Subspace takes care of syncing under the hood, syncing exactly what you need when you need it. It saves the state to a local database ensuring the DApp always syncs from the last known point even after reloading the DApp.
Subspace embraces reactive programming with RxJS. It provides methods to track and subscribe to events, contract state & balances, and react to changes via observables.
Subspace is framework agnostic and integrates well with your favourite frameworks, from React to Angular. It works in the browser and in nodejs.