Comparison

uLIBRARY vs Glassboxx

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

Head to head
About

uLIBRARY

Access your library's digital collection of eAudiobooks and eBooks on your smartphone or tablet. Browse, borrow, and enjoy content for free with your library membership. Features include personalized recommendations, offline listening and reading, and customizable reading and listening experiences.

Highlights
  • Browse and borrow digital library content
  • Search by genre and in-depth options
  • eAudio and eBook previews
  • Personalized recommendations
  • Offline listening and reading
  • Adjustable font sizes and colors
  • Automatic synchronization and bookmarking
Features
Read full description

With uLIBRARY you can take your library’s digital collection anywhere – browse, borrow and enjoy the best in eAudiobooks and eBook on your smartphone or tablet. Sign in securely with your library membership to access your library’s full collection of uLIBRARY’s digital content for free – it’s really that simple. Discover your new favourite story - Search for your favourite genre with ease with intuitive genre sliders and in-depth search options. - Try out the title before downloading with eAudio and eBook previews available. - Find recommended reads through our world first integrated book clubs, Talking Books and Bookworms as well as a ‘Next Read’ feature that populates based on the books you’ve previously enjoyed. - Effortlessly renew and return the titles to continue your uLIBRARY journey on your own terms. - Easily locate your previously downloaded titles to enjoy them all over again. Listen Your Own Way - With automatic synchronisation and bookmarking you’ll never lose your place, even if you change devices. - Slow down or speed up the audio as required with a wide-ranging speed function (0.25 to 3.0x) - Reach the conclusion at your own pace with a 30 second skip function or simply select the final chapter with our easy-to-use track selection. - With our integrated sleep function, every audiobook can become a bedtime story – no matter your age. - Listen anywhere, regardless of connectivity with offline listening. Read Your Own Way - Our built in eReader is the most accessible yet with adjustable font sizes, faces (including OpenDyslexic) as well as text and background colour so that everyone can explore the joy of reading. - No need to carry lots of books in your bag, with offline reading available. - Add bookmarks to revisit your favourite sections. Please note that your library’s uLIBRARY collection is curated by your library and not the uLIBRARY digital team.

About

Glassboxx

Access your purchased eBooks and audiobooks from affiliated stores in one secure app. No passwords needed, just your email and a verification code. Enjoy offline reading and listening with advanced playback and reading features.

Highlights
  • Unified eBook and audiobook library
  • No password login
  • Offline reading and listening
  • Auto-save reading/listening position
  • Customizable reader (font, background)
  • Audio playback controls (sleep timer, skip)
  • Full text search
Features
Read full description

Welcome to Glassboxx: hassle-free eBook and audiobook access, all in one place. Glassboxx cuts through all digital content ‘authentication’ issues, consolidating your eBook AND audiobook purchases made through affiliated stores, within an eminently user-friendly, secure environment. No password required – simply log in with the email address used to buy the book and enter the verification code sent to your email – and your content awaits in the ‘My Books’ area of the app, with formats clearly labelled. With the content in the cloud, downloading requires an initial internet connection, but once downloaded, your books can be enjoyed to your heart’s content in the remotest, furthest-flung corners of the earth, where internet penetration is a mere pipe-dream… THE AUDIO-PLAYER WILL: • Auto-save your current position in the book – so that you can pick up right where you left off, even if listening on different devices • Allow for skip forward/backward to recap where relevant • Offer sleep timer option • Play on lock-screen, enabling easy access to playback controls • Play in background whilst browsing other apps • Play immediately, and download in the background (provided internet access is available) THE EREADER ALLOWS FOR: • Page book-marking, opening the title at the right place when you pick up, even across multiple devices • Font-size and font face changes, as well as dyslexic-friendly font • Background colour changes • Full text search Welcome to the Glassboxx community!

Screenshots

uLIBRARY4 screens
Glassboxx4 screens

Verdict

The call

The clearest difference is rating: uLIBRARY at 5.0 against Glassboxx's 2.5. Glassboxx's advantage is ratings volume (55 vs 2) and review sentiment (27% vs 16%). 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

uLIBRARY holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Glassboxx has 55 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 16% of uLIBRARY's written reviews are positive against 27% of Glassboxx's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

uLIBRARY ships an update every 2 months, Glassboxx every 6 weeks. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

Scorecard3 real differences · 7 level
uLIBRARY versus Glassboxx: the parameters behind the verdict, then further details
ParameteruLIBRARYGlassboxx
PriceFreeFree
Rating5.0 (2 ratings) — better2.5 (55 ratings)
Positive reviews16.5% of reviews27.4% of reviews — better
Number of ratings255 — better
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size53 MB45 MB
Age rating12+12+
DeveloperUlverscroft Group LtdGlassboxx Limited

Customer experience

uLIBRARY

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews91 reviews
Positive16.5%
Neutral9.9%
Negative73.6%

Glassboxx

All ratings55 ratings
Positive38.2%
Neutral1.8%
Negative60.0%
Written reviews95 reviews
Positive27.4%
Neutral4.2%
Negative68.4%

Bugs and requests

uLIBRARY

Not enough reviews yet to summarise bugs or requests.

Glassboxx

Reported bugs

36 issues
  • App crashes on startup
  • App crashes when loading downloaded book
  • App crashes between chapters
  • App freezes
  • App won't open
Show 31 more
  • App shows blank pages
  • App does not rotate
  • App shuts itself off
  • App is slow
  • App has huge margins
  • App has no landscape mode
  • App has no annotation
  • App has no dictionary
  • App has unresponsive buttons
  • App freezes regularly
  • App cannot flick through chapters
  • App touch response is slow
  • App target areas are small
  • App opens to empty screen
  • App settings cannot be closed
  • App has only one font
  • App text is too faint
  • App has visibility/alignment/color jankiness
  • Playback speed resets to 1x when app is minimized
  • Verification codes not sent or expired
  • Books not downloading
  • Purchased books not displaying
  • Login issues
  • Table of contents unresponsive
  • Cannot zoom
  • Cannot navigate easily
  • Screen color resets
  • App not working on iPad
  • Download issues
  • App is unusable
  • Progress bar cannot disappear

Requested features

8 requests
  • Bookmark feature
  • See time remaining in entire audiobook
  • Pagination via cursor keys on iPad Magic Keyboard
  • Dark mode option
  • Advanced analytics dashboard
Show 3 more
  • More titles available
  • Ability to highlight and look up words
  • More standard format (e.g., PDF)

In-app purchases

None

uLIBRARY

No in-app purchases

None

Glassboxx

No in-app purchases

Questions

Is uLIBRARY free?
uLIBRARY is free to download, with no in-app purchases.
Is Glassboxx free?
Glassboxx is free to download, with no in-app purchases.
Which has better reviews, uLIBRARY or Glassboxx?
uLIBRARY is rated higher. uLIBRARY averages 5.0 out of 5 from 2 ratings, while Glassboxx averages 2.5 from 55 ratings.
Do uLIBRARY or Glassboxx have ads?
Neither uLIBRARY nor Glassboxx shows ads.
Which is updated more often, uLIBRARY or Glassboxx?
uLIBRARY ships an update every 2 months, and Glassboxx every 6 weeks. Most recently, uLIBRARY was updated on September 23, 2026 and Glassboxx on September 20, 2026.

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