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No. Echo Odyssey does not require sign-in. Your learning progress, bookmarks, and preferences are stored locally on your device.

Use bookmarks for a deliberate return point. Echo Odyssey also keeps your local progress so completed cards remain visible when you reopen the app.

Open Settings → Reading Tools to choose larger text, adjust speech speed, and test the English audio reader. The interface also supports Dynamic Type and light or dark appearance.

The Watch companion presents the minimum-study checklist only. Keep the iPhone app installed, open it once, then open the Watch app. Checklist state transfers between paired devices when connectivity is available.

The Watch needs an initial checklist from its paired iPhone. In Simulator, use an iPhone Simulator paired with that Watch Simulator; a simulated Watch cannot communicate with a physical iPhone.

Open Echo Odyssey on the paired iPhone, enter Minimum Echo Study once, then reopen the Watch app. Confirm Bluetooth and Wi‑Fi are enabled on physical devices. In Simulator, boot the paired iPhone and Watch together and run both app targets.

No. It is an educational reference for echocardiography professionals and learners. It does not diagnose disease, interpret patient data, or replace a complete clinical examination.

Use the developer contact available on the Echo Odyssey App Store product page. Include your device model, software version, the screen or card involved, and a short description. Do not include patient-identifiable information.