Know what a harvest actually cost you, in real currency, per gram.
Set your own electricity, water, and fertilizer prices once, and every completed cycle shows its actual cost — broken down by input, and converted to a cost-per-gram figure using that cycle's real harvest weight.
The problem
Most growers have a rough sense that a grow "costs something" in power and nutrients, but no actual number — and without a number, there's no way to compare whether one setup or one cycle was meaningfully cheaper or more efficient than another.
Why it's hard to solve alone
A cost-per-gram figure turns a vague sense of expense into something you can actually compare across cycles — did switching light fixtures or feeding schedules change what a gram actually cost you to grow?
How GrowScope helps
Enter your electricity price (per kWh), water price (per liter), and fertilizer price (per mL) once in Settings. When you archive a completed cycle, those prices — and the cycle's actual power draw, photoperiod, duration, water use, and fertilizer use — are snapshotted into that cycle's own record, so later price changes never rewrite historical costs. The result: a total cost and a cost-per-gram figure for every completed cycle, broken down into electricity, water, and fertilizer.
How it works
- Set your electricity, water, and fertilizer unit prices once in Settings under Cost of growing.
- As you grow, GrowScope already tracks power draw, photoperiod, watering, and feeding for the cycle.
- When you archive the finished cycle with a harvest report, its cost inputs are snapshotted at that moment — so a later price change doesn't retroactively alter past cycles.
- The Archive screen shows total cost and cost-per-gram for every completed cycle, broken down by electricity, water, and fertilizer.
What you get
You get an actual cost-per-gram figure for every finished cycle, calculated from your real prices and your real cycle data — not a guess.
Frequently asked questions
Does this calculate my ROI or profit from selling?
No — it calculates cost only: electricity, water, and fertilizer, converted to a total and a cost-per-gram figure. There's no market-price or revenue input, so it doesn't compute profit or return on investment.
Does it account for equipment cost or my time?
No — the three tracked inputs are electricity, water, and fertilizer prices. Equipment depreciation, rent, and labor aren't part of the calculation.
If I change my electricity price later, does it change past cycles' costs?
No — prices are snapshotted into each cycle's own record at the time you archive it, specifically so a later price change never rewrites historical numbers.
Is cost tracking a Pro feature?
No — it's free for every account, with no plan restriction.