"Sorted Wallet" is a fully custodial shitcoin app that runs natively on KaiOS feature phones. They had 50,000 installs in their first 6 month last year (2023). Africa in particular has a large base of feature phone users and there does not seem to be any barriers to deploying "crypto wallets" on their app stores. 

Current apps seem to be built with js but the KaiOS roadmap is to support WebAssembly, which would unlock the possiblity of building efficient Rust apps with the full Bitcoin-Rust stack.

Is there anyone developing a non-custodial Bitcoin only app for KaiOS? Rust can target asm.js which should run on most KaiOS phones, so development with the Bitcoin-Rust stack is possible - even if it might not be as secure or efficient as Wasm.

https://sortedwallet.com/
https://kaios.dev/2023/11/guest-post-building-a-crypto-wallet-on-kaios/

#KaiOS #Rust #Africa 

 👀 

 Nice challenge, i am in for it. 

 A simple Fedimint Wallet would be great