Voxsmile
Privacy Policy
In short: no account is needed. Your voice is analysed on your device. Your progress and recordings are backed up to our server encrypted on your device first; without sign-in we cannot read or listen to them. Signing in with Apple or Google is optional. You can turn the backup off at any time. We do not sell data, show ads or use third-party tracking.
This policy covers the Voxsmile app for iPhone (“Voxsmile”). “We” means the developer of Voxsmile.
Without sign-in
Signing in is optional. Voxsmile does not ask for your name, email, phone number or Apple ID. On first launch your device creates a random sync key. Our server receives only a storage number and an access token derived from that key, and keeps only a hash of the token. On iPhone the key is kept in your iCloud Keychain, which is Apple's storage, not ours.
Optional sign-in with Apple or Google
You can sign in with Apple or Google in Settings, so your progress can be restored on a new device. The provider gives the app an ID token; our server checks its signature and keeps only a SHA-256 hash of “provider:user ID” and your sync key, encrypted with a server key (AES-256-GCM). Your email and name are not stored on the server; the email is shown only on your device. Because the server keeps the key for an account, it could technically decrypt that account's copy, so it is not strictly end-to-end encrypted. Copies without sign-in stay as described below. Apple and Google take part only at the moment you sign in.
Microphone and voice
Voxsmile uses the microphone during tests and exercises. The sound is analysed on your device to measure things like pitch, loudness and pace. No audio is sent anywhere for analysis.
Data on your device
- Settings: language, goal, minutes per day, reminder time, voice type and, if you enter it, a name.
- Answers to the voice-health questions at the start.
- Program progress, exercise results, voice measurements (“voice passports”) and a log of sessions.
- Voice recordings made in the app.
Encrypted backup on our server
To keep your progress safe, the app stores a copy of the data above on our server, app.voxsmile.com. Before it leaves your device, the copy is encrypted with AES-256-GCM using your sync key. The server stores only this encrypted copy: we cannot read it or listen to the recordings.
The server is our own and is located in Germany. The copy is not shared with anyone. IP addresses are not written to logs; they are held in memory for about a minute only to limit request rates.
Error reports and feedback
If something goes wrong, the app sends an error report to our own error collector, located in the Netherlands. It contains the error text and stack trace, app version, platform and system version, the screen address without parameters, and the last ~20 taps in the form “tapped X” (text you type is not recorded).
If you send feedback from the app, we receive the text you write and a contact if you add one. Error reports and feedback never include your progress, recordings or sync key.
What we do not do
- We do not sell or share your data with advertisers or data brokers.
- We do not show ads and do not use third-party analytics or tracking.
- We do not use your data to train AI models.
Why we use the data
Only to run Voxsmile: to build and adapt your program, show your progress, let you restore it, and fix errors.
How long we keep it
- A server copy that has not been opened or changed for 12 months is deleted automatically.
- Error reports and feedback are kept for 90 days.
- An account without a server copy that nobody has signed in to for 12 months is deleted automatically.
Deleting your data
- In Settings, turn off “Server copy”: it is deleted from the server.
- “Start from zero” deletes the data on your device and the server copy.
- You can save a backup to a file at any time.
- “Sign out” unlinks this device (it gets a new anonymous key).
- “Delete account” deletes the account and its server copy.
Without sign-in, there is no account and the copy is encrypted, so we cannot tell which copy is yours; these controls in the app are the way to manage it. You can still write to us with any request. Depending on where you live, you may have rights under laws such as the GDPR; we will honour them as far as we can identify your data.
Children
Voxsmile is not intended for children under 13, and we do not knowingly collect their data.
Changes
If this policy changes, we will update this page and the date above. Important changes will also be shown in the app.
Contact
Questions or requests: support@voxsmile.com