Request To Dev to make this app freemium with a free tier and full a pro to unlock pro features with inapp purchase 🙏

Please make this app have a free tier and premium tier I really wanna buy the app but I want to test the app if it is good for my use case or not before I buy the app also please make the app compatible with armeabi-v7a and armeabi . I use a dumbphone (with android 32 bit Ig) . 6 $ is a lot in my country so before I buy I need to know if the app works and performs well on my device.