Real captures of the live app. Nothing here is a mockup.

The Plant Doctor

$12.00 USD One time purchase • No subscription

Answer a few questions, get the likely cause, fix one thing, and check back.

Choose what to buy
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  • Instant download
  • No internet required
  • Works on any device
  • Yours to keep

Not sure yet? Try the free demo →

Secure checkout by PayPal or Dodo Payments. No refunds for a change of mind.

Likely cause first

Causes ranked cheapest and most common first.

One fix at a time

Change one thing, then check back when it says.

Works offline

Use it in the garden. Nothing is uploaded or stored online.

One-time purchase

No subscriptions. No recurring fees.

About this app

The Plant Doctor asks a few questions about what you see and ranks the likely causes, cheapest and most common first. It tells you the one thing to change and when to look again, so you know whether it worked.

Track a case and it moves on to the next suspect if the fix didn't work. It's a single HTML file you own: no subscription, no account, and it works offline.

What it does

  • 8 symptom groups for vegetables, herbs and houseplants
  • Causes ranked cheapest and most common first
  • The one thing to change, and when to look again
  • Case tracking that moves to the next suspect if the fix didn't work
  • Photos and a printable problem report for your extension office
  • "This came back" warnings
  • Calendar reminders
  • Works offline; your data stays on your device

What's included

  • 1 offline HTML file you keep
  • Installable copy for your phone
  • Printable problem report
  • Backup and restore to a file
  • Lifetime access to this version

File type

Single HTML file

Works on

Windows, Mac, iPhone, Android

iPad, tablets

Delivery

Instant download after purchase

No shipping required

Frequently asked questions

Can I try it before I buy?

Yes. The free demo is the real app, not a video or a mockup. It's capped to 1 tracked case (diagnosis is unlimited), and nothing you enter is saved: closing the tab clears it. Calendar downloads, backups and printing are in the full version. Buy to remove the cap and keep what you build.

Is it a replacement for a plant lab?

No. It covers the common problems and points you to the likely cause fast. When it's something it can't settle, it helps you put together a problem report with photos for your county extension office.

Is this a subscription?

$12.00, once. No account is created, so there is nothing to cancel, and no recurring charge, ever.

What exactly do I get?

Two things from the same purchase: a single HTML file you download and own, and an installable copy of the same app for your phone's home screen. Either one works fully offline after the first load. The download link is on the page you land on after paying, and in your receipt email.

Does it work without internet?

Yes, after the first load. Everything works with no connection: there's nothing on the other end for it to talk to.

Where does my data go?

Nowhere. It stays on your device, in the browser you use the app in. HarvestMath doesn't run a server that sees it. To move to another phone or computer, save a backup file from the More tab and restore it there.

What about HarvestMath Garden?

HarvestMath Garden plans your whole garden in one place, and Garden buyers get this app too, plus 4 more apps. Pick it above the payment buttons to buy it instead, for $49. Already bought this app? What you paid counts toward it: the Garden costs you $37 (never less than $30), and your receipt email has an upgrade link with your order filled in.

Is there a refund?

No refunds for a change of mind: the free demo is the real app (just capped, and it doesn't save), so you can see exactly how it works before you pay. If something is broken, or you were charged by mistake, email hello@harvestmath.com and we'll make it right.