Kaimono Privacy Policy
Effective date: September 4, 2026 (revised September 9, 2026: crash reporting added, English version added; September 12, 2026: stopped collecting email addresses and names)
Kaimono ("the app", published in Japan as かいものメモ) respects your privacy. This policy explains what information the app collects and how it is used.
1. The basics
Information is sent to a server only when you use one of these four features yourself.
| Feature | What is sent to the server |
|---|---|
| Sign in | Only an identifier issued by the sign-in service |
| Save lists to the cloud (while signed in; can be turned off in Settings) | The names of all your lists and the items in them |
| Sharing a list | The name of the shared list and the items in it |
| Notify near stores | The name, address, and coordinates of the stores you added |
As long as you do not sign in, the app sends none of your information anywhere.
2. Information we collect
2-1. Account information
Even if you use the sign-in feature, we do not collect your email address or your name (since 12 September 2026; email addresses collected before that date have been deleted).
All we receive from the sign-in service is an identifier used to recognise your account. The app never receives your password.
Your display name is something you set yourself in the app. It is shown to people you share a list with, so they can see who invited them. Until you set one it shows as "Unnamed user", and you can change it in the app at any time.
2-2. Contents of your lists
List names; item names, brands, sizes, quantities, units, and notes; whether an item has been bought; and when it was bought.
While you are signed in, the contents of your lists are stored on the server under your account, so that the same lists come back when you switch phones or sign in on another device. You can turn this off with "Save lists to the cloud" in Settings. When it is off, lists you have not shared stay on your device.
Only when you share a list can the people you share it with see its contents. While you are signed out, list contents are never sent to the server.
2-3. Store information
The name, address, coordinates (latitude and longitude), and reminder distance of the stores you add.
These are stored on the server only when you turn on "Notify near stores" or share a list.
2-4. Location
Your device's location is used only if you turn on "Notify near stores" (the feature that reminds you what to buy when you come near a store you added).
- Your current location is never sent to a server. It is used on your device only, to pick the nearest stores to watch.
- Reminders are composed and shown on your device. No external notification server is used.
- You can turn this feature off in Settings at any time, which stops the use of location.
When you set a store's position on the map, your current location is also used to decide where the map opens. It is not sent to a server in that case either.
2-5. What we do not collect
The app does not collect:
- Data from other apps on your device, such as contacts, photos, or calendars
- Identifiers for tracking your behavior
- Usage analytics (no analytics SDK is included)
Only when the app crashes or hits an error, a crash report (the error, the device model and OS version, and the app version) is sent to Sentry (see section 4) so the problem can be fixed. It never includes your display name, list contents, or location.
3. How the information is used
The information is used only to:
- Provide the app's features: creating, showing, and sharing lists
- Show the people you share with who the list came from
- Estimate from purchase history when you might need something again, and suggest it
- Notify you when you come near a store you added
It is never used for any other purpose without your consent.
4. Sharing with third parties
We never sell your information or provide it to third parties for advertising.
The app relies on the following services to work.
| Provider | Purpose | Information sent |
|---|---|---|
| Amazon Web Services (AWS) | Storing and processing data | The items in section 2 that are stored on the server |
| Google LLC | Sign in | An identifier used to recognise your account (received by the app) |
| Apple Inc. | Sign in (iOS) | Same as above |
| Apple Inc. | Maps and address search (iOS) | The map area being shown and the address text you search |
| Google LLC | Maps and address search (Android) | Same as above |
| Functional Software, Inc. (Sentry) | Crash reporting (United States) | The error, device model and OS version, app version |
Data on the server is stored in the AWS Tokyo region (ap-northeast-1).
Address search uses the map service built into your device, so the address text you type is sent to the map provider above.
5. Information kept on your device
The app keeps your lists, stores, and purchase history in a database on your device. If you are signed in, an authentication token that keeps you signed in is kept in the device's secure storage (iOS Keychain or Android Keystore).
Uninstalling the app deletes this information from your device.
6. Retention and deletion
- Information on the server is kept as long as your account exists.
- You can delete your account at any time from the Settings screen in the app. This deletes your account information, stores, purchase history, and any lists that only you belong to, from both the server and your device.
- Lists shared with other people are kept for them. You are removed from those lists and can no longer access them.
- Invite codes expire and are deleted automatically 7 days after they are issued.
7. Children
The app does not knowingly collect personal information from children under 13.
8. Security
- All communication between your device and the server is encrypted (HTTPS).
- Data on the server is stored encrypted.
- Each user can access only the lists they belong to and the stores they added.
9. Changes to this policy
This policy may be updated when laws change or features are added. Significant changes will be announced in the app or in the store listing.
The app currently shows no ads. If ads are introduced in the future, this policy will be updated beforehand to describe what is collected.
10. Contact
For questions about this policy or how your information is handled:
- Publisher: Masaru Morikawa
- Email: contact@worldfoodkitchen.com