Return7 released version 3 of its popular BillMinder app on Tuesday, now a completely revamped program. As such, Return 7 decided to switch its users over to a separate app -- BillMinder 3 -- which requires users to pay to "upgrade" to the latest version. While the out-of-pocket expense ($1.99) isn't much, it's a move that hasn't been that popular in the past -- think Tweetie in the pre-Twitter days.
Amro Mousa, co-founder of Return7 told me today that BillMinder 3 isn't simply an upgrade. The company rewrote the entire app from scratch and that no code or art is shared with