Siy
Your smart garden journal

Track your garden with confidence

Log every planting, treatment and harvest. Get reminders before things need doing. Diagnose sick plants from a photo. Everything from one season carries into the next.

Download on the App StoreGet it on Google Play
  • Free to download
  • iOS & Android
  • No ads or tracking
The Siy home screen, showing today's weather with gardening advice, the tasks due today and your plots

The problem

A growing season is easy to lose track of

A season is long, and the details that decide your harvest are the first things to slip.

Missed treatments

Forgot when you last fertilised? Plants suffer and yields drop when care is inconsistent.

Lost records

Paper notes disappear. Spreadsheets get messy. You can't remember what worked last season.

No insights

Without data you repeat mistakes, with no way to compare varieties or improve yields.

The solution

One journal for the whole growing year

Siy keeps the record for you — from the first seed to the last basket — so nothing depends on remembering.

Never forget a treatment

Set a reminder when you log the work. Siy notifies you on the day, straight from your phone.

Every record in one place

A single timeline of plantings, treatments and harvests — filterable by plot, exportable whenever you want.

Learn from last season

Compare varieties and yields year over year, and stop guessing at what actually worked.

Recent activity

Planted Tomatoes

Cherry variety · Greenhouse · Apr 21

Applied Fertilizer

NPK 20-20-20 · Garden Bed 1 · Apr 20

Harvested Cucumbers

3.2 kg · Greenhouse · Apr 19

How it works

Three steps, then it maintains itself

Set up once at the start of the season, and the journal maintains itself from there.

1

Create plots

Add your garden beds, greenhouses or growing areas and give each one a name and a colour.

2

Track actions

Log plantings, treatments and harvests as you go. Attach notes and set a reminder in the same step.

3

Get insights

Review the full history, export it wherever you like, and plan the next season from real records.

Features

Everything the season needs

Pick a feature to see it in the app — real screens, not mockups.

  1. Enter a crop and get a full care schedule — watering, feeding and treatments — with the reminders set for you.

    • Pick from a catalog of over 100 crops
    • Composting, transplanting and watering are scheduled for you
    • Follow growth progress and the estimated harvest date
    A garlic planting with a care schedule generated for it: add compost, transplant and water, each on its own date

  2. Schedule watering, feeding and treatments. Notifications fire on your device — no push server involved.

    • A calendar marks every task, treatment and harvest
    • See what is due today across all your plots
    • Get a notification when something is due
    The Reminders screen, with a monthly calendar of tasks, treatments and harvests and today's watering task

  3. Record every fertiliser, spray and product with dose and date, so the history is auditable.

    • Log the treatment, product and date in seconds
    • Keep the dose and weather conditions in the notes
    • Set a reminder for the next application
    The Add Treatment form, filled in for a copper spray with Bordeaux mixture, its date and the dose used

  4. Log quantity, unit and a short review per harvest, and see which varieties actually earn their space.

    • Weigh it in g, kg, oz or lb, or count pieces
    • Leave a note on taste and quality for next season
    • See the total harvested for every planting
    The Record Harvest form, logging 4 kg of cherry tomatoes with a short review

  5. One timeline across every plot and season, filterable by area and searchable at any time.

    • Every planting has its own timeline, as a list or a calendar
    • Log rain and see it next to your work
    • Previous seasons stay available to compare
    A cherry tomato planting with its growth progress, expected harvest date, total harvested and a dated timeline of completed tasks and treatments

  6. Invite family or a co-gardener with a code. Everyone shares one garden and can add plots, plantings, treatments and harvests.

    • Invite with a code or a link
    • See who added and who completed each entry
    • The group owner decides who is in
    The Family Sharing screen, showing three family members who share one garden and a button to invite another
The AI Plant Diagnosis screen, offering to take a photo or choose one from the gallery, with tips on getting a clear shot

AI plant diagnosis

Premium

Point your camera at a sick plant

Yellowing leaves, spots, wilting — describing it to a search engine rarely helps. Show it to Siy instead and get a specific answer while you're still standing in the bed.

Photograph the problem

Take a shot of the affected leaf, stem or fruit — or pick one from your gallery.

Get an answer in seconds

Diseases, nutrient deficiencies and pests identified, with severity and what to do next.

Saved to your planting

The treatment plan is saved to the planting it's for, with reminders for each step.

Included with premium, after your 7-day free trial. Photos are processed by OpenAI to produce the diagnosis. Details in our privacy policy.

Start your garden journal today

Siy is free to download on iPhone and Android. Set up your first plot in under a minute.

Download on the App StoreGet it on Google Play
  • Free to download
  • 7-day free trial on premium
  • Cancel anytime in the App Store or Google Play