Real captures of the live app. Nothing here is a mockup.
- Instant download
- No internet required
- Works on any device
- Yours to keep
The Season Planner
Every seed, every date, every square: your whole season, worked out once.
- 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.
Every date for you
Start, harden off, plant out and sow, counted from your frost dates.
29 crops
Garlic, potatoes, melons, herbs and strawberries included.
Works offline
Use it in the garden. Nothing is uploaded or stored online.
One-time purchase
No subscriptions. No recurring fees.
About this planner
Tell the Season Planner your ZIP code and what you're growing, and it works out every date of the season: when to start seeds indoors, harden them off, plant out, sow outdoors, sow again, and start the fall garden. Frost dates come from the nearest NOAA weather station, the same normals our Frost Date Calculator uses.
Plan raised beds by the square foot and in-ground rows by the foot. It's a single HTML file you own: no subscription, no account, and it works offline on your computer or phone.
What it does
- Frost dates from your ZIP or zone
- Raised beds by the square foot and rows by the foot
- Start-indoors, harden-off, plant-out and sow dates for 29 crops (garlic, potatoes, melons, herbs and strawberries included)
- Frost-free zones too
- Re-sowing reminders and a fall garden
- A seed shopping list
- A "did it come up?" check after every sowing
- Calendar download
- 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 every date
- 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 bed and 6 crops, 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.
Where do the frost dates come from? +
NOAA's 1991-2020 climate normals for the weather station nearest your ZIP code, the same data the site's Frost Date Calculator uses. You can plan from the median date or the safer date (1 year in 10 has a frost after it), or type in your own dates.
Is this a subscription? +
$19.00, 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, with this app's engine inside it, plus 5 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 $30 (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.