Free tool
You know the playbook: a paid front-end offer fills the room, the back-end continuity pays the rent. Model the whole thing — upfront cash, cost per participant, added MRR, and ROI on ad spend — before you commit a dollar to ads.
Total revenue from this challenge
$11,980 upfront cash from the challenge itself, plus $11,200 in continuity revenue over 8 months of retention.
Upfront cash
$11,980
20 participants at $599
Cost per participant (CAC)
$100
ad spend / participants
Converted members
8
40% take the back-end membership
Added MRR
$1,400/mo
new recurring revenue each month
Back-end revenue
$11,200
over 8 months of retention
ROI on ad spend
11.59x
every $1 of ads returns $11.59
Run it for real
Sell the front-end challenge as a drop-in charge (3%, no monthly fee), then roll converts onto recurring membership billing (2% per invoice, $2 minimum). No separate funnel software, no spreadsheet reconciliation — the challenge and the continuity live in the same system your members check in with.
Set up your gym on OLMThe front-end offer (the challenge itself) is designed to cover your ad spend and fill the gym with people who've already paid you once. The real business is the back end: the percentage who convert to a recurring membership, times what they pay, times how long they stay.
Every output on this page is straight arithmetic on the numbers you entered — no growth curves, no industry benchmarks baked in, no promises. If you haven't run a challenge before, model the pessimistic case (lower conversion, shorter retention) and make sure the math still works.
Curious what running the back end costs on OLM? The savings calculator shows the per-invoice fee model against the monthly-subscription vendors.