My understanding currently:
Typekit fonts are not licensed for embedding in an app.
You should check the EULA or contact the type foundry to see if the font can be embedded in an app.
Check with the foundry for the WOFF, or if you can use a conversion utility/service.
If the font is more current, the foundry may provide downloads for OTF/TTF and WOFF. That's where I'm getting the fonts I'm working with.
HTH - Colin