Net revenue retention and churn for customer and finance leaders. A tether is what keeps something from drifting away — and what tells you when it has.
Free. Your figures never leave your browser — no signup, nothing you enter is uploaded. The chat assistant is the one part that talks to a server, and only what you type into it is sent.
ARR is annual recurring revenue — what a customer pays you over a year. Use the same ARR definition at both ends — annualised, committed, billed or recognised. Mixing two of them is invisible here and will corrupt every figure on the page.
One customer per line:
id | name | segment | ARR at start | ARR at end.
This box and the rows above are the same data — editing either updates the other.
Tether · a CMK Sons Labs operations tool · everything computed in your browser