Good 5k to 10k app - is there one?

[Miomio]

Is there a good one out there? looking for something akin to C25k which was great and worked. Have checked out a few on the android market place (don't mind paying for a good one) and the best seems to be B210K Pro but does seem to crash lots which would be most annoying to deal with!!

Anyone know anything good, preferably free!

Alternatively is there any good interval training apps - don't necessarily need a 10k app, just getting a bit bored on my 6k plods and need some focus!

I use rundouble on Android which seems to work. I've just finished c25k on it but have also downloaded b210k and improvers 5k programmes which I'm about to start. I also record runs on imapmyrun app too which is much better at giving pace and distance info but I'm a bit anal on collecting data!.