.4%

Bugs and requests

Aperio

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

Aperio

No 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

Questions

Is Aperio free?
Aperio costs $0.99, with no in-app purchases.
Is UPDF free?
UPDF is free to download, with in-app purchases available.
Do Aperio or UPDF have ads?
Neither Aperio nor UPDF shows ads.
Which is updated more often, Aperio or UPDF?
Aperio ships an update every 19 months, and UPDF fortnightly. Most recently, Aperio was updated on October 13, 2026 and UPDF on October 27, 2026.

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