15 years as a CFO before I became a founder myself.
The thing that kept killing companies I worked with wasn't high burn. It was that founders didn't know their exact runout date. Ask them their burn rate they had a rough number. Ask them the exact month they'd hit zero silence.
By the time they knew, it was usually 6 weeks away.
I built this in a weekend. No login, no upsell. Just the number every founder should know.