i am looking readymade android app -- 2

I am Looking 100 % Crash Free Readymade android app in Kotlin so Experienced Android Developer Can Bid On My project requirement and other one thing i am looking to hire developer for long term .. First Priority Only For Surat

Reference App :

https://play.google.com/store/apps/details?id=com.threestar.gallery&hl=en

https://play.google.com/store/apps/details?id=com.shaiban.audioplayer.mplayer&hl=en

https://play.google.com/store/apps/details?id=com.recorder.music.bstech.videoplayer&hl=en