My quickest stack to SaaS MVP

As a developer, when I want to spin up a SaaS( or similar idea) as quick as possible, I fall back on this stack and iterate as need be.

Hosting - Heroku
http://www.heroku.com
It's free to deploy and then ~$30/mo to have something that will take you very far. Has free/paid addons for email, databases, SSL, etc!

Mobile Development - Flutter
http://www.flutter.dev
This has been a breeze to get something to deployed to Android, iOS and even web/macOS very quick! If you get into the weeds with some newer platform specific tech, it allows you to write native plugins to fill in the gaps! There are also a ton of content on YouTube to get you started

UI Development - React/Angular
https://react.dev/
https://angular.io/
This is probably the area that can vary the greatest. You could probably even find a no-code option! I choose React or Angular because they have been around for a while and have quite the knowledge base. There has been a lot of progress with recent versions integrating things that used to require additional plugins or configuration.

Database - Firebase
https://firebase.google.com/
There are probably a few services out there that are more out of the box and even more "database as a service" related, but I found FIrebase to be the perfect mix of plug and play and versatility. Database, real time streams, authentication!

Project Management - Trello
https://trello.com/
This one may be getting replaced soon given the Atlassian purchase, but as of now, it hasn't been too much of a hindrence. Trello allows me to spin up many simple glorified to-do lists to trigger the little dopamine hits required to keep moving forward!

This is just my personal preference. I'd love to hear others!