Best Vpd Vapor Pressure Calculator Apps

203+ iOS apps curated and reviewed

4.3 avg rating
19 free apps
Updated June 2026

Every iPhone needs a few good vpd vapor pressure calculator apps. We benchmark 203+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Vpd Vapor Pressure Calculator

VPD Vapor Pressure Calculator#1

VPD Vapor Pressure Calculator by harry bloch

Dial In Your Grow Environment
Editor's Choice
🔧 Utilities
2.6(9 ratings)
FreeAdsIn-App Purchases
VPD Vapor Pressure Calculator screenshot 1
VPD Vapor Pressure Calculator screenshot 2
VPD Vapor Pressure Calculator screenshot 3
VPD Vapor Pressure Calculator screenshot 4
VPD Vapor Pressure Calculator screenshot 5

Calculate Vapor Pressure Deficit (VPD) to optimize your plant's growing environment. This app helps you balance air moisture with plant needs for healthier crops and maximized yields, suitable for various gardening methods.

VPD Chart#2

VPD Chart by INNOVO DEV S.R.L.

Democratization of VPD
Strong Contender
🔧 Utilities
4.5(26 ratings)
FreeIn-App Purchases
VPD Chart screenshot 1
VPD Chart screenshot 2
VPD Chart screenshot 3
VPD Chart screenshot 4
VPD Chart screenshot 5
VPD Chart screenshot 6

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.

Dr. Greenhouse VPD Calculator#3

Dr. Greenhouse VPD Calculator by Dr Greenhouse Inc

Calculate your VPD
Worth Considering
📊 Productivity
5.0(6 ratings)
Free
Dr. Greenhouse VPD Calculator screenshot 1
Dr. Greenhouse VPD Calculator screenshot 2
Dr. Greenhouse VPD Calculator screenshot 3

Easily calculate Vapor Pressure Deficit (VPD) for your grow room. Input temperature and humidity, and get a color-coded result indicating the climate's suitability for plant growth stages. Supports both Fahrenheit and Celsius.

More Vpd Vapor Pressure Calculator apps to explore

4
Photone - Grow Light Meter
Photone - Grow Light Meter
Photone - Grow Light Meter
Perfectly light your plants!
Free

This app acts as a professional-grade light meter for plants, measuring PAR, PPFD, DLI, and more using your device's camera. It helps optimize plant lighting by providing accurate readings and in-app guides, with optional advanced features available through purchase.

Measure PAR, PPFD, DLI, lux, foot-candles, and kelvinResearch-grade accuracy using device cameraPre-calibrated for specific devices
🔧 Utilities
(4.9K)
free with in-app purchases
5
Pulse Grow
Pulse Grow
Pulse Grow
Grow Room Monitoring
Free

Monitor your grow environment remotely, tracking temperature, humidity, and light. Receive custom alerts and log your progress with integrated journaling to optimize your plant growth.

Remote environmental monitoringTemperature and RH trackingLight monitoring
🔧 Utilities
(29)
free
6
HVACR Check & Charge
HVACR Check & Charge
HVACR Check & Charge
PT Charts Superheat Subcooling
Free

This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.

Instant refrigerant charge calculatorSuperheat calculator (non-TXV)Subcooling calculator (TXV)
🔍 Reference
(17K)
free
7
McCalc Fusion Calculator
McCalc Fusion Calculator
McCalc Fusion Calculator
HDPE/PP Pressure Calculator
Free

This app calculates the correct fusion pressure for HDPE and Polypropylene pipe jobs. It simplifies the process by selecting your fusion machine and entering pipe details to determine the recommended theoretical gauge pressure.

Select McElroy fusion machinesChoose from nine international standardsEnter pipe size in multiple units
💼 Business
(18)
free
8
P-T Calculator
P-T Calculator
P-T Calculator
by National Refrigerants, Inc.
Free

This tool simplifies HVAC/R technician tasks by calculating pressure/temperature relationships, superheat, and subcool. It automatically adjusts for altitude and offers English/Metric units. Easily access favorite refrigerants and supplementary information.

Pressure/Temperature calculationSuperheat/Subcool calculationAutomatic altitude correction
🔍 Reference
(51)
free
9
Light Meter LM-3000
Light Meter LM-3000
Light Meter LM-3000
Simple & accurate measurement!
Free

Transform your smartphone into a professional light meter. Measure illuminance and color temperature with scientifically validated accuracy, trusted by professionals. Requires a simple diffuser for precise readings.

Measure illuminance (lux/foot-candle)Measure color temperature (Kelvin)Industry-leading accuracy
🔧 Utilities
(2.5K)
free with in-app purchases
10
Dew Point Humidity Calculator
Dew Point Humidity Calculator
Dew Point Humidity Calculator
Relative Wet Bulb Temperature
Free

This utility app calculates dew point, humidity, and wet bulb temperature with speed and accuracy. It's designed for weather, HVAC, and scientific applications, eliminating the need for manual calculations or physical tools.

Dew point calculationPsychrometric calculationsSupports Celsius, Fahrenheit, Kelvin
🔧 Utilities
(52)
free with in-app purchases
11
Pipe Flow Wizard - Calculator
Pipe Flow Wizard - Calculator
Pipe Flow Wizard - Calculator
Flow Rate & Pressure Loss Calc
Free

Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.

Flow rate calculationsPressure loss calculationsPipe diameter sizing
🔧 Utilities
(98)
free with in-app purchases
12
Sporty's E6B Flight Computer
Sporty's E6B Flight Computer
Sporty's E6B Flight Computer
Calculator for pilots
$9.99

This aviation calculator app offers 27 functions for navigation, fuel calculations, and conversions. It includes a versatile timer for tracking multiple time zones and performing countdowns with alerts. Designed for pilots, it simplifies complex flight planning and in-flight computations.

27 Aviation Functions22 Aviation ConversionsNavigational Calculations
🗺️ Navigation
(5K)
paid
13
Elkhart Hard Facts Calculator
Elkhart Hard Facts Calculator
Elkhart Hard Facts Calculator
by Elkhart Brass
Free

This utility app provides essential calculators for accurate flow testing, covering various nozzle types, pump discharge pressures, and fire flow formulas. It also includes direct links to helpful instructional videos.

Smooth Bore Discharges & Flow/Pressure calculatorNozzle Reaction calculators (Smooth Bore & Fog)Pump Discharge Pressure calculators
🔧 Utilities
(12)
free
14
Refrigerant Charge Calculator
Refrigerant Charge Calculator
Refrigerant Charge Calculator
HVACR Check PT Chart Superheat
Free
🔧 Utilities
(0)
15
HVAC PT Chart
HVAC PT Chart
HVAC PT Chart
HVAC Pressure/Temp Charts
Free

This tool provides HVAC technicians with instant access to pressure and temperature data for over 100 refrigerants. It allows users to input one value to find the other, view detailed refrigerant properties, and email comprehensive charts and data.

Pressure/temperature lookup for 100+ refrigerantsInput temperature to find pressure, or vice versaSlider control for precise value selection
📊 Productivity
(8)
free
16
Calculator of Air
Calculator of Air
Calculator of Air
Psychrometric Charts Tool
Free

This tool calculates humidity-related air properties with a calculator-like interface. It supports six key parameters and provides accurate results even under extreme conditions. Ideal for HVAC, cleanrooms, and industrial drying.

Calculate six humidity parametersAccurate results under extreme conditionsSupports Celsius and Fahrenheit
📊 Productivity
(14)
ad-supported
17
Phoenix Psychrometric Calculator
Phoenix Psychrometric Calculator
Phoenix Psychrometric Calculator
by Therma-Stor, LLC
Free

Easily calculate psychrometric values like dew point and grains per pound by inputting temperature and humidity. It also helps determine dehumidifier performance by calculating water removal based on CFM and conditions.

Dew point calculationGrains per pound calculationDehumidifier performance calculation
📊 Productivity
(3)
free
18
GE Moisture Calculator
GE Moisture Calculator
GE Moisture Calculator
by General Electric Company
Free

This tool calculates moisture content in parts per million by volume (PPMv) and relative humidity (RH). It converts dew point, pressure, and temperature using various units.

Dew/Frost Point conversionPressure conversion (Pa, kPa, psig, bar, atm)Temperature conversion (Celsius, Fahrenheit)
💼 Business
(8)
free
19
Psychrometer °F
Psychrometer °F
Psychrometer °F
Calculate comfort.
Free

This app calculates thermal comfort by evaluating heat, cold, dryness, and moisture. It provides detailed air property calculations and indicates if conditions are within a comfortable range, with easy dial input and color-coded temperature.

Thermal comfort calculationAir property analysisColor-coded temperature
📊 Productivity
(125)
ad-supported
20
Dri-Eaz Psychrometric Calc
Dri-Eaz Psychrometric Calc
Dri-Eaz Psychrometric Calc
Psychrometric Calculator
Free

This utility app calculates essential drying environment variables. Input temperature and relative humidity to instantly get grains per pound (GPP). Advanced options allow calculation of vapor pressure and air dew point to material, with easy term definitions.

Calculate grains per pound (GPP)Calculate vapor pressureCalculate air dew point to material
🔧 Utilities
(12)
free