Privacy.

Voice notes. When you record a voice note we store the audio so you can play it back later. Voice notes are private to you and never shown to anyone else.

Sign-in details. Kaizen uses Sign in with Apple and Google Sign-In. We receive your name and email address from those providers — nothing else. We use them to create your account and to send essential service email.

Time zone. Kaizen reads your device’s time zone so days, deadlines, and habit streaks line up with where you actually are. We do not request location access, and we do not store your location.

That is the complete list. We do not run analytics on your content, we do not sell or share data with advertisers, and we do not build profiles of you.

We send your voice notes to OpenAI for transcription. OpenAI returns the text and we attach it to the matching entry. Voice notes are only sent to OpenAI for this purpose — no other third party sees them.

Under OpenAI’s API terms, the audio we send is not used to train their models.

We use Google in two places.

Signing in. If you sign in with Google, we receive your name and email address. We use them to create your Kaizen account and to send you essential service email. That’s the whole of it.

Calendar sync. If you turn on Google Calendar sync, Kaizen asks for the calendar.events permission — Google describes it as “view and edit events on all of your calendars.” We use it for one thing: writing the items you schedule in Kaizen — habits, tasks, and time blocks — into the Google Calendar you choose. Kaizen does not read your calendar. We do not look at events you create elsewhere, and we do not use anything from Google Calendar for advertising, profiling, or training AI or machine-learning models.

Who sees it. Nobody outside Kaizen. Your Google name, email, and calendar data are stored on our own servers (run by Supabase, our database provider) and used only for the two features above. We do not sell, rent, or pass Google user data to any other company, and we do not send it to OpenAI — only your voice notes are sent there, as described above. The only time a person at Kaizen would look at this data is to answer a support request you have raised, to comply with the law, or to investigate suspected abuse of the service.

Limited Use. Kaizen’s use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements.

Turning it off. You can revoke Kaizen’s access at any time from your Google Account permissions page, or by deleting your Kaizen account. When you delete your account, everything we received from Google is erased with the rest of it.

Your account, voice notes, and entries are stored on Kaizen’s servers, encrypted in transit (TLS) and at rest.

You can delete any voice note or entry from inside the app at any time. To remove your entire account and everything in it, email info@kaizen-app.co.uk from the address tied to your account. We will erase it within 30 days.

Kaizen is not directed to children under 13, and we do not knowingly collect data from anyone under that age.

If we make material changes to this policy, we’ll update the date at the top of the page and, where appropriate, notify you in the app.

Questions? Email info@kaizen-app.co.uk. See also our terms of service.