I've been wanting to build something like this for myself, but partnering/integrating with banks seems to be the main difficulty. How do you solve this?

And which cards / banks does it support?

Also, what does the name mean? It might be a tad difficult to google, unfortunately, since I imagine that googling "lang" would come up with a lot of other results.

It doesn’t integrate with banks. You log as you spend. It’s a common question, but I think there are many reasons to keep it manual. It keeps you aware of what you have left. And automation won’t ever be perfect, so you must keep an eye on it and adjust things.

The app focuses just on your everyday spending. You don’t log bills and subscriptions. And it’s not about being exact. You can add the rough total of what you spent. It acknowledges that when you plan your spending, it’s really just a guess. And you’ll adjust the plan as you go.

What did you have in mind when you thought about building something like this?

The name means ’long’, and is pronounced similarly. Naming is of course hard. I’m hoping that it will be something you remember.