Math Citizen privacy policy
This policy covers Math Citizen for iPhone and iPad, published by Company31 Pty Ltd. The company31.com website is covered separately by the website privacy policy.
Version 1.1 · 24 September 2026
The short version
Math Citizen collects nothing. It has no account, no sign-in, no Game Center, no analytics, no advertising, no tracking and no Company31 server, and it makes no network requests at all. Nothing you do in the app is sent to us or to anyone else, and on the App Store its privacy label reads Data Not Collected.
What the app does keep — the name you give it, your age, your progress, your badges and your settings — stays on your own iPhone or iPad, in the app’s own storage. The rest of this page says exactly what that is, what it is used for, and how to delete it.
What Math Citizen stores, and where
Everything below lives only on the device you play on, inside Math Citizen’s own container, which other apps cannot read. Company31 receives none of it.
| What | What it is for |
|---|---|
| Your name | A first name or nickname you type once, so the app can greet you. Any name works; it is editable in Settings and never leaves the device. |
| Your age | Asked once, and editable in Settings. It is used only to suggest a starting level and to choose story themes that suit you. It is a number of years: the app does not ask for a birthdate. |
| Progress | The starting level you chose, your level and skill rating for each kind of puzzle, your XP and rank, your daily streak, personal bests, and the history behind the progress chart and the accuracy figures. It is what lets the next puzzle fit you. |
| Badges | Which of the badges you have earned. |
| Settings | Your choices in the app’s Settings screen. |
What leaves your device
Nothing. Math Citizen makes no network requests of any kind: not to Company31, not to an analytics or advertising service, not to Game Center, and not to an AI provider. It contains no third-party code that phones home and no advertising identifier, and it does not track you across other apps or websites, as Apple defines tracking. It works the same with the device in flight mode.
Apple Intelligence runs on your device
On a device that supports it, Math Citizen uses Apple Intelligence, through Apple’s on-device Foundation Models framework, to turn a puzzle’s numbers into a story problem and to write a hint when you are stuck. That model runs on your iPhone or iPad. What it is given — the puzzle’s numbers and a theme chosen for your age — and what it writes stay on the device. The numbers and the correct answer are always computed by the app’s own code, not by the model.
If Apple Intelligence is turned off, or your device cannot run it, the app writes the puzzles itself and nothing about this policy changes.
Crash reports, only if you share them with developers
Math Citizen contains no crash-reporting service. If you have told iOS to share analytics with app developers, Apple may show us an anonymous crash report that names the part of the code that failed. That is Apple’s mechanism, under your control in iOS Settings, and it contains nothing you entered in the app.
Backups
Math Citizen has no cloud of its own and does not sync. If you back up your iPhone or iPad to iCloud or to a computer, iOS may include the app’s data in that backup, as it does for other apps. That is between you and Apple, under Apple’s terms; Company31 has no access to it.
Children
Math Citizen is made to be suitable for children, and is rated 4+ on the App Store. It collects no personal information from anyone of any age, children included:
- There is no account, and the app asks for no email address, birthdate, photo or contact.
- It asks for a first name or nickname (any name works) and an age in years. Both stay on the device; the name is used only to greet the player, and the age only to suggest a starting level and choose story themes.
- There is no advertising of any kind, and no in-app purchases.
- There is no chat, no leaderboard and no way to contact or be contacted by other people.
A parent or guardian can remove everything the app holds at any time, as described below.
Retention and deletion
Company31 holds no data about you from Math Citizen, so there is nothing for us to retain or delete. What exists, exists on your device, until you remove it:
- To start again: open Settings › Reset progress in the app. It wipes your name, age, progress, badges and settings from the device.
- To remove everything: delete the app. iOS deletes its data with it.
- To change your name or age: edit them in the app’s Settings.
If you email us for support, we keep that correspondence only as long as it takes to help you, and we do not add you to any list.
Your rights
Australian privacy law, the GDPR and similar laws give you rights over personal information a company holds about you: access, correction, deletion, portability and objection. Because we hold none from this app, there is nothing to exercise those rights against — but if you believe we hold something about you, write to us and we will answer. You may also complain to the Office of the Australian Information Commissioner.
Changes to this policy
If the app ever starts doing something this page does not describe, this page changes first, and the version and date at the top change with it. A change that means anything would leave your device will also be told to you inside the app before it happens.
Contact
- connect [at] company31.com
- Publisher
- Company31 Pty Ltd, ACN 698 697 166, Sydney, New South Wales, Australia.
- On the App Store
- The seller is shown as Manuel Re, the Apple developer account Math Citizen is published under. The app is made and supported by Company31 Pty Ltd, which is responsible for this policy.
- The app
- Math Citizen for iPhone and iPad