No account. No cloud.
VialBook is built so there is nothing to leak. Your log stays on your phone, and here is exactly where each piece lives.
No account
There is nothing to sign up for. No email, no password, no profile.
No cloud
VialBook has no server for your health data. Your log lives on your phone.
No tracking
No analytics and no crash-reporting code in the app, and no ad identifiers.
Hide names
Swap the medicine name for a neutral label in the app, on reminders, and on the Lock Screen.
Backup you keep
Save a file wherever you like. Restore only adds what is missing and never overwrites.
Delete any time
In the app, tap You, then Delete all data. It is final: there is no hidden copy to recover.
Every kind of data.
| Data | Where it lives | Leaves the phone? |
|---|---|---|
| Medicines, doses, schedules, weights, sites, notes | On your phone only | Never sent by VialBook |
| Reminders | Scheduled on your phone as local notifications | Never sent |
| Backup file and CSV export | A file you create and keep | Only if you choose to share it |
| Visit summary PDF | Made on your phone from your own logs | Only if you share it |
| Subscription status | Apple (App Store on your device) | Handled by Apple. VialBook receives no payment details |
| Free trial start date | Your device Keychain, so a reinstall does not restart it | Never sent |
| Vial math calculator on this website | Runs in your browser | Nothing you type is sent or stored |
| Support email | Your email app and our support inbox | Only if you email us |
If you use iCloud or iPhone backups, Apple may include the app's data in them under your own Apple settings. That is between you and Apple. This website counts page views with Vercel Analytics, which uses no cookies and does not identify you.