Great app before iOS 9 update

Once iOS 9 came out, this app stopped working altogether. Click on icon, blue screen comes up, with a flash of the tuner screen then it completely shuts down. Support link takes me to an unfinished website. Hopefully they can be made aware of this issue. No other app in its free version gives me the flexibility this one has. Uninstalled/installed, restarted and reset my phone, to no avail.

TX Saxman about Musician's Kit - Tuner, Metronome, and Sound Recorder