Check out Molecule.dev.<p>It has basically everything you're requesting - both front-end and back-end, image uploads, authentication (and OAuth login via Twitter, Google, etc.), user plans/subscriptions, Stripe integration, cross-platform support with Apple Pay and Google Pay, push notifications, emails, documentation, unit tests, etc. And after some minor setup, it's immediately ready for you to publish to app stores if you wish to do so, with thorough step-by-step instructions on how to set it all up.<p>I should also note that it isn't a framework, so you're not locked into learning some specific way of doing things. It assembles full-stack codebases using tools and libraries most developers are already familiar with, so you'll have full control over everything. It is designed for teams, startups, and indie devs to quickly build and scale.<p>You'd still need to implement custom functionality like voting and reposting yourself, however.<p>Disclaimer: I'm the creator of Molecule.dev.