Effective 4 October 2026
Migi helps you pick up everyday Japanese on your iPhone and Apple Watch. It works without an account, and it’s designed to know as little about you as possible. This policy explains what the app does with information, and your choices.
Migi is made by Trisha Kuek, an individual developer based in Australia (“we”, “us”). For anything about privacy, email tk@hellomigi.com.
Your learning history (which Japanese items were shown, your quiz answers, your settings and the “My Life” topics you choose) is stored on your iPhone and Apple Watch so the app can decide what to show you next. It never leaves your devices except through iCloud sync (below), and it’s deleted when you delete the app or use Settings → Delete my data.
If you’re signed in to iCloud, the app saves your learning history to your private iCloud database so it can sync between your devices and be restored on a new phone. This data is stored by Apple under Apple’s Privacy Policy. We can’t access your private iCloud database. You can turn this off by turning off iCloud for the app in iOS Settings, and Delete my data removes it from iCloud too.
What’s sent: short, structured signals about how the app is used, for example “a recognition quiz on item word.oishii was answered correctly 1 to 3 days after it was last shown, on the home-screen widget”. Signals include item identifiers from our content, quiz results, which part of the app was used, rough time ranges, and whether you have Plus. Our analytics provider adds basic technical details: OS version, device model, language and region settings, accessibility settings (such as text size), and the hour and day of the week.
What’s never sent: your name, email, Apple Account, contacts, location, the text of any problem report, your “My Life” topics, or anything you type.
How it’s kept anonymous: we use TelemetryDeck, based in Germany. It works out a random per-install code from your device’s app-vendor identifier, scrambles it (hashes it with a secret value) on your device, and scrambles it again on its servers. This is designed so that neither we nor TelemetryDeck can turn that code back into your device or identity. We use it only to count things like “how many people used a widget this week”.
Why: to understand whether the app is helping people learn and to improve it, for example which quiz types work and whether people keep using the widgets.
Your choice:
How long: TelemetryDeck keeps the statistics for as long as our plan allows, and never more than 25 months.
Purchases of Migi Plus are handled entirely by Apple. We never see your payment details. The app checks with Apple, on your device, whether you have Plus. Apple gives us sales reports that don’t identify you.
If you’ve chosen to share analytics with app developers in iOS (Settings → Privacy & Security → Analytics & Improvements), Apple may share anonymous crash reports with us. We use them only to fix bugs.
| Who | What | Why |
|---|---|---|
| TelemetryDeck GmbH (Germany, EU hosting) | Anonymous usage statistics, if they’re on | Analytics, under a data processing agreement with us |
| Apple | Your iCloud data (stored in your account); purchases | Sync and payments, under Apple’s own privacy policy |
We don’t share information with anyone else, and we don’t sell or “share” personal information as those words are used in US state privacy laws.
Wherever you live, you can ask us what we hold about you, ask us to correct or delete it, object to processing, or withdraw consent, by emailing tk@hellomigi.com. Most of this you can do yourself in the app: switch statistics off, export your learning history, or delete your data. Because usage statistics are anonymous, we usually can’t find or delete the statistics that came from a particular person; switching them off stops anything new being sent.
If you’re unhappy with how we’ve handled your information, please contact us first. You can also complain to your privacy regulator: in Australia the Office of the Australian Information Commissioner, or elsewhere your local privacy or data protection authority.
Usage statistics are processed in the EU by TelemetryDeck. iCloud data is stored by Apple, which may store it in other countries under its own safeguards.
Migi is made for adults and teenagers learning Japanese. It isn’t directed at children under 16, and we don’t knowingly collect information from them.
If this policy changes, we’ll update the date at the top and describe important changes in the app’s release notes.