Real captures of the live app. Nothing here is a mockup.
- Instant download
- No internet required
- Works on any device
- Yours to keep
The Houseplant Care App
Water, feed and repot each houseplant on its own rhythm, with the right pot and mix.
- 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.
Its own rhythm
Watering checks that learn each plant from your answers.
Pet safety
Every plant marked safe or toxic, from the ASPCA list.
Works offline
Use it anywhere. Nothing is uploaded or stored online.
One-time purchase
No subscriptions. No recurring fees.
About this app
The Houseplant Care App keeps each plant on its own rhythm. It asks you to check the soil rather than water on a fixed day, and learns how fast each plant dries out from your answers. Feeding happens only in the growing season, and pauses after repotting.
Each spring it runs a repot check and gives you the next pot size and the exact mix in quarts. It's a single HTML file you own: no subscription, no account, and it works offline.
What it does
- Pet safety for every plant (ASPCA)
- Add any plant that isn't on the list
- 30 common houseplants built in
- Watering checks that learn each plant's rhythm from your answers
- Feeding only in the growing season, paused after repotting
- Salt flushes and top-dressing for big plants
- A spring repot check with the next pot size and the exact mix in quarts
- A care log
- Calendar reminders
- Works offline; your data stays on your device
What's included
- 1 offline HTML file you keep
- Installable copy for your phone
- Calendar file with reminders
- 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 3 plants, 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 this the old Plant Care app? +
No. This is a new, simpler app that replaces it: the same one-time purchase, a lower price, and every plant on its own watering rhythm.
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.