I'm sorry for the founder that this didn't work out.

However, I always find it a bit crappy when services just suddenly shut down. Was there not the option to ask users for more money and/or donations?

Perhaps just being naive here and I admit I know nothing about Notifo... but it does seem like there's a systemic problem with innovative startups suddenly shutting up shop after running out of cash when perhaps they could have turned things around if they'd admitted to their customers earlier that they were short of cash.

Any thoughts?