Last updated: November 8, 2026
Wonder Why is designed to be simple and to respect your privacy.
Nothing that identifies you. There is no account to create. Only if you agree, the app sends anonymous usage statistics: see “Anonymous statistics” below.
If you agree — the app asks once, and you can change your mind anytime in Settings — Wonder Why sends anonymous usage statistics to PostHog, an analytics service with servers in the European Union. They say which whys are read, saved and shared, answers to the true-or-false quiz, badges, use of the Library, language and notification settings, plus technical details such as the app version, iOS version and device model. They are tied to a random code created for this installation, not to you: no name, email, account or location, and the IP address is discarded. Nothing is sent without your consent; if you withdraw it, nothing more is sent and the app forgets the code.
Your progress — days read, badges, saved whys, and your language, appearance and notification preferences — stays only on this iPhone. There is no account or sync, so if you delete the app, or change device without an iPhone backup, it is lost. You can also erase your progress at any time with “Reset progress” in Settings.
To bring you new whys without an app update, Wonder Why downloads the content catalog from the internet from time to time — the same catalog for everyone. The request carries no account, no identifier and nothing about what you read or save. As with any internet connection, the service hosting the content sees the IP address the request comes from; we don’t use it to identify you. Without a connection, the app keeps working with the content it already has.
If you turn on the daily notification, the app asks iOS for permission and schedules the reminders on your iPhone, at the time you choose. They are created entirely on the device, with no server involved. You can turn them off at any time in the app’s Settings or in iOS Settings.
Wonder Why has no advertising and no tracking: it never links what you do in the app with data from other apps or websites, and it never builds a profile of you.
The Share button creates an image of the why you chose, together with its text and a link to the app, and sends them to the app you pick — only when you tap it. The image is drawn on your iPhone and is never uploaded to any server. Nothing is ever shared automatically.
For any question about this policy you can write to: wonderwhyapp@gmail.com