resetReset’s timer, local history and bundled educational content work without an internet connection after installation. Airplane mode does not turn those local features into an online service.
Purchasing, downloading and opening external web pages are different activities.
What remains available offline
You can start and end a session, inspect saved history, correct recorded times and read the app’s bundled explanations. Reset’s Android manifest does not request the INTERNET permission.
The timer is based on timestamps, not on a request to a Reset server. You do not need to keep a browser page open or periodically reconnect to refresh a subscription.
What still needs another service
Google Play needs connectivity for the purchase and download. A support email is handled by your email app. A privacy-policy website opens in a browser. These services follow their own network and account rules.
Airplane mode may also leave Wi-Fi available depending on your phone’s settings. The useful privacy distinction is the app’s own behaviour, not merely whether an airplane icon is visible.
Local reminders still have settings
Reset schedules local Android notifications. Those do not need a push message from our server, but delivery still depends on notification permissions, alarm access and device behaviour.
Airplane mode is not the same as Do Not Disturb. If the countdown works but an alert does not appear, follow the Android reminder checklist.
Keep time settings accurate when travelling
Working offline does not make a manually incorrect phone clock harmless. Check the device’s date, time and time zone if displayed endpoints look unexpected.
For a flight, keep a note of both local zones and read tracking across time zones. Reset’s offline capability is useful for recording, but it does not determine whether fasting during your journey is appropriate or replace advice about food, fluids or medication.