Step 1
Check the weakest slot
If one card earns far less than the rest, a pack has more room to improve the farm.
Player-entered tool
Packs or upgrades? Compare the payback.
Use the prices and income gains on your own screen. The calculator picks the faster return without pretending every player has the same cards or costs.
Quick answer
Buy the option that earns its cost back sooner
Quick answer
Payback time = cost ÷ income gained.
An upgrade that costs 1,000 and adds 100 per second pays back in 10 seconds. A pack that costs 5,000 and is expected to add 250 per second pays back in 20. In that example, the upgrade wins — but only because those were the numbers entered. Use your own.
- 1Read the cost shown in the game.
- 2Subtract old income per second from new income per second.
- 3Compare the two payback times and keep a Cash buffer.
Calculator
Enter four numbers from your farm
For the pack gain, use a conservative result from recent pulls. If you have no useful observation yet, do not manufacture one — open a small sample or choose the guaranteed upgrade.
Pack vs upgrade payback
Enter the numbers visible in your game. Nothing is prefilled or guessed.
Decision
Fill all four fields to compare how long each choice takes to earn back its cost.
Decision route
Use the tool without stalling your farm
Step 2
Check the keeper
If your best long-term card is under-upgraded, a known upgrade may beat another random pull.
Step 3
Keep a buffer
Do not spend to zero. Leave enough Cash for the next useful action and avoid stopping the income loop.
Common mistakes
What makes the calculation lie
The formula is simple. Bad inputs are the real problem.
Using the full card income as the gain
If a new card replaces an existing earner, subtract the old card's income. Only the difference improves the farm.
Using a lucky best-case pull
One rare pull is not a sensible expectation for the next pack. Use a conservative recent result.
Ignoring mutation or trait resources
A temporary boost can change the visible income. Compare like with like before you spend.
Upgrading filler because it is cheap
A quick payback can still be a poor choice if the card leaves your farm one pack later.