Koini app icon
KoiniSeed library ledger
iPhone · Version 2.1

Koini: every seed envelope, written down at the counter

The offline ledger for seed library volunteers and swap hosts. Log donations and borrowings, test germination on intake, and see which lots run short before the queue does.

Download Koini
  • Offline at the counter
  • No account, no cloud
  • Data stays on your iPhone
  • Version 2.1

Swap days do not repeat. Set the ledger up before the first envelope arrives.

Pick your counter setup

Three ways to open your first table

Koini lets you search events by place, so a clear event name saves time. Choose a setup tag, copy it, and paste it into your next swap event title.

Weekly

Weekly seed counter

KOINI-WEEKLY-COUNTER
  • For library desks open every week
  • Log each lot in and lot out as a timed ledger row
  • Watch envelope stock update in real time
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Swap day
Best fit for a live event: queues build fast

Annual swap day

KOINI-SWAP-DAY
  • Flags a lot short when requests beat stock
  • Close the event, then read the full event summary
  • New donors are listed for you automatically
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Returns

Return table

KOINI-RETURN-TABLE
  • Built for borrowers bringing back saved seed
  • Record grower outcomes: sprouted, grew true, failed
  • Reliability scores for donors and varieties
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Setup tags are naming suggestions for your own event titles. They are not discount codes, and the store data lists no promotional offers. Check the App Store page for current pricing.

Under the hood

How the counter ledger works

Everything starts with a seed lot: a variety, a crop and a harvest year, such as Blue Lake bean 2026. Each lot gets a record with its donor, current stock, the germination result the donor stated, and your own tested result. You can photograph the packet label so the paper envelope and the record stay together.

At an event, every envelope that crosses the counter becomes a ledger row. A donation shows as a plus quantity, a borrowing as a minus, each stamped with the person, the time and the germination at giving. Rows are immutable entries you can remove only with the trash icon, so the counter record stays honest. Stock per lot updates as you log.

When a borrower asks for more than you hold, such as three envelopes with two in stock, Koini flags the shortage so you can mark the lot short. Later, grower reports feed reliability scores for donors and varieties, and a donor-by-variety matrix shows who supplies seed that actually sprouts.

Verified specifications
App nameKoini
Version2.1 (stability improvements and minor fixes)
PlatformiOS, iPhone
CategoryProductivity
ConnectivityFully offline, no internet required
AccountNone
Data storageOn your device, no cloud
NavigationEvents, Lots, People, Settings tabs
Store listing IDid6828429530
Size, price, age ratingShown on the App Store listing
Listing checked14.11.2026
Inside the envelope box

Six tools a seed counter actually needs

In

Timed ledger rows

Log a lot coming in or going out. Each row keeps the person, the time, a plus or minus quantity and germination at giving.

Intake

Germination check on arrival

Run an intake check and keep the history, for example 18 of 20 sprouted on paper towel over 7 days. The latest result is badged.

Short

Shortage flags

Demand beats stock and Koini says so. Mark the lot short and see the count on the event card and in the event summary.

Out

Lots list with real filters

Filter by In stock, Untested, crop or donor. Each lot card carries its harvest-year stamp, stock count and germination figure.

Donor

Reliability reports

Circle size shows envelopes given, fill shows the share that sprouted or grew true, and dashed circles mark fewer than 2 reports.

People

A directory of donors and borrowers

Search by name, filter by role, and see envelopes given and taken per person, plus any grower reports still outstanding.

From first envelope to harvest report

Running a swap day with Koini

Before doors open

  • Create a swap event and name it by place, so place search finds it later.
  • Add donors and borrowers to the People directory with a role.
  • Add lots with variety, crop, harvest year and a label photo.

At the table

  • Tap Log lot in for every donation and Log lot out for every borrowing.
  • Watch the Lots in, Lots out and Lots short tiles change as you work.
  • Remove a mistaken row with its trash icon.

Checking quality

  • Run an intake check and compare your tested germination with the donor's stated result.
  • Open a lot record to see its stock-flow chart by event.
  • Read the per-lot ledger with Sprouted and Grew true badges.

Closing the loop

  • Close the event and read the summary: lots received, lots given out, lots short, new donors.
  • Chase outstanding grower reports from Reports or the People list.
  • Use the ranking and matrix to decide whose seed to stock next season.

Put Koini on the counter before the next swap

Koini 2.1 for iPhone, Productivity category. Install it from the App Store, then log your first lot in without any account or connection.

Download Koini

Requires an iPhone. Works without internet. Price, size and age rating are shown on the App Store listing. This page contains no advertisements.