Comparison

VPD Chart vs Grow Guide

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VPD Chart

This app calculates Vapor Pressure Deficit (VPD) using air temperature, relative humidity, and canopy temperature. It offers real-time charting, sensor integration, and educational tools to understand plant growth environments. Organize data by zones and visualize dew point areas.

Highlights
  • VPD calculation
  • Interactive VPD chart
  • Sensor integration
  • Zone organization
  • Dew point visualization
  • Grow Timeline
Features
Read full description

The app calculates VPD using air temperature, relative humidity, and canopy temperature. View real-time VPD values on an interactive chart. Connect sensors for automated readings or manually input data via intuitive sliders and text inputs. Key features: • Interactive VPD chart with manual input • Default crop types • Organize charts by assigning them to different zones • Display spots that share the same VPD value • Zoom in and out of the VPD chart with a two-finger pinch and drag to pan around • VPD Target - long-press the chart to set a target VPD value • Dew point area visualization • Grow Timeline • Sync sensor historical data by importing it from sensor's app, via cloud APIs, or bluetooth • Explore sensor history by panning and zooming Supported bluetooth devices: • AC Infinity Cloudcom B2, A2, B1 • SensorPush: HT1, HT.w, HT.xw • Govee: H5051, H5072, H5074, H5075, H5100, H5101, H5102, H5103, H5104, H5105, H5174, H5177, H5179 • SwitchBot: Meter, Plus, Indoor Outdoor • Ruuvi: RuuviTag and RuuviTag Pro • Inkbird: IBS-TH1, IBS-TH1 Plus, IBS-TH2, IBS-TH2 Plus • ThermoPro: TP351, TP357, TP358, TP359 • VIVOSUN AeroLab THB1S • Shelly BLU H&T • Xiaomi Mijia 2 (LYWSD03MMC) (original and pvvx firmware) Supported devices with API connectivity: • Govee • Pulse • UbiBot • Ecowitt • Tuya • SensorPush Educational benefits: • Interactive Learning: Explore the dynamics of VPD based on changes in temperature and relative humidity by manipulating input sliders and animating the chart • Canopy - Air Temperature Link: Easily visualize and set values by linking canopy temperature to air temperature • Chart Bands Control: Toggle chart bands on/off (dew, under transpiration, prop, veg, flower, over transpiration) for a comprehensive understanding Included: 1 chart with manual input and grow timeline, device data sync & explore, default crops VPD Chart Plus subscription unlocks: • Unlimited charts • Automated VPD calculation by using sensors as the input data source • Background monitoring and Alerts (temperature, RH, VPD) • VPD history timeline, available on sensor-driven VPD charts • Custom crops Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Grow Guide

This app helps users track their cannabis grows from seed to harvest. It offers AI-powered advice, a community forum for knowledge sharing, and professional tools like a VPD calculator and light meter. Create time-lapse videos of your plants and learn from experienced cultivators.

Highlights
  • Daily grow tracking journal
  • AI-powered plant advice
  • Time-lapse video creation
  • Active grower community
  • Professional growing tools (VPD, light meter)
  • Nutrient and environment tracking
Features
Read full description

Grow Smarter, Not Harder Join thousands of cannabis growers tracking their grows, sharing knowledge, and getting AI-powered expert advice. Whether you're a first-time grower or a seasoned cultivator, Grow Guide is your all-in-one cannabis tracking app and community. What Makes Grow Guide Different: Complete cannabis grow journal with daily tracking AI Plant Doctor for instant growing advice Time-lapse video montages (exclusive to Grow Guide!) Active community of helpful growers Professional growing tools (VPD, light meter, feeding calculator) Track nutrients, environment, and growth stages Privacy controls for sensitive grows Key Features: Grow Journal - Log every detail from seed to harvest Community Feed - Connect with growers worldwide AI Chat - Get instant answers to growing questions Time-Lapse Creator - Turn your grow into stunning videos Grower's Toolbox - 15+ professional tools in one app Courses & Q&A - Learn from experienced cultivators Contests & Giveaways - Win prizes from sponsors What Growers Say: "Between Reddit, other grow apps, and Discord, this app is far superior. You genuinely listen to users and make it better every update. I believe this community will thrive!" — TheWookalarKing "I was just looking for a way to track my grow, but the social aspect is a game changer! As a retired programmer, I appreciate the attention to detail. You saved me from writing my own app!" — CodePirate Download now and join the fastest-growing cannabis community! Terms: https://growguide.app/terms

Screenshots

VPD Chart4 screens
Grow Guide4 screens

Verdict

The call

The clearest difference is rating: Grow Guide at 4.9 against VPD Chart's 4.5. Grow Guide also leads on review sentiment (97% vs 74%) and update cadence (weekly vs every 3 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VPD Chart sells 2 in-app purchases, starting at $3.99 per month and Grow Guide sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Grow Guide holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 30 and 121 respectively. Written reviews point the same way: 74% of VPD Chart's written reviews are positive against 97% of Grow Guide's.

UpkeepUpdate frequency

VPD Chart ships an update every 3 weeks, Grow Guide weekly. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
VPD Chart versus Grow Guide: the parameters behind the verdict, then further details
ParameterVPD ChartGrow Guide
PriceFreeFree
Rating4.5 (30 ratings)4.9 (121 ratings) — better
Positive reviews73.7% of reviews96.7% of reviews — better
Number of ratings30121 — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size49 MB85 MB
Age rating4++17
DeveloperINNOVO DEV S.R.L.phannafest llc

Customer experience

VPD Chart

All ratings30 ratings
Positive86.7%
Neutral3.3%
Negative10.0%
Written reviews19 reviews
Positive73.7%
Neutral0.0%
Negative26.3%

Grow Guide

All ratings121 ratings
Positive97.5%
Neutral1.7%
Negative0.8%
Written reviews30 reviews
Positive96.7%
Neutral0.0%
Negative3.3%

In-app purchases

2 purchases

VPD Chart

Subscriptions2
  • VPD Chart Plus (monthly)3 Days trial$3.991 Month
  • VPD Chart Plus (annual)3 Days trial$29.991 Year
3 purchases

Grow Guide

Subscriptions2
  • Grow Guide Pro7 Days trial$5.991 Month
  • Grow Guide Pro7 Days trial$39.991 Year
One-time1
  • Grow Guide Pro (LTD)$149.00

Questions

Is VPD Chart free?
VPD Chart is free to download, with in-app purchases available.
Is Grow Guide free?
Grow Guide is free to download, with in-app purchases available.
Which has better reviews, VPD Chart or Grow Guide?
Grow Guide is rated higher. VPD Chart averages 4.5 out of 5 from 30 ratings, while Grow Guide averages 4.9 from 121 ratings.
Do VPD Chart or Grow Guide have ads?
Neither VPD Chart nor Grow Guide shows ads.
Which is updated more often, VPD Chart or Grow Guide?
VPD Chart ships an update every 3 weeks, and Grow Guide weekly. Most recently, VPD Chart was updated on September 22, 2026 and Grow Guide on September 23, 2026.

Other comparisons