Onboarding describes some features

Switching to light mode

3D touch options on the bottom menu

Spelling out numbers

Switching to scientific mode

Settings and about

Drag and drop to save result to memory

Rounding off result using button on top right

Change app theme color

Signing up with email. Empty state for profile

Login and permissions for location and notifications

Onboarding (updated)

Splash screen and pre-login onboarding slides