Set MNML Start as your home page
Browsers do not let a website change this for you, so it is a quick one time setting. Your start page address is https://mnmlstart.com/start. That address always opens your default page once you are signed in.
Chrome, Edge, Brave
Settings, then On startup, choose Open a specific page and enter the address. For new tabs, Chrome based browsers need an extension such as New Tab Redirect or Custom New Tab URL; point it at the same address.
Firefox
Settings, then Home. Set Homepage and new windows to Custom URLs and paste the address. New tabs in Firefox also need a small extension (New Tab Override) to open a custom page.
Safari
Safari, Settings, General. Set Homepage to the address and choose Homepage for New windows open with and New tabs open with. No extension needed.
Phone
Open the start page in your phone browser and choose Add to Home Screen. It installs as an app that opens straight to your page.