BibliU vs Sentry
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BibliU
Access your digital textbooks and course reading lists from any device. Search your entire library instantly to find key information and make annotations for effective studying.
- Access digital textbooks
- Massive library of course readings
- Fully searchable library
- Annotations and highlights
- Optimized for mobile reading
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Companion app for your BibliU account. Access all your textbooks anytime, anywhere from the comfort of your favourite device. Massive library Our growing library gives you unlimited access to all your courses' reading lists. Find all your reading material in one, easy to use interface. Fully searchable Search your entire library at once. Find the most relevant paragraphs or images to allow you to get your study done - fast. Made for mobile Our app ensures books are as easy to read on a small screen as they are on your desktop. With added annotations and highlights, you can get your study done anywhere.
Sentry
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An application helping to book and access study spaces, rooms, resources eg computers consistent with academia facilities. If configured, it allows users to present their ID card barcode on their phone.
Screenshots
Verdict
The clearest difference is update cadence: BibliU at monthly against Sentry's every 19 months. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
BibliU ships an update monthly, Sentry every 19 months. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.
| Parameter | BibliU | Sentry |
|---|---|---|
| Price | Free | Free |
| Rating | 2.7 (15 ratings) — better | — |
| Positive reviews | 11.8% of reviews | — |
| Number of ratings | 15 — better | — |
| Update frequency | Monthly — better | Every 19 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 58 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | BibliU Ltd. | S. B. ELECTRONIC SYSTEMS LIMITED |
Bugs and requests
BibliU
Reported bugs
5 issues- Login issues and frequent log-outs
- Inconsistent page loading and scrolling
- Incompatibility with certain devices and operating systems
- Disappearing highlights and annotations
- Unreliable download and offline access
Requested features
5 requests- Dark mode option
- Advanced annotation and highlighting tools
- Improved text-to-speech capabilities
- Seamless offline access and syncing
- Better organization and navigation
Sentry
Not enough reviews yet to summarise bugs or requests.
In-app purchases
BibliU
No in-app purchases
Sentry
No in-app purchases
