A foraging companion

Find.
Identify.
Save.

Grzybiarz is a mobile app for mushroom foragers. Its on-device AI helps you spot fruiting bodies in the leaf litter and suggests a species from a photo, and the app keeps a private map of your finds. Everything runs on your phone and works fully offline in the forest without signal.

Species atlas
BlewitLepista nuda
conditionally edible
BlewitLepista nuda
Photo: (c) Bobo-X, some rights reserved (CC BY)
Habitat
deciduous forests
mixed forests
parks, treelines
Season
from September to December
Tricholomataceae
5–15 cm
Season
At its peakThe peak lasts until mid-November and the season usually until early December.
Today · 29 Oct–4 Nov100% of peak
how often reportedpeak
Season
Sep–Dec
Peak
Oct–Nov
Reports
121from Poland, few
Curve from 121 observations (iNaturalist, Poland), smoothed week by week. It shows when foragers most often report the species, not how much of it grows.
Key features
Cap, gills and stem in lilac-violet shades, fading to beige with age. Stem fibrous, without a ring; fruity, perfumed smell. Edible only after thorough heat treatment; raw, it causes stomach complaints.
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Grzybiarz
Grzybiarz is a foraging assistant; the decision to harvest is yours.
© 2026 GrzybiarzVersion 0.0.1 · f66d236
Gąsówka fioletowawa (Lepista nuda) — Conditional · Grzybiarz