Before choosing an app
- Can you register without email, and what recovery tradeoff follows?
- Can notification previews and device access be controlled?
- Are sync and backup destinations identified?
- Can you delete and export records?
- What data is sent outside the service when AI is used?
- Does analytics exclude Diary content?
PI-Thenics Diary today
Email-free registration is available, but an account without email cannot use password recovery. Entries and attachments are stored in the service database. If you choose AI chat, analysis, or document generation, the Diary data needed for that action is sent to the OpenAI API. Analytics events exclude entry text, names, attachment filenames, and AI input or output.
Device-side steps
- Use a strong device passcode
- Hide browser and email notification previews
- Do not keep sessions on a shared device
- Set a safe quick-exit destination
- Delete obsolete entries and downloaded files
Primary sources
Related guides
Choose your next step
You can start a private Diary, keep reading, or stop here. If you later want professional navigation, review the guide before choosing whether to request an introduction.
Start a private Diary · Explore a synthetic sample · Read the PI guide