Fifol Co.,Ltd. ("we", "us") sets out below how information is handled in our app "Number Place by Fifol" (the "App").
Last updated: 2026-09-09
日本語版： プライバシーポリシー（日本語）
The App stores your solving history, puzzles in progress, and settings (background music, sound effects, duplicate-cell notification, and so on) only on your device. This data is never sent to our servers. Deleting the App from your device also deletes this data.
The App has no account or sign-in. We never ask you to enter your name, address, phone number, or email address (except as described under "Information we receive through the contact form"). The App contains no in-app purchases.
The App uses AdMob, provided by Google LLC, to display advertisements. To deliver and measure ads and to prevent fraud, AdMob may automatically collect information such as:
For the information collected, the purposes of use, and disclosure to third parties, please see:
https://policies.google.com/technologies/ads
You can turn off personalized advertising at any time in your device settings:
We do not collect or use advertising identifiers to track you across other companies' apps or websites. For this reason, the App does not show the iOS tracking permission prompt.
To help us improve the App, we use Google's Firebase Analytics (Google Analytics 4). The information collected automatically includes:
This information does not include your name, email address, or anything else that directly identifies you. Users are distinguished by the identifier that Firebase issues per app installation (the app instance ID). The App has advertising-ID collection for analytics purposes disabled.
The collected data is stored on Google services under our own account, where we aggregate and analyse it ourselves.
For the information collected, the purposes of use, and disclosure to third parties, please see the Google Privacy Policy:
https://policies.google.com/privacy
The App uses Google's Firebase Crashlytics to investigate problems. If the App shuts down unexpectedly, information such as your device model, OS version, app version, the state of the app at the time, and the installation identifier issued by Crashlytics is sent automatically. It does not include your name, email address, or anything else that directly identifies you.
The settings screen has a "Contact us" link that opens our contact form (a Google Form). The form asks for your message (required) and its category, and opens with your app version and OS already filled in. The device model is an optional field that you may fill in yourself.
Entering an email address is optional. If you provide one, we use it only to reply when a reply is needed.
We use the information you send through the form only to answer your enquiry and to improve the App. We never use it for advertising or analytics.
Apart from the above, we do not provide your information to third parties. The App relies on the following external services:
Because the App has no account, you can erase the data stored on your device at any time by deleting the App.
You can stop personalized advertising at any time using the device settings described under "Advertising".
Analytics, advertising, and crash information is handled in a form that does not directly identify you, so we may be unable to delete data for one specific user on request.
For requests to disclose, correct, or stop the use of personal data, and for any other question, please use the contact form below.
The App is not directed to children under 13.
If we change this policy, we will post the revised version on this page. Please check the "Last updated" date above.
Fifol Co.,Ltd. ( https://fifol.co.jp/ )
Contact: contact form (Google Forms)