Sell Lemons Upgrade Planner
Add multiple upgrade options and compare ROI, payback time, income gain, and priority score before spending cash.
Upgrade ROI planner
Recommended first
Stand boost
1. Stand boost
ROI 1.78% per cost unit
2. Helper speed
ROI 1.04% per cost unit
3. Delivery route
ROI 0.96% per cost unit
Best upgrades to prioritize
Prioritize upgrades that increase cash per second, helper speed, automation value, or unlock access to stronger income layers. Cosmetic or low-impact purchases can wait unless they gate an important unlock.
How to compare upgrades
Compare cost against the extra cash per second. Percentage boosts are stronger when your current income is already high. Flat income boosts can be better early because they add immediate value even before your base income scales.
Common upgrade mistakes
- Buying the cheapest option without checking payback time.
- Ignoring flat income gains during early progress.
- Saving too long for a huge upgrade while short upgrades would pay back quickly.
- Assuming every percentage boost is valuable at low income.
When to save cash instead of upgrading
Save cash when the next unlock is close, when the planner shows a long payback window, or when a rebirth-like reset would change the value of every upgrade.
Related tools and guides
FAQ
How does the Upgrade Planner rank upgrades?+
It ranks upgrades by estimated income gain, cost, payback time, ROI, and a fan-made priority score.
Should I always buy the top ranked upgrade?+
Not always. The top option is usually efficient, but you should still consider unlock requirements and whether you are saving for a larger goal.
What is flat income increase?+
Flat income increase is extra cash per second added directly by an upgrade, separate from percentage boosts.
What if an upgrade has both boost and flat income?+
Enter both values. The planner combines the percent gain and flat gain into one estimated income gain.
Can I plan best upgrades without exact game formulas?+
Yes, but only as an estimate. The planner is best for comparing options using the numbers you can see in game.