Yes, you should be able to transfer them. I have only used the app a few times, so can't recall the procedural steps, but have a play with it - it gives you lots of prompts etc.

I can't vouch that an 8703e app will work on a curve, but it should at least transfer across (for example, I had a coloured-trackball app on a pearl. I was able to transfer the app to an 8800, but it didn't work as the 8800s don't have the same LEDs behind the trackball, and the app was registered to the PIN of the Pearl. So in a nutshell, the app did not work at all, but it did transfer across!)