As a regular user, I usually choose TradingView, Coinmarketcap, Coingecko or Blockfolio to track and receive trading signals, even some signal channels on Telegram also continuously have signals for the community. I rarely use new applications, I will wait for user feedback before installing a new application on my phone. But this does not mean that you do not have a chance, complete your App further to get users with the best and most friendly features.

I just read a review of your App, it seems that your App consumes quite a lot of internet data during operation: 1.5GB/half a day. I really don't like this very much ^^

"It's good overall, but the app consumes too much data, for example it can use up to 1.5GB in half a day"

Such apps will never give you correct signals so avoid trading by following such apps. An ordinary web developer can easily create such apps so it is better not to trust all apps so easily. If you search the Play Store, you will find many apps that claim to provide 100% accurate trading signals. They make such claims only to increase the number of users of their app but if you believe them and install their app and trade according to their instructions then you will definitely get hurt. Rely as much as you need to on your own trading skills, there is no need to follow other people's trading strategies.

Indicators help and facilitate trading on the stock exchange, but you can't all be sure that they will help you.