Stop guessing at fertilizer. GroundKit turns your soil test into exact NPK (nitrogen, phosphorus, potassium) recommendations from a curated organic-only amendment library — for every bed and crop. Plus zone-aware seed planning and a frost-smart planting calendar.
See It In Action
GroundKit meets you where you are. Enter your soil test results, your USDA zone, and your season — and get precise amendment recommendations and a full planting plan built around your beds.
Everything You Need
From soil test to harvest, GroundKit gives you the soil intelligence and planning tools to grow with confidence every season.
NPK stands for nitrogen, phosphorus, and potassium — the three macronutrients every plant needs. Enter your soil test values and get precise amendment recommendations tailored to your crops and garden beds. Know exactly what your soil needs before you plant.
Precision amendmentsDiscover crops matched to your USDA zone, soil, and season. Pin the ones you're growing to track them through the season.
Zone-matched picksLay out your beds, assign crops, and visualize your full growing space. See companion plant suggestions and what was grown in each cell last season — all before you dig a single hole.
Visual bed layoutTrack planting events on a visual calendar with frost-date awareness. Set your last and first frost dates to see your safe growing window highlighted in green.
Zone-aware schedulingA curated library of organic amendments — blood meal, kelp meal, rock phosphate, worm castings, and more — with no synthetic fertilizers. Plan compost application bed-by-bed with cubic-foot volumes and NPK delivery estimates. Supports standard compost, worm castings, or your own custom blends.
Organic-onlyLog what you grow, when you harvest, and what worked. Add photos, tag events, and link entries to your beds and crops.
PremiumSimple Process
No agronomist required. GroundKit makes precision soil management and garden planning accessible to every grower.
Input your N, P, and K values from a soil test kit, or use the symptom guide if you don't have a test yet. GroundKit remembers everything across all your beds.
Receive precise NPK amendment recommendations for your specific crops and beds — drawn from a curated organic-only library. No synthetic fertilizers.
Use the seed planner, garden layout tool, and planting calendar together. Your growing season, fully organized and built around your soil and zone.
Local Extension Support
GroundKit connects you to your local Cooperative Extension agent for region-specific advice. Get expert guidance tailored to your county and climate.
67+ Crops
Hand-crafted watercolor art for every plant in our database.
Why GroundKit
No accounts. No ads. No selling your data. Just soil science and organic-first planning tools made for people who actually work the ground.
Your soil readings, beds, and garden plans stay on your phone. No account to create, no tracking, no data sold — ever.
Every amendment recommendation is drawn from a curated organic library — blood meal, kelp, rock phosphate, worm castings. No synthetic fertilizers.
Recommendations follow established soil science, and GroundKit links you to your local Cooperative Extension for region-specific guidance.
Built by Metabolic Meadows for home growers and small organic farms — designed around real beds, real seasons, and real soil tests.
New on the App Store · Free to download. No account required — enter a soil reading and get your first organic amendment plan in under a minute.
Simple Pricing
Start free. When you're ready to unlock everything, it's a single one-time purchase. No subscriptions. No auto-renewal. Ever.
Always free
Get started with the basics and try GroundKit before you upgrade.
one-time · forever
Pay once, grow forever. Every premium feature — plus every future update — unlocked for good.
One-time purchase. No subscriptions. No auto-renewal.
Download GroundKit free. Enter your first soil reading and get your personalized amendment plan in under 60 seconds.
