Shellfish farm lines on the water at Sector Pullao, Chiloé, Chile

New Zealand made · Mussels · Oysters · Seaweed

Every line accounted for.

Mussel App runs the whole operation from the deck. Farms, lines, seedings, assessments, harvests and costs in one record, then it forecasts what is coming from your own farm history. Works with no signal and syncs when you are back in coverage.

$1 USDper line, per month
$80 minimum per account. Asterisk: rafts and other structures are counted differently. See the pricing section.
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Sector Pullao, Chiloé, Chile

OfflineFull offline mode with pending-sync alerts
SpeciesMussels, oysters and seaweed, modelled separately
DevicesiOS, Android and desktop
LanguageEnglish and Spanish
OnboardingSetup and crew training included, not a separate project
Weights and lengths shown in

The Skipper App

The day runs from the deck, not the desk.

Farms, lines, tasks, seedings and harvests, with metres tracked on screen so crews can check progress without switching views.

  • Point the camera at the plate and Automatic Photo Assessment reads the mussel size. No measuring by eye, no typing. Manual entry is still there if you want it.
  • Voice commands for notes, so the log gets written while your hands are busy.
  • Full offline mode with pending-sync notifications, so you always know what is still waiting to upload.
  • Boat reference on every action, so you know which vessel did what.
See it on your farm →
The Mussel App Skipper App shown on a phone

One app, end to end

Stop stitching four systems together.

GPS, stock management, farm management and task management in separate apps means the same job gets typed in three times and still does not reconcile. Mussel App carries biosecurity, insurance reporting, stock movement and profitability in one record.

Harvested weight and processed weight are tracked separately in the same harvest record. Set your own price per processed kg, harvested, brokens, smalls, biofouling or your own categories, with an effective date and full price history. Oysters priced per processed dozen. Budget and income forms show $/bag and $/kg side by side.

Diagram of how Mussel App connects farm data From sea to sale

What it covers

Built around how a shellfish farm actually runs.

These are the features that landed in the last year. Every month there are more, and most of them started as something a farmer asked for.

Inventory tracking screen in Mussel App
Inventory

Every longline, cage and float on the books

Track submerged equipment and GPS it. Fewer losses, and a much easier conversation with your insurer and your bank when they ask what is in the water.

Lifecycle monitoring screen in Mussel App
Lifecycle

Seeding to harvest, nothing detached

Every seeding, assessment, maintenance record and harvest stays linked. Delete warnings list what is attached before anything goes. Archive inactive farms and lines without losing their history.

Custom report builder in Mussel App
Reports

Reports built your way

Keep the columns you need, drop the ones you do not, save the layout online, as PDF or Excel. Schedule them to arrive by email and download a full backup of your data any time.

Processing and profitability screen in Mussel App
Profitability

What came off the water vs what was left

Harvested and processed weight tracked separately, priced per processed kg or dozen with effective dates and price history. Reports include performance, financial detail and a total of empty versus full lines.

Task management and calendar in Mussel App
Crew

Tasks, timesheets and who did what

Farm and line shown on every calendar task. Timesheets searchable by farm number, line, vessel or client, with comment templates and batch numbers. It remembers your last selection so nobody re-picks the same activity all day.

Environmental monitoring in Mussel App
Environment

Weather tied to the crop, not just the map

Weather data is joined to the lifecycle of your mussels, oysters and seaweed. Connect or import from your own sensors to sharpen forecasting and biofouling control.

Mussel App desktop farm view Desktop view

Oysters too

Oyster management, modelled on its own terms.

Oysters do not grow like mussels, so they are not forecast like mussels. Racks, baskets and lines, priced per processed dozen, with the same lifecycle, reporting and analytics behind them.

Read about the oyster system ↗

Spat Weather Analytics

Your farm's own data.
Not industry averages.

Two years in the making, and as far as we know the first tool that runs this kind of live analysis on a single farm's own records. It reads your seedings, assessments and harvests, cross-references the weather your farm was actually exposed to during those periods, and surfaces the patterns already sitting in your history.

Spat Weather Analytics dashboard in Mussel App

Scores are adjusted for farm, line, season and weather, so you are comparing spat on equal terms. Every insight tells you how many samples it is based on, so you know the difference between a lucky one-off and a real signal.

One catch worth knowing. We cannot go back in time to collect weather. Collection starts the day you join, and that is data nobody else has. Farmers with six months or more of records see meaningful patterns straight away.

Automatic Photo Assessment

The camera does the measuring

Point the Skipper App at the plate and it reads the size. No calipers, no typing, no transcription errors at the end of a long day.

AI Quality Detection

Catches what a manual check misses

Quality issues get flagged automatically as records come in, rather than surfacing weeks later in a report nobody read.

Ask it directly

Connect it to ChatGPT or Claude

Ask what is on Line 12 right now, or dictate today's assessment and have it recorded. It confirms before saving, and every entry passes the same checks as the app.

Data quality flags

What goes in is what comes out

A dedicated page scans your records for anything inconsistent, like an assessment dated before its seeding or a final harvest with no amount, so the analytics are not learning from bad data.

Harvest forecasts

Dates, weight, quality and reseeding

Forecast from your own records, with mussels and oysters modelled separately. Stage Reseeding shows which lines are ready to move up, with a confidence score that climbs as your history grows.

ML Harvest Log

It logs its own misses

When a forecast is off by two weeks or more it gets recorded and used to improve the next one. Not a list of failures, just how the model gets sharper on your farm.

In testing now

Weather warnings that know when to stay quiet.

Not another forecast. Instead of "gusts to 38 knots Saturday", you get: gale conditions from 3am to 2pm on Farm 12, against the 34-knot limit you set, secure loose gear Friday. It also tells you which days are workable, because a system that only brings bad news gets muted, and then the warning that matters never arrives.

How it was built ↗
Farm specific weather warning interface

Meet Shelly

Shelly is a real person on our team, not a chatbot.

Call or message at the end of the day and she logs it into your system properly. She will get on the phone with your skippers to fill in what is missing, and explain how your records are set up.

You have been on the water since before dawn. The data entry can be someone else's job.

Talk to us about Shelly →
Video call between the Mussel App team and a shellfish farmer
"Ready to harvest lines, empty lines, assessments, at the click of a button is fantastic."

Hika's team have run the app across day to day farm management for a year: the traffic-light farm map with add and subtract floats, the calendar and task functions, printed or big-screen farm overviews for the ops crew, and line assessments captured on an iPhone or iPad with real time photos.

Hika RountreeSouth Coast Mariculture

Pricing

$1
per line · per month · USD

$80 USD minimum per account, per month

One rate, counted the way your farm is actually laid out. The asterisk matters, because not every structure is a line.

A raft carries many droppers, so it is counted as several line equivalents rather than one. Oyster racks, baskets and seaweed lines are counted by structure too. Small farms land on the $80 account minimum, which covers the platform and your onboarding either way.

The estimator below shows you roughly where you would sit.

Estimate your monthly figure

Mussel longlines Backbone lines, any dropper count · $1.00 each
Oyster lines, racks or baskets Counted per structure · $1.00 each
Seaweed lines Counted per line · $1.00 each
Rafts This is the asterisk. A raft carries many droppers, so it is estimated here at 10 line equivalents · $10.00 each
Estimated monthly
$120USD
Around $1,440 USD a year
Above the $80 account minimum
120 line equivalents
Longline Oyster Seaweed Raft
Estimate only — this is not a quote

These numbers are indicative and are here to give you a rough sense of scale. They are not an offer, a quote or a contract, and nothing here forms a binding price.

Figures are in US dollars and include the $80 per account, per month minimum. Real pricing depends on your structure types and sizes, how rafts and racks are counted on your farm, your region and your account setup. The raft factor above is an illustrative default, not your farm's number. Your actual figure is worked out with you on the demo call and confirmed in writing before you start.

Included, not quoted separately

We set the account up with you.

Nobody hands you a login and wishes you luck. Onboarding is part of the price, whether you run 40 lines or 4,000.

  • Your farms, lines and existing history imported for you
  • Account and structure configured to match how your farm is actually laid out
  • Crew and skipper training, on the boat or over video, in English or Spanish

Also on the platform

Runs offlineFull offline mode with pending-sync notifications on every device.
Unlimited historyArchive farms and lines without losing what happened on them.
Your own reportsCustom templates, scheduled email delivery, PDF, Excel and full data backup.
Analytics on your dataSpat Weather Analytics, harvest forecasts and stage reseeding.
Get a real number for my farm → Your structure counts carry over to the form.

From the log

What we have been building.

Development notes written for farmers, not investors.

Request a demo

If you only download the app, you will not get the full experience.

Tell us where you farm and what you grow. We will set up a call, walk you through the app against your own operation, and give you a real price for your structures.

  • A working session, not a sales pitch
  • In English or Spanish, whichever suits your crew
  • Different region or a species other than mussels? Put it in the comments
  • Onboarding is included: we set the account up, import your farms and lines, and train the crew
Download on the App Store Get it on Google Play
From your estimate: 120 line equivalents, around $120 USD a month
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