Every jar has a story.
Now it has a page.

Petri2Pin tracks a culture's full lineage — genetics, inoculation, spawn, fruiting, harvest — with a photo at every stage. Print a label, stick it on the jar, and that QR code is the jar's whole life.

QR code linking to Petri2Pin
↑ scan it, or click

Pleurotus ostreatus

Blue Oyster
Fruiting
day 1 · inoculated
day 9 · fully colonized
day 14 · first pins
click the card again to flip it back
the lineage

One continuous thread, start to finish

Every stage is its own record, linked to the one before it — so a fruiting tub doesn't just show its own history, it shows everything it came from.

01Genetics

The original sample — a print, a clone, a spore vial. Kept private; it's the root everything else traces back to.

02Inoculation

Agar, spore syringe, spore print, or liquid culture — started from your genetics, or propagated from an earlier inoculation.

03Spawn

Grain colonized from an inoculation. Log temp, humidity, and photos while it works.

04Fruiting

Spawn transferred to a bulk substrate and chamber. Pins, first flush, whatever comes next — it's all one page.

05Flush

Weigh the harvest, log the flush number, and the yield rolls up automatically.

what you get

Built for how a cultivation actually goes

Not a spreadsheet, not a generic notes app — fields and structure that match the actual process.

📷

A photo at every stage

Not just the harvest shot — log conditions and pictures the moment you notice something, at any point in the chain.

🔤

Species and strains, kept consistent

Autocomplete against a shared, moderated list — instead of "Golden Teacher," "golden teacher," and "GT" all being different entries.

🔒

Private by default

Every inoculation, spawn, and fruiting is shareable on its own — nothing goes public unless you choose it, stage by stage.

the label

Print it. Stick it. Scan it.

Every record has a QR code built in. Print a label for the physical jar or tub, and anyone who scans it — including future you — lands right back on its page.

Pleurotus ostreatus

Grain spawn · started Jun 2
Sample QR label
petri2pin.app/spawns/…
printed Jul 14, 2026
founding members — capped at 100

The first 100 get it free. Forever.

Petri2Pin is brand new, and the people who join now are the reason it'll be worth joining later. In exchange, the first 100 accounts get lifetime access — split into two waves.

01–25

The Founding 25

Full lifetime access, no exceptions — including anything added later. You're early enough that this is genuinely on the house.

26–100

The Founding 75

Lifetime access to everything Petri2Pin does today — the full lineage tracker, photo logging, QR labels, Community sharing. Future premium extras, if any, may be separate; the core tracker is yours for good.

Claim your spot

Start your first culture

Free to use. Your data stays private until you decide otherwise.

Open Petri2Pin