Show HN: A Calculator for Garden Horizons (gardenhorizons.app)

I built a specialized calculator for Garden Horizons, a farming simulation on Roblox that has a surprisingly non-linear economic system.

The Problem: Most players struggle to decide when to harvest. The game uses a specific formula where crop value isn't linear to weight, but scales with its square:

$$Value = Base * (Weight)^2 * Maturity * Color * Mutations$$

What this tool does:

True ROI Calculation: It doesn't just show gross revenue; it subtracts seed costs to show the actual Net Profit.

Scaling Logic: It accurately models the "Lush" maturity states (1.0 to 3.0) and color multipliers (Silver x2, Gold x5, Rainbow).

Real-time Prediction: Uses sliders to simulate potential growth, helping players decide if they should harvest now or wait another 2 hours.

Tech Stack: Kept it extremely lightweight for mobile-first use (since most players have the tool open on their phones while gaming). It’s a pure reactive frontend implementation to ensure the "sliding" experience is zero-latency.

URL: https://gardenhorizons.app/

I’m curious to hear from anyone who enjoys "min-maxing" game economies or has feedback on the UI for high-frequency utility tools.