Wordmark · the primary logo
Symbol · the check on its own
Use the symbol alone only where the name is already on screen or the space is square: app icon, favicon, avatar, loading state.
App icon and favicon
Filled is the default (home screen, favicon, PWA). Outline is for white app stores and light print where a navy block is too heavy.
Clear space and minimum size
Keep clear space of x on every side: x is the height of the check's foot, about a quarter of the logo's height (12 px at the 50 px shown).
In the app: 24 px on the desktop bar, 20 px on the phone bar, 52 px on the front door. Below 20 px tall, use the symbol.
Don't