OU Study vs Calibre Project
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OU Study
Enhance your mobile learning experience with access to module materials and a study planner. Download content for offline access, track key dates, and stay updated on forum messages. Designed for registered Open University students.
- Access module materials
- Study planner
- Offline downloads
- Track key dates
- Forum message notifications
- Sync with module website
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Learn anywhere, anytime with the OU Study app. This app enhances your learning experience on mobile devices as an Open University student. So, you can access learning materials to study wherever and whenever you like. Benefits of using the OU Study app include: - Easy access to your module materials and study planner. - Download learning materials to study offline. - Keep track of key dates and progress. - Never miss a forum message. The OU Study app is for Open University students who are registered on a course or qualification. Sign in using your OU username and password (the same one you use to sign in to the website). Free or paid-for learning content from partners such as OpenLearn or FutureLearn is not available in the app. If you're experiencing any unexplained issues, check our Troubleshooting guide: https://learn1.open.ac.uk/course/view.php?id=100187&cmid=22860 For any urgent and access queries, contact the computing helpdesk at ou-scdhd@open.ac.uk. USEFUL TIPS - There is a lot of information on your module website. So, it will take a few minutes for the app to load the first time you use it. Use a Wi-Fi connection for your first use. As the app caches some information, it will get quicker. - Download learning materials individually and batch download by week using Course downloads. Return to the Planner to access downloaded materials. If you need to free up space, delete them from the Course downloads screen. - The Planner within the app remembers the week you were studying last time. So, you can continue studying easily. You can always navigate to the current week to keep track of the key dates. - The OU Study app and your module website are synced. As you tick completed resources or save an answer, both the module website and the app are updated. - The majority of your module activities will be available in the app. Yet, for some, you will be directed to your browser to use the mobile version of the module website. - We try to prioritise requirements based on user feedback. If you have any feedback or suggestions, use the Feedback function within the app or leave a review on the App Store. We regret that we can’t always reply to these directly, but we’re keen to hear your thoughts. FOR MORE INFORMATION - Support guide www.open.ac.uk/oustudyapp - Accessibility Statement https://www.open.ac.uk/apps/ou-study/accessibility-ios Image credits: - Image 1 (iPhone): Adapted from Photo by Alexa Suter on Unsplash. - Image 1 (iPad): Adapted from Photo by Totte Annerbrink on Unsplash.
Calibre Project
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Learn how mechanical watches work with the official Calibre Project App. - You can easily access your courses on your mobile at your own pace. - Watch your educational videoes, read content and test your knowledge when and where you want to. - Switch between desktop to mobile without losing your course program.
Screenshots
Verdict
The clearest difference is in-app purchases: OU Study at none against Calibre Project's 1. OU Study also leads on iOS requirement (13.0 vs 15.2). Calibre Project's advantage is update cadence (every 6 weeks vs every 9 months). On price, ads 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. Calibre Project sells 1 one-off in-app purchase. OU Study asks for nothing beyond the download.
OU Study ships an update every 9 months, Calibre Project every 6 weeks. The most recent releases landed on October 13, 2026 and October 9, 2026 respectively.
| Parameter | OU Study | Calibre Project |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) — better | — |
| Positive reviews | 14.3% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 9 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 52 MB | 102 MB |
| Age rating | 4+ | 4+ |
| Developer | The Open University | Fraction AS |
Bugs and requests
OU Study
Reported bugs
38 issues- Cannot log in on original account
- Cannot sign up with new account
- Password cannot be based on a dictionary word
- App sends to mobile browser
- Videos just won't play
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- Forum part doesn't work properly
- App doesn't load or is incredibly slow
- Home screen doesn't load
- Videos don't always load
- Interactive activities don't work
- Quizzes don't work half the time
- App crashes and restarts
- Pages refuse to load
- App doesn't work properly after last update
- Home page doesn't load properly
- Module page doesn't load properly
- Assessment tab stays up under forum tab
- Study materials not loading
- Module page comes up blank
- Nothing is fully loading
- Cannot see written values
- Constant pulsing/buffering indications
- Cannot find enrolled courses
- App keeps logging you out
- Text size option doesn't change course material text
- iOS built-in text resize not supported
- Notes made in text boxes not saved
- App notifications are broken
- Planner is very buggy
- Login screen freezes
- Forgotten password function doesn't work
- 403 forbidden by netscaler
- Login page uses webpage instead of native
- App icon doesn't appear on screen
- Cannot type in comment boxes at night (text shows up white)
- Authorisation denied on login screen
- App is slow, freezes
- Doesn't bring user to current study week
Requested features
10 requests- Add bookmark feature
- Improve accessibility for visually impaired
- Implement text zooming and font size options
- Add student home access
- Improve mobile layout optimization
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- Create internal bookmarking
- Add notifications for falling behind in planner
- Make more modules available
- Develop and add more courses
- Fix text visibility at night
Calibre Project
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OU Study
No in-app purchases
Calibre Project
- Calibre Learning Kit$299.99
Questions
Is OU Study free?
Is Calibre Project free?
Do OU Study or Calibre Project have ads?
Which is updated more often, OU Study or Calibre Project?
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