A useful learning history needs a clear learner identity
Personalization depends on connecting a goal, practice results, and later review to the same learner. If a friend answers questions inside your account, the resulting context may not describe your own ability. If you accidentally create a second account, a familiar goal may appear to be missing. Before assuming that memory or planning failed, check which account is currently active and whether the recent practice belongs to you.
A shared phone, family tablet, or classroom computer makes this check especially useful. The visible device does not tell the tutor who is typing. Keep the account boundary clear so the learning context remains a helpful description of one person's progress rather than a mixture of several people's interests and errors.
Separate the app entry point from the learning account
Think of the Home Screen icon as a door rather than a profile. It opens the service in an app-style window on supported browsers, but it does not establish whose plan should be shown. You still need the appropriate signed-in account. This distinction also explains why uninstalling an icon and signing out are different actions, and why you should check account controls separately from the device's app shortcut settings.
Use a brief opening check on another device
When returning on a laptop after practicing on a phone, ask for the next relevant task and read it before continuing. Does the goal match? Is the time commitment still realistic? Are you looking at work you intended to review? These questions reveal a context mismatch early. They are more useful than beginning a long lesson and only afterward noticing that the task belonged to a different account or an outdated plan.
Keep shared-device examples impersonal
If you are demonstrating Mocchi to someone else, use an invented learner situation and avoid changing your saved goal merely to show a feature. Explain that the demonstration is temporary. For a real second learner, use their own account and setup. A demonstration should not create a new picture of your level or preferences that later makes your own practice less suitable.
Finish with a clear return point and a clean handover
Before closing, note the next task and sign out when the device is shared. Do not assume that closing an app-style window always signs you out. When you return, use the same account and verify the context again if anything looks unfamiliar. This simple routine protects the usefulness of a personal study plan and makes the PWA a convenient starting point rather than a source of confusion about whose learning is in progress.