Splitting shared household bills with flatmates always ends in an argument

Electricity, internet, generator fuel, cleaning supplies. Somebody always fronts the money and is then owed by three people who 'will send it later'. Usage isn't equal either.
Who has it
People sharing apartments
How often
Monthly
Pain
Irritating
Would pay
Free, or a tiny fee
Today’s workaround
Splitwise, which nobody actually settles.

Who’s building this

Nobody yet. This one’s up for grabs.

I’m building this
Stage

Me too

Your version of the problem. Real stories are what builders need to get it right.