This calculator is arithmetic on a table, not a live mixer. Enter quantities from your own Sweep The Moon 🌕 session. It will not click the shop.
Drop probability
Class spin chance
Estimates the chance of seeing one class at least once. The 0.01 default is the November 9, 2026 community figure for Moon Marshal, written as a percent. Replace it with the percent on your Classes shop. This does not spend Shards and it is not a live drop rate.
Chance of at least one success = 1 − (1 − chance per attempt) raised to the number of attempts.
Community class lists dated November 9, 2026 give Moon Marshal a 0.01% roll. A separate community figure is 50 Shards per spin. Change both assumptions if the shop text differs.
Material planner
Shards still needed
Subtracts the Shards you already have from the cost of the spins you want. The default of 50 Shards per spin is a November 9, 2026 community figure. Type the price shown on the Classes shop if it is different.
Required total = materials per upgrade × number of upgrades. Missing = max(required total − materials already owned, 0).
Result is Shards still needed. It does not predict which class you roll.
Upgrade payback
Upgrade payback worksheet
A blank-style worksheet for a cash upgrade whose price you can read in your own shop. Brush, canister, and speed prices were not published, so the sample inputs are not game prices. Replace every number before you trust the result.
Payback cycles = upgrade cost ÷ extra profit per cycle, rounded up.
100, 10, and 2 are worksheet placeholders so the form has a worked example. They are not shop prices and they are not a sale formula.