From past experience, android apps don't have a fast responding system as it always hanging when it's being used more frequently or other apps are running in the background. For the best user experience
When I used 2 gigabyte RAM phone with lower processor (low range or budget phone in short) I noticed this also. But when I changed to mid range phone that has 8 gigabyte RAM with higher processor, I can open 8 exchanges and none of them will close underneath. Such phone and flagship phones gives the real experience. I always open like 5 exchanges at the same time and none will close automatically.
If I go back to Bybit app, it load the candle stick immediately, less than 1 second. If I am in the trading part, it corrected the PnL in less than 2 to 3 seconds.
I also saw something like this on Gate.io
Binance is the worst and Bitget.
MEXC is fast also.
Bybit is a good choice for those okay with trading on centralized exchanges.
Yes, the best experience I have is on Bybit if you should not talk about the trading fee. Its trading fee is also just like most other exchanges except MEXC that has lower fee.
I don't see any difference between the apps installed on Android and iOS, as they are completely identical. As for the usability, the applications do not have any big differences, except for example on MEXC the futures button is on the right side of the spot, and on the Gate on the left side. Sometimes I get confused because the interface is very similar, but it doesn't annoy me.
When I registered on MEXC and that was very frustrating for me, I changed it to how it is on other exchanges. I click on the menu (...) -> preferences -> trading section position.