appcenter-sampleapp-react-native VS create-t3-turbo

If your MVP app can work without custom backend then better to launch such way. Left the error handling, event tracker and user sign-ups for existing BaaS solutions. Firebase, AppCenter or alternatives. Believe me, you'll have time to switch to custom backend or BaaS paid plan in case of huge growth of userbase. To have such case, you'll need vast resources for advertising.

Check out this starter repo https://github.com/t3-oss/create-t3-turbo I didn’t use it because it didn’t really fit my needs but it I’ve heard good things about it. May work for you

You can checkout https://github.com/t3-oss/create-t3-turbo which is based on https://create.t3.gg

t3-oss/create-t3-turbo: Clean and simple starter repo using the T3 Stack along with Expo React Native (github.com)

I don't have experience with this personally, but create-t3-turbo might be useful for you if this is something you want to do.

https://github.com/t3-oss/create-t3-turbo is a great repo for getting started quickly and seeing the advantages of exactly this.

I’ve been using a monorepo from the create-t3-turbo that uses pnpm and I haven’t had any issues so far.

create-t3-turbo is an amazing example of a turborepo setup done right, im always referencing it for how Julius (the creator) has things setup.

Coming back to your question, for development velocity the best option would be: Trpc + next.js + react native(Instead of flutter) in a turborepo. Look into this https://github.com/t3-oss/create-t3-turbo

create-t3-turbo is an excellent starting point IMO. There are forks of it that include things like Solito, Clerk (for authentication) and others. It does leverage tRPC quite heavily, but if your API is malleable enough to work with it, it really helps simplify everything for your shared API logic.

Understood. Can I swap out next trpc and plug in express trpc? I'm using T3 monorepo https://github.com/t3-oss/create-t3-turbo