Whats the best mobile <> mobile wallet integration that you've seen to execute a transaction?

i.e. App 1 initiates transaction, App 2 (the wallet) completes it.

The fun, simple, & secure way to explore web3, NFTs, and Ethereum 🌈  We’ve moved accounts to @rainbow! 

Technowatermelon. Elder Millenial. Building Farcaster. 

nf.td/varun

Browser or warpcast + @rainbowdotme or coinbase wallet works ok for me on ios. A little glitchy at times but overall seems usable.
Unfortunately still far from what my father could get used to. To $degen