§ Compare · Checked Oct 2026
If you've used a garden calculator online, you may have seen HarvestMath. Its Garden app plans a food garden from a ZIP code, down to the drip parts and the shopping list, and runs offline in your browser. We built Ezina for the whole garden, indoor and out, food included. Here is how the two compare on what they do, what they cost, and what they do with your data.
We make Ezina, so read this knowing that. Every HarvestMath fact below says where we found it.
§ 010 · At a glance
 Ezina |
 HarvestMathGarden |
||
|---|---|---|---|
| Care | 5 of 5 | 2 of 5 | See the details |
| Identify and fix | 4 of 5 | 1 of 5 · 1 partly | See the details |
| Garden and outdoors | 5 of 5 | 3 of 5 · 1 partly | See the details |
| Log, calendar and impact | 5 of 5 | 1 of 5 · 1 partly | See the details |
| Privacy and data | 5 of 5 | 5 of 5 | See the details |
| Price and access | 2 of 5 · 1 partly | 2 of 5 · 3 partly | See the details |
| In all | 26 of 30 · 1 partly | 14 of 30 · 6 partly |
Five direct comparisons per area, one dot each, taken from the detailed tables below. Ezina's plan is compared with HarvestMath Garden. We chose the rows, and each one says where we checked it.
§ 020 · Which one
§ 030 · Features
| Ezina |
HarvestMath |
|
|---|---|---|
| Care | ||
| Watering | YesFrom the local forecast, the heat and how the plant is planted. Outdoor beds get an amount in gallons; rain lowers it. | YesWorked out in gallons and minutes for each bed, and the U.S. National Weather Service forecast adjusts the Today view, if you switch it on. |
| Other reminders | YesFertilizing, and treatment steps that repeat on the interval their source gives. | YesFeeding, planting and every other job on a date, sent to your own calendar with a weekly garden check. |
| Indoor rooms | YesSet a room's temperature and humidity once; every plant in it uses them. | Not foundIts Houseplant Care App sets light one plant at a time; we found no rooms. |
| Light meter | Yes | Not found |
| Share care | YesSend a link. The plant sitter can log waterings without the app or an account. | Not found |
| Identify and fix | ||
| Plant ID | YesTwo services, Plant.id and Pl@ntNet, blended, with the match percentage shown. 1 credit per check; Early Access includes 50 a month. | No |
| Insect ID | YesMore than 14,000 insects and other invertebrates. | No |
| Disease and pest treatment | Yes300+ plans. Every step cites a university extension, a U.S. agency or the RHS, least invasive first. | PartlyIts Plant Doctor asks about the symptoms and gives first steps, with no photo diagnosis. You can attach your own photos to a case. |
| Care advice sources | CitedExtension services, USDA and peer-reviewed research, attached to the advice. | CitedThe Plant Doctor links each problem to a university extension page, and its site lists its sources. |
| Plant experts | NoQuestions go to us by email, and bug reports from the app. | Not found |
| Garden and outdoors | ||
| Outdoor plants | YesBeds, in-ground plants and containers outside. | YesVegetables, herbs and flowers in beds and pots, plus lawn and tree apps in the bundle. The demo offers 22 starter crops. |
| What to plant when | YesA planting calendar from your frost dates. | YesPlanting dates from the nearest NOAA weather station to your ZIP code. |
| Garden planning | YesDig maps your lot from an address: trees from a laser survey, sun for every daylight hour, frost pockets and runoff. Then it lays out beds that fit. | PartlyA square-by-square layout with companions together and tall crops to the north. You size each bed and set its sun by hand; there is no map of your yard. |
| Native and invasive | YesNative status by county, and invasive status from 43 contiguous states' lists. | Not found |
| Hardiness zone | YesYour zone is on the planting calendar. | YesTap your zone, or look it up with its zone finder. |
| Log, calendar and impact | ||
| Notes and photos | YesThe Log: entries with photos, notes and tags. Waterings, treatments and plantings file themselves. | PartlyHarvest records for each crop and a history of every season; photos and notes go on the Plant Doctor's cases. |
| Wildlife and species list | YesTag the birds, pollinators and insects you see. The Life list counts every species. | Not found |
| Calendar | YesA week view of planting, watering, treatment and frost dates. | YesA Today view with the reason for every job, and a calendar file for your phone's calendar. |
| Ecological impact | YesA planned bed shows the insects and birds its plants are recorded supporting. | Not found |
| Community | YesProfiles, a feed and comments. Photos are checked before they publish. | Not found |
§ 040 · Values
| Ezina |
HarvestMath |
|
|---|---|---|
| Privacy and data | ||
| Ads in the app | None, everA written commitment, including no sponsored plants in results. | None shownThe app runs offline. Its site's About page says HarvestMath is supported by ads and affiliate links; we saw no ads on the pages we read. |
| Tracking | None for adsAnalytics can be turned off. Every outside service and what it receives is listed on our Transparency Promise. | None for adsThe app uploads nothing. Its privacy policy says the site uses Google Analytics only, with no advertising cookies or remarketing tags. |
| Doesn’t sell your data | NeverA written commitment, with no exception for anonymized or aggregated data. | NeverIts privacy policy says it never sells, rents or shares your email, and the garden itself never leaves your device. |
| Export your data | Yes, from SettingsPlants, care history and your original photos. | Backup fileSave a backup file from the More tab and restore it on another device. |
| Delete your account | In the app | No accountNothing is stored online. If you emailed it, it removes your address on request within 30 days. |
| Price and access | ||
| Lower price | No$6.99 a month or $70 a year at launch. Early Access seats keep $4.99 or $50 for good. Educators and students: $3 or $30, on request. | Yes$49 once, with no subscription, including its lawn, tree, houseplant, hydroponics and Plant Doctor apps. Single apps are $12 to $19. |
| Free plan | NoNone after the trial. You pay to continue, or download your data. | Demo onlyThe demo is the real app, capped to 2 beds, and saves nothing. Its calculators are free. |
| Where | Contiguous U.S.iPhone and Android, in English. | U.S. ZIP codesAny phone, tablet or computer, in a browser, in English. Frost dates and the forecast come from U.S. sources. |
| Price changes | Opt-in only30 days' notice, and we never renew you onto a new price without your yes. | Pay onceNo subscription, so nothing renews. |
| Free trial | 14 days, no cardIt ends without charging you. Then you pay to continue, or download your data. | DemoA free demo capped to 2 beds, with no card. Nothing you enter is saved, and there are no refunds for a change of mind. |
| Also compared, not scored | ||
| Missed care | No day countA pill names where a plant stands: Water soon, Needs water or Overdue. | Not checked |
| Funding | Paid for by subscribers. No outside investment, by commitment. | Run by a small team, per its About page, and paid for by app sales, ads and affiliate links. Owner not named. |
§ 050 · Our edge
Give Dig an address and it pulls your lot line and your house, finds every tree around it from a laser survey, and casts their shade for every daylight hour. HarvestMath's beds are sized by hand, and you set each one's sun yourself.
From 1-meter elevation data, Dig shows where cold air settles and where rain runs and gathers, so beds go where they'll do well. HarvestMath dates planting from the nearest NOAA station, not the spot in your yard.
Plants, more than 14,000 insects, and plant problems from a photo, with a cited treatment plan. HarvestMath's Plant Doctor works from questions, with no photo identification.
Native status by county, and invasive status from 43 contiguous states' lists. HarvestMath has none we could find.
Tag the birds, pollinators and insects you see, count every species in the Life list, and see the wildlife a planned bed supports. HarvestMath has neither.
Send a link, and whoever's watering sees what's due and logs it without an account. HarvestMath has no way to share care we could find.
§ 060 · Fair's fair
$49 once, with no subscription, less than one year of Ezina at launch. Lawn, tree, houseplant and hydroponics apps are included.
No account, and nothing is uploaded. It works offline as one file you keep.
Seeds, soil, fertilizer, drip parts and supports in one list, in amounts you can buy.
Track the harvest of each crop, and its review suggests next year’s amounts and rotates your crops.
§ 070 · Questions
No. HarvestMath Garden is $49 once, with no subscription, and its free demo is capped to 2 beds. Ezina is $70 a year at launch ($50 for Early Access seats), after a 14-day trial with no card.
Neither shows ads in the app. Ezina's Transparency Promise commits to never running them. HarvestMath's About page says its site is supported by ads and affiliate links, though we saw no ads on the pages we read.
Not automatically. HarvestMath saves a backup file, but Ezina can't read it, so plants are added to Ezina one at a time or by photo identification.
Ezina is in Early Access on iPhone and Android in the contiguous U.S. HarvestMath Garden runs in a browser on Windows, Mac, iPhone, Android and tablets, in English. Its frost dates and forecast come from U.S. sources.
Apps change. Email [email protected] and we'll check it and date the fix below.