Comparison

VPD Chart vs CultiApp

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

CultiApp

Features
Read full description

CultiApp is the definitive solution for precise management of your Culti Plant System. The app enables simple adjustments of all aspects concerning light, airflow, and watering in your CultiKit system. Getting started with CultiApp is simple. Just download the app, connect to your local Wi-Fi, and follow the step-by-step instructions to access the full potential of your system. Should you need assistance, the Help Center is accessible directly through the app. With CultiApp, you can adjust and control: - Light settings, including on/off intervals, brightness and simulating sunrise and sunset. - Fan functions, on/off intervals, intensity and wind simulation for optimal ventilation. - Pump settings, regulate the water supply, including on/off intervals and irrigation cycles. Please note: The CultiKit controller starts with a default 12/12 hour light cycle and simulates natural sunrise and sunset over 30 minutes for an easy setup. By installing the app, you customize and control settings directly. Please note that local wifi access is required to connect the app to the controller. For optimal results, please consult the manual before app setup. To return to factory settings, a quick reset is possible by pressing and holding the button for 6 seconds until the light flashes. Support: Please choose “Helpcenter” in the app or visit: https://cultiplantsystems.com/support

Screenshots

VPD Chart4 screens
CultiApp4 screens

Verdict

The call

The clearest difference is in-app purchases: CultiApp at none against VPD Chart's 2. CultiApp also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support 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. CultiApp asks for nothing beyond the download.

UpkeepUpdate frequency

VPD Chart ships an update every 3 weeks, CultiApp every 4 weeks. The most recent releases landed on October 22, 2026 and October 16, 2026 respectively.

Scorecard2 real differences · 8 level
VPD Chart versus CultiApp: the parameters behind the verdict, then further details
ParameterVPD ChartCultiApp
PriceFreeFree
Rating4.5 (31 ratings) — better—
Positive reviews73.7% of reviews—
Number of ratings31 — better—
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size49 MB35 MB
Age rating4+17+
DeveloperINNOVO DEV S.R.L.CultiApp

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
None

CultiApp

No in-app purchases

Questions

Is VPD Chart free?
VPD Chart is free to download, with in-app purchases available.
Is CultiApp free?
CultiApp is free to download, with no in-app purchases.
Do VPD Chart or CultiApp have ads?
Neither VPD Chart nor CultiApp shows ads.
Which is updated more often, VPD Chart or CultiApp?
VPD Chart ships an update every 3 weeks, and CultiApp every 4 weeks. Most recently, VPD Chart was updated on October 22, 2026 and CultiApp on October 16, 2026.

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