Privacy Policy
Last updated 10 June 2026
Quiz Caster is a free web game that turns study decks into a game, for learners of all ages. It is also made to be friendly and safe for children. This policy explains, in plain language, what information the game does and does not collect, and the choices you have. It is written for our players and, where the player is a child, for their parents and guardians. In this policy, "we" and "us" mean the team behind Quiz Caster.
The short version
- There are no accounts and no sign-in.
- We collect usage analytics to improve the game. These are not linked to a name, an email, or any real-world identity. Outside Europe we save one random code in your browser, used only to understand whether the game helps people learn over time. In Europe we save nothing at all for analytics.
- We do not collect the actual content of the questions or the specific answers a player gives. We may use anonymous performance summaries (such as percentage correct) to understand whether the game helps people learn.
- We collect an email address only if an adult chooses to give one (to receive updates, or to recover a parental-lock PIN).
- We do not sell personal information and do not show third-party advertising in this build.
Information we collect
1. Game data stored on your device
Your progress, settings, selected study sets, chosen outfit, and parental-lock configuration are saved in your browser's local storage. This stays on the device and is not transmitted to us as part of an account (there are no accounts). Clearing your browser data removes it.
2. Usage analytics
We use PostHog to understand how the game is used so we can improve it. Analytics are never linked to a name, an email, or any real-world identity, we do not create user profiles, and we never collect the content of anyone's study activity. What we store depends on where you are playing:
- In Europe (EU/EEA, the UK, and Switzerland): analytics are fully cookieless. We store nothing on your device for analytics. Visitor counts are estimated in a privacy-preserving way that is designed not to recognize you from one day to the next.
- Everywhere else: we save one random code (a "device code") in your browser's local storage. It is a random number we make up on the spot - it is not your name, email, or account, and it cannot identify you to anyone. We use it solely to support the internal operations of the game: measuring whether practicing in the game helps players improve over time, keeping our usage statistics accurate, and debugging. It is not used to contact anyone, not used for advertising of any kind, and not used to build a profile of a specific person, and it is kept separate from any email, feedback message, or other information that could identify someone. The game is designed to support this: our analytics layer is built to strip identifying fields from events, and the device code is not attached to email or feedback submissions. If the check that tells us which region you are in fails for any reason, we treat you as if you were in Europe and store nothing. You can delete the device code at any time by clearing your browser data.
The events we collect fall into a few general categories, for example:
| Categories we collect (examples) | We do not collect |
|---|---|
| How the game is navigated and played (such as screen views, runs started or ended, quiz and upgrade choices, share link activity, study set create/delete, and tutorial or parental-lock milestones); gameplay outcomes (such as time survived, player level, and weapons or upgrades chosen); aggregate learning performance (such as number correct, average response time, and difficulty tier); the general subjects practiced; and general device or browser type. We may add similar product and performance events over time. | The text of any question, the specific answers a player gives, names, precise location, or anything tying gameplay to a real person. |
To estimate visitor counts, our analytics provider derives a one-way code (a hash) from technical details such as your IP address and browser type. This code is used only to count visits; it is not stored as a lasting identifier and is not used to identify you.
3. Feedback you send
If you use the in-game "Feedback" button, the message you type is sent to us so we can read and act on it. Please do not include personal information in feedback messages.
4. Email address (optional, adult-initiated)
- Get Updates: if an adult enters an email to receive occasional product updates, we store that email so we can contact them. It is kept separate from gameplay analytics and is not linked to any child's activity.
- Parental-lock PIN recovery: if a parent sets up the optional Quiz Library lock, they may provide an email used only to help reset a forgotten PIN.
How we use information
- To run, maintain, and improve the game.
- To understand, in aggregate and anonymously, how features are used.
- To respond to feedback.
- To send product updates to adults who asked for them.
We do not use information for third-party advertising, and we do not sell or rent personal information.
Service providers
Providers are permitted to process information only to provide their service to us, and never for their own purposes such as advertising. We currently use:
- PostHog - processes the analytics events described above on our behalf.
- Cloudflare - runs our sharing service (when you share or open a shared quiz) and the region check that decides whether the device code described above is allowed. The region check looks only at which country a connection comes from; we do not receive or store your IP address from it.
As the game grows we may add providers (for example, to send update emails); we will update this policy when we do.
Children's privacy
Quiz Caster is for players of all ages. Because it is also appealing to and used by children, we take extra care with younger players. We have designed the game to minimize data: there are no accounts, analytics use at most a single random device code that identifies no one (and in Europe, nothing at all), and we do not collect the content of anyone's study activity (such as the specific questions and answers).
Where we use a device code, it is collected with no other personal information and is used only for the internal operations of the game described above: it is not used to contact anyone, not used for advertising, and not used to build a profile of a specific person.
We do not knowingly collect personal information directly from a child. Any email we hold is provided by an adult. If you are a parent or guardian and believe we hold information relating to your child, or you want information reviewed or deleted, contact us using the "Feedback" button in the game and we will address it promptly.
Depending on where you live, laws such as the U.S. Children's Online Privacy Protection Act (COPPA) and the EU/UK GDPR (including protections for children) may give you specific rights. We aim to honor those rights regardless of location.
Data retention
On-device data (game progress, settings, and the device code where it applies) remains until you clear your browser. Analytics events, including any device code attached to them, are kept only as long as they remain useful for improving the game - generally no more than about 24 months - after which they are deleted or de-identified. Emails are retained until the person asks us to remove them or they are no longer needed for the purpose they were given for.
Your choices
- You can clear on-device data at any time through your browser settings.
- You can ask us to delete an email we hold via the "Feedback" button.
- You can use the game without ever providing an email.
Changes to this policy
This is an early ("pre-alpha") product and this policy may change as the game evolves. We will update the date at the top when we make changes.
Contact
For any privacy question or request, use the "Feedback" button on the main menu.
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