Comparison

UD Browser vs JOS

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

Head to head
About

UD Browser

This app enhances reading accessibility with universal design principles. It supports various e-book formats, offers OCR for document digitization, and includes text-to-speech and zoom features for comfortable reading by anyone.

Highlights
  • Universal design for accessibility
  • Supports EPUB, DAISY, PDF, HTML formats
  • OCR for digitizing paper documents
  • Text-to-speech functionality
  • Keyboard navigation and zoom display
  • Reflowable and fixed layouts
Read full description

UD Browser is an e-book reading application developed based on universal design principles, with a strong focus on enhancing reading accessibility. This application allows users to switch between fixed layouts (PDF) and reflow layouts (HTML), while supporting a wide range of e-book formats, including EPUB and DAISY. Designed for comfortable use by anyone, it features an OCR function, zoom display, keyboard navigation, dictionary search, and text-to-speech capabilities. The intuitive, easy-to-navigate menus and text selection functions ensure that individuals with low vision can confidently use the app. Additionally, the OCR and file conversion functions enable quick digitization of paper documents. Ideal for use in educational settings, workplaces, and at home, this app is a powerful tool for supporting learning and information sharing. This application was developed under contract with the Yasushi Nakano Laboratory at Keio University and was completed with research funding from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) and the Japan Society for the Promotion of Science (JSPS) (Grant Numbers: 16H02072, 19H00623, 22H00081). Application Features - Easy-to-use interface with large, readable menus - Dictionary search and text-to-speech functionality - Page jump feature for quick navigation - Support for keyboard operations - Reflow display that maintains readability when text is enlarged - Conversion functionality for text files, Word files, and PDF files - OCR functionality for digitizing paper documents - Compatibility with EPUB and DAISY file formats

About

JOS

Features
Read full description

JOS app allows you to overview the congress program and create your own personal itinerary. Download the mobile app in order to: + View the detailed congress program, complete with session descriptions and schedules. + Browse or search the full schedule of programs by day, type or title. + See the list of speakers and find the sessions they will present. + Plan your own personal program and organize your schedule during congress. + Receive the very latest congress updates.

Screenshots

UD Browser4 screens
JOS4 screens

Verdict

The call

The clearest difference is update cadence: UD Browser at every 6 days against JOS's every 7 months. UD Browser also leads on device support (4 vs 2). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

UD Browser ships an update every 6 days, JOS every 7 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 8 level
UD Browser versus JOS: the parameters behind the verdict, then further details
ParameterUD BrowserJOS
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 6 days — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size157 MB8 MB
Age rating4+4+
DeveloperClimb AppJapanese Ophthalmological Society

In-app purchases

None

UD Browser

No in-app purchases

None

JOS

No in-app purchases

Questions

Is UD Browser free?
UD Browser is free to download, with no in-app purchases.
Is JOS free?
JOS is free to download, with no in-app purchases.
Do UD Browser or JOS have ads?
Neither UD Browser nor JOS shows ads.
Which is updated more often, UD Browser or JOS?
UD Browser ships an update every 6 days, and JOS every 7 months. Most recently, UD Browser was updated on October 24, 2026 and JOS on October 27, 2026.

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