Privacy

Smooth Drive is a client-side PWA that reads accelerometer data on your device to give you feedback on smooth acceleration, braking, and cornering. Nothing is sent to a server. There is no backend.

All accelerometer readings, thresholds, and personal bests stay in your browser. The PWA caches itself for offline use via a service worker. Telemetry (page views, install events) goes to Lotl Observe.

What we collect

We collect and store the following:

Accelerometer data (on-device only): Accelerometer readings, thresholds, personal bests, and any calibration values stay in your browser. Nothing is sent to a server.Stored in your browser. Kept until you delete it. Legal basis: consent. Removable when you delete your account.
Usage telemetry: Page views, PWA install events, and crash reports sent to Lotl Observe. Does not include any accelerometer data.Stored on our server. Kept permanently. Legal basis: legitimate interests. Not individually deletable. Shared with: Lotl Observe.

Third parties

These external services receive some of your data:

DigitalOcean — static-site hosting (served under lotlsoft.com/smooth-drive/)

Your rights

You can export everything we hold about you, and delete your account at any time. Both options live in your account settings. Deletion is immediate and unrecoverable.

Last updated: 2026-07-30.