Book Thickness Calculator vs Kajabi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Book Thickness Calculator
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This app calculates the thickness of books in millimeters from the number of pages, paper weight (GSM) and cover thickness. The app also features a compensation function for books that have already been printed so that book thickness calculations of re-runs on identical paper stock, but different page counts, will be highly accurate.
Kajabi
Access your Kajabi courses and digital content from anywhere. Stream videos, listen to audio, and track your progress across all your enrolled courses. Stay updated with product news and engage with your Kajabi community.
- On-the-go course access
- Watch and listen to digital media
- Saves progress automatically
- Unified course login
- Cross-course content search
- Product update notifications
- Community exploration
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Enjoy on-the-go access to your library of courses from Kajabi creators, all in one convenient place. Watch and listen to digital media including course content and more. The app even saves your progress so that you can always pick up where you left off. Inside the Kajabi Mobile app, you can: - Access all your Kajabi courses without having to remember your password each time - Search for content through all of your courses at once - See updates for all of your products - Explore topics in your Kajabi community - Save your favorite posts so you can quickly find them later - And much more!
Screenshots
Verdict
The clearest difference is price: Kajabi at Free against Book Thickness Calculator's $0.99. Kajabi also leads on update cadence (fortnightly vs every 37 months) and chart position (#204 vs unranked). Book Thickness Calculator's advantage is iOS requirement (8.1 vs 16.6). On ads, in-app purchases and device support 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
Kajabi is free to download; Book Thickness Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Book Thickness Calculator ships an update every 37 months, Kajabi fortnightly. The most recent releases landed on May 16, 2026 and October 16, 2026 respectively.
| Parameter | Book Thickness Calculator | Kajabi |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 4.3 (7.4K ratings) — better |
| Positive reviews | — | 20.0% of reviews |
| Number of ratings | — | 7.4K — better |
| Update frequency | Every 37 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Best chart rank | — | #204 — better |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 2 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Manfred Breede | Kajabi, LLC |
Bugs and requests
Book Thickness Calculator
Not enough reviews yet to summarise bugs or requests.
Kajabi
Reported bugs
5 issues- Videos randomly stop playing or go black
- App crashes when switching between courses
- Issues with audio/video sync
- Inconsistent behavior when rotating device
- Trouble accessing content from new course purchases
Requested features
5 requests- Ability to save video progress and resume later
- Option to download videos for offline viewing
- Improved search and navigation functionality
- Support for picture-in-picture and background audio playback
- Dark mode option for better visibility
In-app purchases
Book Thickness Calculator
No in-app purchases
Kajabi
No in-app purchases
Questions
Is Book Thickness Calculator free?
Is Kajabi free?
Do Book Thickness Calculator or Kajabi have ads?
Which is updated more often, Book Thickness Calculator or Kajabi?
Other comparisons
