Privacy Policy

sottaku is a geography quiz app made by North Island Technologies, LLC. This page says what the app collects and why. Last updated November 10, 2026.

What we collect

If you play without signing in, the app creates a random secret on your phone and sends it with your requests. We store only a one-way hash of it, so we can recognise your device. If you sign in, we receive an account identifier from our login provider, Auth0; your email address stays with Auth0 and is not stored by the quiz service.

In both cases we store the answers you give to quiz cards and when you gave them, the 1–10 ratings you give cards and topics, any steering text you type, your in-app settings (which topics to study, whether to show the stats panel), when you first used the app, and whether you have a subscription. The app also tells our server your phone's time zone offset, so that “today” starts at your midnight.

Purchases

Subscriptions are sold by Apple through the App Store. We use RevenueCat to check what you have bought; it receives an identifier for you and your purchase history, but never your payment details, which stay with Apple.

Usage and crash data

The app sends usage events (such as opening the app, the quiz cards you see and answer, the screens and buttons you use, and purchases) and error reports to PostHog (PostHog Inc., which processes the data in the United States), our analytics provider. PostHog also receives your device's IP address with each request and may use it to estimate your general location. Each event carries a random identifier generated on your phone and our internal user id for you (the same id the quiz service uses; never your name or email address), so we can tie usage to your progress and plan. Text you type (steering, feedback, codes) is never sent to PostHog, only its length. We use these events to see whether the app works and how it is used. If you arrived from an Apple Search Ads ad, the app also asks Apple for a privacy-preserving attribution token, which RevenueCat uses to tell us which campaign led to your install.

What we don't do

No tracking across other apps or websites, and we do not sell your data or share it for advertising. The only services that see data are the ones above: Auth0 (login), RevenueCat and Apple (purchases and ad attribution), PostHog (usage and error reports), and our own server host.

Keeping and deleting your data

We keep your data while you use the app. Settings › Delete account in the app erases your answers, feedback, settings and account record from our servers at once, whether you play as a guest or signed in. It does not cancel a subscription; you can do that in Settings › Apple ID › Subscriptions on your phone. Your Auth0 login identity is shared with other North Island apps; to have it removed too, contact us. Delete account does not yet remove the usage events PostHog holds under your user id; contact us and we will have them deleted.

Children

The app is not directed to children under 13 and we do not knowingly collect their data.

Contact

Email support@northisland.tech.