This app wont open

I got this app a while back, and it has been great for recording personal memories of my babies. But as of right now it wont even open it it just opens then closes. I shut my phone off and turned it back on and nothing. Please fix this so I can get all my notes I have saved since my baby was born.

Turtlettttt about Chronicle - personal journal and secret diary - write notes, v1.4.1