💰 ROI Investment Calculator
Make smarter decisions! Find out whether to buy a new tower or upgrade existing ones for maximum efficiency.
No towers yet. Add your current towers to get personalized recommendations!
❓ How Does This Work?
ROI (Return on Investment) = DPS Gain ÷ Cost
💡 Higher ROI means better value for your money. We calculate the DPS increase you'll get for every coin spent.
🎯 Our recommendation: Always invest in the option with the highest ROI first!
⏱️ Payback Waves: How many waves it takes to earn back your investment.