Comparison

iCalibre vs Lios Calibre Viewer

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

Head to head
About

iCalibre

Access your Calibre ebook library from any device via iCloud. Search, open, and read books directly within the app, with features like stored queries and cover image viewing. Keep your entire library synchronized across your iPhone, iPad, and PC.

Highlights
  • iCloud library synchronization
  • Open books directly in reader
  • Stored queries and autosuggest search
  • View cover images and descriptions
  • Search Google for book information
  • Mark books for easy searching
Features
Read full description

Keep your Calibre libraries on the iCloud and open them on your iPhone iPad and Mac or Windows pc. Open your library anywhere on the world, search and open books. As many libraries as you like. Open the books directly in the reader, no need for iTunes. Stored querys. Create your own (complex) query.  Autosuggest for the search.  View the cover image and read the description.  Search google for more information without leaving the app.  Mark books for easy search in Calibre. Everything is in the cloud, so all devices have the same information. And everything is availaballe in the whole world.

About

Lios Calibre Viewer

Access and read your entire book collection from your computer on your iPad or iPhone. Organize books by category and download them for offline reading, saving device space. Browse your library quickly with locally stored book names and cover art.

Highlights
  • Stream Calibre library
  • Download books for offline reading
  • Organize books by category
  • Quick library browsing
  • Save device space
Features
Read full description

View your entire calibre library streamed from your host computer to your iPad or iPhone. Download the books to the device and read the books anywhere. Organize your books by category or by the books you choose to download. Your entire library of book names and cover art are stored locally for quick browsing. The books are only downloaded on device when you choose to download them, saving space on your phone or tablet.

Screenshots

iCalibre4 screens
Lios Calibre Viewer4 screens

Verdict

The call

The clearest difference is review sentiment: Lios Calibre Viewer at 100% against iCalibre's 25%. Lios Calibre Viewer also leads on rating (4.3 vs 1.0) and update cadence (every 5 days vs every 50 months). iCalibre's advantage is iOS requirement (12.4 vs 16.0). On ratings volume, 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

iCalibre costs $4.99 and Lios Calibre Viewer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Lios Calibre Viewer holds the better App Store score, 4.3 against 1.0. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews point the same way: 25% of iCalibre's written reviews are positive against 100% of Lios Calibre Viewer's.

UpkeepUpdate frequency

iCalibre ships an update every 50 months, Lios Calibre Viewer every 5 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
iCalibre versus Lios Calibre Viewer: the parameters behind the verdict, then further details
ParameteriCalibreLios Calibre Viewer
Price$4.99$2.99 — better
Rating1.0 (3 ratings)4.3 (3 ratings) — better
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings33
Update frequencyEvery 50 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.4 — better16.0
Further details — not scored
Size97 MB11 MB
Age rating4+4+
DeveloperHarmen ReichertAntonio Torres

Customer experience

iCalibre

All ratings3 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

Lios Calibre Viewer

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iCalibre

No in-app purchases

None

Lios Calibre Viewer

No in-app purchases

Questions

Is iCalibre free?
iCalibre costs $4.99, with no in-app purchases.
Is Lios Calibre Viewer free?
Lios Calibre Viewer costs $2.99, with no in-app purchases.
Which has better reviews, iCalibre or Lios Calibre Viewer?
Lios Calibre Viewer is rated higher. iCalibre averages 1.0 out of 5 from 3 ratings, while Lios Calibre Viewer averages 4.3 from 3 ratings.
Do iCalibre or Lios Calibre Viewer have ads?
Neither iCalibre nor Lios Calibre Viewer shows ads.
Which is updated more often, iCalibre or Lios Calibre Viewer?
iCalibre ships an update every 50 months, and Lios Calibre Viewer every 5 days. Most recently, iCalibre was updated on November 3, 2026 and Lios Calibre Viewer on November 5, 2026.

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