Privacy policy

Who we are

Math Wordly ("we", "us") is the puzzle game at www.mathwordly.com and its apps for iOS and Android. If you have any question about this policy or your information, write to contact@mathwordly.com.

Information kept on your device

The game saves your progress on your own device, in your browser's local storage (or the app's storage on a phone): your levels, stars, coins, hints, daily results, streak, player level, the board you are in the middle of, your colour theme, and whether sound and vibration are on.

Clearing your browser's site data, or uninstalling the app, deletes this copy.

Your cloud save

So that your progress is kept safe and can be checked to be fair, the game also keeps a copy of it with us. The first time you play, it creates an anonymous account for you: an account with a random identifier and no email address, password or other contact details. With that account we store:

• Your username. One is made up for you at random, and you can change it on your Profile. Please do not use your real name or anything else that identifies you.
• Your progress, the same information as on your device.
• A record of your games: when a round started and ended, which board it was, how long it took, the mistakes made, hints used and hints bought.

We use this information only to run the game: to save and restore your progress, to check that results are genuine, to run battles, and to fix problems.

Battles

When you are one of the first players to solve a battle board, a recording of your solve is kept: the timing of each number you placed, your mistakes, your stars and your total time, together with your username. That recording is shown to other players, who race against it. It contains nothing else about you.

Information our servers receive

Like every website, our hosting provider receives the technical information your browser sends with each request, such as your IP address, browser type and the page asked for. It is used to deliver the site, keep it secure and work out what went wrong when something breaks, and it is kept in short-lived logs.

Analytics

We use Google Analytics on the website, and Google Analytics for Firebase in the apps for iOS and Android, to learn how the game is played, so we can make it better: how many people play each day, which screens are visited, how far players get through the tutorial, which boards are started, solved or left partway and how long they take, when hints are used or bought, and how battles end. It is never sent your username or your account's identifier.

On the website, Google Analytics sets cookies on your device to tell one visit from another. In the apps, it keeps a random identifier for the app on your device instead; it never uses your device's advertising identifier. Google uses your IP address to estimate your country and city, and does not store it.

If you are in the European Economic Area, the United Kingdom or Switzerland, Google Analytics sets no cookies on the website unless you agree to them, and the apps keep no analytics identifier when your device's region is set to one of those countries.

You can stop Google Analytics on every website with Google's opt-out add-on. Deleting the app removes its identifier.

Advertising and cookies

Apart from Google Analytics on the website (above), the game itself does not use cookies. It may show advertising served by Google: through Google AdSense on the website, and Google AdMob in the apps for iOS and Android. The ads are a banner under the board, a full-screen ad between some boards, and videos you choose to watch for a hint, a heart or your streak; a video only ever plays when you ask for one. Where ads are shown:

• In the Android app, AdMob may use your device's advertising ID to choose ads, unless you have deleted it or opted out in your device's settings. The iOS app never asks to track you, so AdMob does not get your device's advertising identifier there.
• Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or other websites.
• Google's use of advertising cookies enables it and its partners to serve ads to you based on your visits to this site and/or other sites on the Internet.
• You may opt out of personalised advertising by visiting Google's Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalised advertising at aboutads.info.
• If you are in the European Economic Area, the United Kingdom or Switzerland, you will be asked for your consent before any cookies are used for personalised ads, and you can change your choice at any time.

To learn more, read how Google uses information from sites that use its services.

Who we share information with

We do not sell your information. We share it only with the companies that run the game for us, each bound to protect it and to use it only for that work:

• Supabase, which hosts the database and the anonymous accounts.
• Vercel, which hosts the website and the game's servers.
• Google, which provides Google Analytics on the website and in the apps, and is the advertising provider when ads are shown.

We may also disclose information when the law requires it, or to protect the safety of our players or the game.

Children

Math Wordly is a game for a general audience, and it is fine for children to play. It never asks for a name, email address or any other contact details. We do not knowingly collect personal information from children under 13 (or the minimum age in your country). If you believe a child has told us something personal, for example in a username, contact us and we will delete it.

How long we keep it

Your cloud save is kept for as long as you play. Reset all progress on your Profile clears your progress, and on request we delete your account and everything stored with it. Battle recordings stay in the game for as long as the board does, unless you ask us to remove yours.

Your rights

Depending on where you live, you may have the right to see the information we hold about you, to correct it, to have it deleted, to object to how we use it, or to receive a copy. To make any of these requests, email contact@mathwordly.com with your username (it is shown on your Profile). We will reply within 30 days. You may also complain to your local data protection authority.

Keeping it safe

Information travels to and from the game encrypted (HTTPS), and the database only lets each account read its own progress. No system is perfectly secure, but we take care to protect what we keep.

Changes to this policy

If we change this policy, the new version will be posted on this page with a new date at the top. For an important change, we will also let players know in the game.