The price is $1-2 more per ride and a I have to wait a few more minutes, but it does the job. The drivers I've talked to also prefer the compensation structure more than Uber and Lyft. Fasten's cut is fixed at $1 per ride (vs 20-28%), or $12 for the day. And like Uber, they get paid every Wednesday.
It's not available at the airport, but there's a city bus that drives from the airport to downtown (where getting a rideshare is easy) in 30 minutes for $1.75.
EDIT: Clarified Fasten's commission.