I wish there was a mobile wallet that had all the features I want but their just isn't, Cake Wallet is cool with its CakePay built in, Stack Wallet/StackDuo is cool with support for PayNyms in the BTC wallet and churning in the XMR wallet, Monerujo has PocketChange which is awesome and sidekick seems cool for air gapping. None of the features are absolutely needed I don't guess but they are nice to have for sure.
Discussion
I'll help you make one? I know Java?
Heh I'm just kidding I'm retarded and kinda know Java... But I can get you coffee?
I can make a hello world program and a super basic calculator program in the terminal lol I don't think I'll be building apps anytime soon lol.
i like mysu (still beta) because its a total no frills wallet. It shows your transactions, it shows your balance, it lets you send, and it lets you receive. And that's it.