KeyHub vs Correctbook App
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
KeyHub
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Do you use KeyHub? With this app you'll never have to manually enter a 2FA code again. Simply connect the app using the regular 2FA-feature in your KeyHub-account and enable push-messages. When KeyHub requires you to enter your 2-factor-authentication, a push message will notify you. You can directly use this push-message to authenticate (after passing the touch-id or passcode check). If you weren't the person to initialise the authentication, the push-message can be used to immediately lock your account to prevent others to access it. That's all it takes!
Correctbook App
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Correctbook; the erasable notebook that will last forever, here but also in developing areas. With the purchase of each Correctbook, we provide children in developing areas with the same erasable writing material. Available in all kinds of sizes: from pocket to A4. With the Correctbook Scan App you can digitize, organise and share your notes. Write endlessly in your Correctbook and erase the things you don't need anymore. Store important notes? Scan and save them in the notebook app. You can even create useful folders to keep a good overview. Share the scans with Dropbox or WhatsApp for example. The Correctbook App gives you a modern writing experience. The ideal combination of analog writing and digital organising. The functionalities of the app are the following: Scanner: - Automatic document detection Editor: - Manually cropping - Different filters - Rotate scans - Give names to scans - Place scan in a specific project Gallery: - Organise and create different projects - Share files through WhatsApp, Gmail, Outlook and many more - Move files to other folders - Summary of all scans - Delete files or projects
Screenshots
Verdict
The clearest difference is update cadence: KeyHub at every 3 months against Correctbook App's every 9 months. KeyHub also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KeyHub ships an update every 3 months, Correctbook App every 9 months. The most recent releases landed on September 14, 2026 and September 11, 2026 respectively.
| Parameter | KeyHub | Correctbook App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months โ better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 13.0 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 7 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Topicus Onderwijs B.V. | Correctbook |
In-app purchases
KeyHub
No in-app purchases
Correctbook App
No in-app purchases








