https://burnernote.com - company is looking for some specific features added.

I love the simplicity, but can't imagine a lot of scenarios where this gets used in the real world, just out of curiosity what are the use cases for this app?

In general its used by remote devs who need to share things like API keys, tokens, credentials and other sensitive or auth related code.

It's actually used a lot.

We're working to move away from managing sensitive credentials in this way. Mostly by removing humans from the process and handling.

If this is the primary use-case, I would emulate something like bitlocker and enterprisey features for $

Oh yeah I've seen variants of this concept, Safenote, comes to mind which expires based off X views or Y days, but nice to see an open source one like yours!

Yopass⁽¹⁾ is the one I’m familiar with.

⁽¹⁾ https://github.com/jhaals/yopass

That's a pretty basic service

I guess one way to monetize it would be to sell integrations with enterprise products (preferably only the ones which are already not free).

You could well make the integrations open source as well, just with a different license (I'd personally require payments only for businesses with more than x revenue).