Volume booster in android phones

[halenrauch]

I have captured CALL VOLUME BOOSTER and also VOLUME BOOSTER OF LOVEKARA. in my device (oppo A83)

1. will 2 such apps give any conflict;. The first one only enhance call volume and the second only ringtone. As I am moderately hearing impaired both are necessities\

2. having saved these apps in the device how to use them. clear instructions will be welcome

thanks