How to lock the app for privacy?
To enhance the privacy of your data in TickTick, use the Lock feature.
Open TickTick on your Android device, then either swipe to the right or tap the hamburger button in the upper-left corner.
Tap the gear-shaped icon in the upper right corner.
Tap "Security & Data" to enable Pattern Lock.
Trace an unlock pattern twice to set a pattern lock for TickTick.