Hydroponic growing, without the guessing

Your lettuce is bolting and you don’t know why.
Is it the light, the heat, or both?

Probably the 16-hour photoperiod your kit shipped with — and HydroGardenAdvisor is the app that tells you so. Plan the setup before you start seeds, check in with a photo when something looks off, and find out at harvest what to change next cycle.

Get the app Free setup plans for every crop. No account required.
HydroGardenAdvisor's setup plan for Romaine lettuce, showing starting targets of a 14-hour photoperiod, 12-17 DLI, and 5.5-6.5 pH

Plan. Check. Harvest.

Three moments in every grow cycle where a straight answer matters. HydroGardenAdvisor covers all three.

Before · Free

Plan your setup

Pick the crop and your system type. The full setup plan appears instantly:

  • The photoperiod that actually fits your crop — most kits default to 16 hours, which bolts lettuce that wants 12–14
  • A nutrient mix scaled to your exact reservoir size, not “a capful or two”
  • Bolt-resistant cultivar picks where they matter
  • What to expect week to week, so a slow start doesn’t read as a failed one
  • Free pH and EC adjustment calculators — tell it your current and target reading, get the exact dose or dilution, no guessing which direction to correct
During · 3 free/mo, then Pro

Check mid-grow

Snap a photo of your plants. You get a diagnosis, not a shrug:

  • Tip burn, light burn, etiolation, early bolt, root rot, deficiencies — named, not guessed at
  • Priority-ordered fixes, not a wall of possibilities
  • Crop-aware — a basil read and a lettuce read aren’t the same rubric
After · 3 free/mo, then Pro

Harvest and carry forward

Log the result. HydroGardenAdvisor tells you what to change next cycle:

  • What worked, what to adjust — light, nutrients, timing
  • A real journal entry for this grow, not a note you'll forget
  • Start the next cycle already carrying the lesson forward

Built for the crops you actually grow

Every crop gets its own photoperiod, nutrient targets, and failure-mode vocabulary — not one generic formula stretched across everything green.

Leafy greens & herbs

Lettuce, greens & herbs

ButterheadRomaineLoose-leafMulti-leaf CrispheadBatavianOakleafLollo KaleSpinachArugulaSwiss ChardBok Choy BasilCilantroParsleyMintChives DillOreganoThymeRosemary
Fruiting crops

Longer-cycle growing

TomatoPepperStrawberryCucumber

Multi-stage nutrient management, pollination reminders, and stage detection — the setup, check, and harvest loop covers the full season, not just the seedling stretch.

Pricing

Setup plans are free and unlimited, always. Photo diagnoses and harvest assessments are free 3 times a month each, up to 20 of each in total; Pro makes both unlimited.

Free

$0

No account required

  • Unlimited setup plans, every crop
  • 3 photo diagnoses a month (up to 20 total)
  • 3 harvest assessments a month (up to 20 total)
  • Unlimited journal notes
  • No ads, ever

Pro

$39.99/year

or $4.99/month — less than a bag of nutrients

  • Unlimited photo diagnoses, every crop
  • Unlimited harvest assessments
  • Everything in Free

Already using Claude, ChatGPT, or Grok?

Connect your HydroGardenAdvisor account to Claude, ChatGPT, or Grok and you can plan a setup, check your plants from a photo, or log a harvest without leaving the chat. Use your agent to update your account and navigate the app — it knows where everything is. It's the same account and the same garden as the app, so anything you do in one shows up in the other.

How it works in Claude → How it works in ChatGPT → How it works in Grok →

Get HydroGardenAdvisor

Now on the App Store and Google Play.

Download on the App Store Get it on Google Play