The cannabis grow journal for iOS and Android Track. Learn. Grow.

Log every watering, feeding and training session in seconds. Your data becomes charts, your charts become decisions, and your decisions become better harvests.

Download on theApp Store Get it onGoogle Play

Free to download · iOS & Android · English & Deutsch

PlantOverview

From Seedling To Harvest

Every plant moves through the same four stages. How long each one lasts is up to you. GrowDat shows where you stand and keeps every stage on record for your next run.

Seedling

Germination, first light, first leaves. GrowDat counts from day 1 and reminds you of the actions that matter.

VPD 0.4–0.8 kPa

Vegetation

Roots and leaves. Light schedule, training and feeding in view while your plant builds its frame.

VPD 0.8–1.2 kPa

Flower

First the stretch, then the payoff. Humidity turns critical, so GrowDat charts your VPD.

VPD 1.2–1.6 kPa

Harvest

Log wet and dry weight, close the grow and carry every number into your next run.

Wet & dry weight

Your Whole Grow, In One Place

Built for the tent, not the lab. These are the screens you use every day.

PlantOverview

Your grow at a glance

Current stage, week calendar, daily goal and your latest entries, all on one screen.

GrowDat overview screen: plant Bobby Bud in vegetation with week calendar, daily goal and recent entries

PlantInsights

Data that tells you something

See how active you were each week and pin your key readings as favorites. With Premium you compare two readings in one chart, like temperature and humidity.

GrowDat insights screen: entries, actions per week as a chart and parameter comparison

InsightsFertilizer

Every reading in detail

For fertilizer, that means mix, interval and history. Temperature and humidity are split into day and night.

GrowDat fertilizer screen: last feeding with the mix as a ring chart and the interval

PlantHarvest

To harvest and beyond

Stage overview, wet and dry weight. Every finished grow stays on record and makes the next one better.

GrowDat harvest screen: stage overview plus wet and dry weight of a harvested plant

ToolsVPD Calculator

Dial In Your Climate

Vapor pressure deficit is the number your plants actually feel. Slide in your tent's readings and try the same calculator that ships in the app, for free.

Typical VPD ranges by stage

  • Seedling & young plant0.4–0.8 kPa
  • Vegetation0.8–1.2 kPa
  • Flower1.2–1.6 kPa

Optimal ranges can shift slightly with strain and setup. Use these values as a guide.

1.19 kPa Veg sweet spot
24.0
60 %

Community

Grow With Other Growers

You're not growing alone. Follow other grows week by week, get answers when something goes wrong in the tent, and share your own grow when you're ready.

  • Private by defaultYour grows aren't public unless you choose to share them. Whether and which grow you share with the community is entirely up to you.
  • ReportsShare a grow publicly and GrowDat builds a report from it every week, with photos and readings. The community sees what's happening in your tent, and you get feedback. With Premium you can analyze other growers' reports in detail too.
  • PostsQuestions, tips and harvests, sorted by category, with votes and comments.
growitlikebenjo's profile with his public Gelato 44 reports
Report details for week 13: plant photos, readings for temperature, water, humidity, pH and VPD, plus votes and comments

What Growers Are Saying

4.7 4.7 out of 5 across 27 ratings
on the App Store Read all reviews

Real App Store reviews, quoted word for word. Only people who downloaded the app can review it there.

I really love this app. The way you track your grow and can analyze your grow behavior is just nuts. Also the built in community has so much potential. Over all great App. And btw I like your design

YoungJinebApp Store

Nice app not only for tracking your grow but also for getting in touch with other growers and checking on their plants and growstyle. You can really go into detail. Love it!

Jimmy24/7App Store

Well made App, with a lot of potential for a growing community! Nice insights to learn from your grow and setup.

MangoTango420App Store

Everybody on the app is nice and friendly, love to chat with other users about our plants. Greetings from Fuerteventura🌴🌴

HagelxgsjdneApp Store

User-friendly and smart app we just waited for so long!

GiardinoxxApp Store

Must have app ! Absolutely user friendly and easy to understand

LoloudjgApp Store

Track. Learn. Grow.

Your next grow deserves a journal. Free to download for iOS and Android.

Download on theApp Store Get it onGoogle Play

PremiumGet even more out of your grow

  • More detailed analysis of your grows and other growers' grow reports
  • Compare two readings in one chart, like temperature and humidity
  • Unlimited photos in high resolution

€2.99 a month or €29.99 a year. Prices include VAT; your store may show local pricing.