Use the letters you wrote.
A .ttf file contains the characters listed at export. It does not contain the editable pen strokes. Keep your .lfproject backup to continue drawing.
macOS
Open the TTF in Font Book, use Validate File, then install it. In a document app that supports installed fonts, select your font family and type a character you have drawn. Font Book and document-app installation are pending verification for this release.
Windows
Open the TTF and choose Install. Restart an app if it does not refresh its font list. Select the family in a text app and test the characters in your export list. Windows installation is pending verification.
iPad, iPhone and Android
Use your file in an app that accepts custom fonts. Device and app support varies; importing a TTF does not change every system font. Mobile touch input and font installation are not yet verified on physical devices.
Missing letters
Only valid drawn characters and space are exported. If an app uses another font for a missing character, return to Lovable, draw that character, and export again.
Continue editing
Choose Open project on the start page and select your .lfproject file. Browser storage is local to this device and may be cleared; a project backup is your portable editable copy.