Generic TLD3 registrars
TLD guide
.app domain guide
.app works well for technical, product-forward names and is common in startup naming.
Good fit when
- Product launches, AI tools, developer utilities, and startup naming rounds.
- Run the full domain through live availability before committing brand work.
- Short roots often work better because the suffix already carries meaning.
Watchouts
- Check registrar support first because not every suffix is sold everywhere.
- Use live registry data for the final decision, not cached marketplace assumptions.
Example combinations
modelgrid.apppromptflow.appshipfast.app
Use these as naming references, then check your real root before deciding.
Next steps
Suffix coverage catalog snapshot: April 8, 2026.