Free · private · offline · no account required
Good cultivation is a feedback loop: change one variable, measure the result, keep what works. But that loop only exists if you write things down. ShroomLog is a cultivation tracker that captures the numbers that actually move your yield — how long colonization took, when pins appeared, how much each flush weighed, and where contamination crept in — across every grow you run.
Open the tracker →"It did pretty well" is not data. Recording harvest weight per flush is the single highest-value habit a home cultivator can build — it tells you which substrate, species and conditions are worth repeating. ShroomLog makes weighing a flush a five-second log entry, then does the math for you so the comparison is there whenever you want it.
Every contaminated tub is information. Track the contamination type and ShroomLog builds a picture of your clean rate and your most common failure modes over time, so you can adjust technique — better sterilization, fresh air exchange, drier substrate — with evidence behind the change instead of folklore.
ShroomLog runs entirely in your browser. Your grows are stored locally, never uploaded, and the app works with no internet connection — ideal for a basement or grow tent. Unlimited grows, full stage tracking, yield totals and complete history are free. A one-time Pro unlock adds CSV export, per-species yield statistics, deeper contamination analysis and side-by-side grow comparison for the data-driven grower.
Track your next grow →