Transparent Formulas
For an upgrade goal, the calculator subtracts current cash from target cost and never returns less than zero. It divides the remaining amount by your current income per second to estimate time, then adds your income across the session length to project cash. For runs, it removes the safety buffer and counts only whole round trips.
- Cash still needed = max(0, target cost − current cash)
- Time to goal = remaining cash ÷ income per second
- Projected cash = current cash + income per second × session minutes × 60
- Full runs = floor(available seconds ÷ round-trip seconds)