A private journal. A place for your words.
Where your writing actually goes
Every row below is a line in the privacy policy, not a promise made on a marketing page. The policy is where the version, the effective date and the full detail live.
| Question | Answer |
|---|---|
| Where entries are stored | Your entries are stored in the central cloud database as part of your account. |
| How access is protected | Connections are encrypted in transit, and database access is restricted to your own data. |
| Model training | Journals and chats are not used to train third-party AI models. Content reaches an AI provider only as the prompt for the reply you asked for, under contracts that forbid training on it. |
| Who else touches it | Hosting, delivery and payment providers handle their own slice and do not read entries. The list of categories is in the policy. |
| Voice | Audio goes to the transcription provider, comes back as text, and is discarded. The transcript stays with the entry it belongs to. |
| Getting it out | Account → Your data → Download gives you a machine-readable copy: profile, journals, chats, Credit ledger, voice usage, settings. |
| Getting rid of it | Account → Your data → Delete account. Thirty-day grace window — sign back in within it to cancel. After that every journal, chat, Credit and setting is wiped, and backups catch up inside the same rolling thirty days. |
| Advertising | No ad networks, no location, no contacts, no biometrics, no device sensors. |
Three things Rainku deliberately does not have:
- Streak counters
- Daily push reminders
- A feed to share into
Rainku.
A private journal.
Saved in your account.
Your words, across your devices.
A place for your own words.
Sign in to write in your browser. Your entries are saved to your account and synced across your devices. You can export your data or request account deletion.
You only need to talk.
Turn on the rain and start talking. The AI listens on the other side and asks a few follow-ups that keep up with your train of thought. After the conversation, the day's entry appears on its own.
Private by default.
Every conversation runs over an encrypted channel. Journals and chats are not used to train third-party AI models. Export everything in one step, or delete the account at the root. The item-by-item list is in the privacy policy.
Your rain.
Amount. Speed. Fog. Refraction. Four sliders that tune the rain into the one you want.
Your trail.
Every entry filed by date. Flip back through the calendar to a day a few weeks ago. Turn one into a poster if you want to share it; if not, just keep it.
Read next
Rainku as a daily diary app — plans, devices, and what a normal day looks like.
What an AI journal app is — the category, and the two shapes it comes in.
Writing through a breakup — seven prompts, each one opening the composer with that question in it.
Open Rainku.
A private journal, saved to your account.
Sign in and write