Privacy
Manu is a language companion. You talk to it, it remembers what you were reaching for, and it brings those words back. This page says what that means for your data. It is short because there is not much to say.
No account
Manu does not ask for an email address, a password or a phone number. There is no sign-up. Your phone is identified to our servers by a random identifier it generates for itself, which is used only to keep daily usage within its limits. It is not linked to you, and we cannot use it to find out who you are.
What stays on your phone
Your conversations, the words you are learning, your review history and what the companion remembers about you are stored on your device. We do not keep copies of them.
Your conversations are kept for 90 days. After that, the messages, the transcripts of spoken conversations and their summaries are deleted from your phone automatically. What the companion learned from them stays: what it remembers about you, your words and your progress.
What is sent, and to whom
To reply to you, Manu sends the conversation and a short summary of what it remembers to OpenAI, which writes the response. During a spoken conversation your microphone audio goes to OpenAI directly from your phone. OpenAI processes this on our behalf and does not use it to train its models; it may keep it for up to 30 days to detect abuse, then deletes it.
Before your first conversation, Manu asks for your agreement to this, on the microphone screen. Without it, it cannot answer you.
Our own servers are hosted in the European Union and store only what is needed to keep the daily limit: which device asked, when, and for how long. No conversation, no audio, no text.
Manu does not read your calendar, reminders, contacts, music or health data.
Subscription
Subscriptions are sold and billed by Apple, and we never see your payment details. To check whether a subscription is active, the app uses RevenueCat, which receives an anonymous identifier generated by the app and Apple’s purchase records: never your conversations or anything you said.
No advertising, no tracking
We do not sell or share your data. There are no advertising identifiers, no analytics or advertising SDKs, no trackers and no data brokers. Nothing you say is used for marketing.
Counting how the app is used
We count how often features are used, in numbers only, so we can tell what is working. These counters never contain anything you wrote or said. You can switch them off in the app, under Profile, and the app behaves exactly the same.
How long we keep it
- The record of which device asked for a conversation, and when, is deleted after 7 days.
- The daily call counters are deleted after 7 days.
- The usage counters described above are deleted after 13 months.
One exception, and it is there to keep a promise rather than break one: the single record that says a device has already used its free introductory conversation is kept for as long as the app runs. Without it, that first conversation would be free again every week. It holds a device identifier and a date, and nothing else.
Deleting your data
Everything Manu holds about you is on your phone, so deleting the app deletes it. You can also clear what the companion remembers, and your conversation history, from the Profile screen at any time. Deleting the app does not cancel a subscription: that is managed in your Apple account (Settings, your name, Subscriptions).
Children
Manu is not intended for children under 13.
Your rights
If you are in the European Union or the United Kingdom, you have the right to access, correct, export or delete your personal data, and to object to its processing. Because nearly everything is stored on your own device, most of this you can do yourself in the app. For anything else, write to us.
You also have the right to complain to a data protection authority. In France that is the CNIL; elsewhere in the EU it is your own country’s authority, and in the United Kingdom it is the ICO.
Changes
If this policy changes in a way that affects you, we will say so in the app before the change takes effect.
Contact
Manu is published by Lucas Higashiuchi, the controller of your data. Contact: ruka.agency@gmail.com