Buy the option that removes your current bottleneck and gives the stronger observed gain per cost. If you cannot measure the effect yet, preserve cash and test a smaller purchase first.
Skip the fixed level ladders
The game names Luck and Coin upgrades but does not publish the full cost curve or conversion formula. Guides that say 'Luck to level 10, then Coins' may be easy to follow, but we could not find the table behind that rule.
Look at the next cost, the change shown on screen, and the slowest part of your loop. Those three numbers survive a balance update better than a copied level ladder.
Choose Luck for better result quality
Luck may fit when you care more about the quality of results and a short test shows a noticeable change. Run several similar sessions because one rare hit can distort a small sample.
If the difference is still hard to see, keep your cash. A few more samples beat a big purchase based on one lucky streak.
Choose Coins when throughput is the bottleneck
A Coin-focused purchase may fit when the visible change increases the amount or throughput you can measure consistently. Record the current value, next value, and cost, then compare that gain against the alternative. The comparison should be made in the same conditions and over the same test length.
A cheaper option is not automatically more efficient, and a larger absolute gain is not automatically a better use of cash. Use both percentage gain and gain per cost.
- Compare like with like.
- Keep temporary boosts separate.
- Retest after a world update.
- Stop when the next effect is not visible.
Use the comparator without over-reading it
The calculator reports arithmetic from your entries. It cannot know unpublished loot odds, hidden breakpoints, or how two systems interact. Treat its winner as the more efficient input scenario, then confirm the result with a short in-game test.
When the two options are close, convenience and your immediate goal matter. A small numerical edge may not justify delaying a world unlock or a clearly useful quality improvement.
Common questions
Should I upgrade Luck or Coins first?
Choose the option that improves your current bottleneck most per cost using visible or measured values. No universal order is confirmed.
Are fixed level bands reliable?
The pages reviewed did not show a source for fixed bands, so this site does not repeat them as fact.
What if the effects use different units?
Compare each option’s percentage gain and interpret the result within its own goal; do not pretend unlike effects are identical.
When should I recalculate?
Recalculate after a purchase, a world change, a balance update, or the end of a temporary event.