The suggestions in this thread are decent, but I haven’t seen a mention of prioritising what you know.

What’s your goal?

If as you mention you have an app to prototype and you want that prototype as fast and simple as possible, then you can’t use tech and tooling you don’t know.

Any time spent learning the new tech, is time you could have spent on the prototype.

With that lens, you can see the variety of suggestions here are what people know best.

If you goal is to learn a new tool, or to learn a new tool alongside a prototype, you have to trade off speed. It will take a bit longer.

Spend your novelty tokens wisely.