GrainPoint Psychrometric Calc Downloads & RevenueGrainPoint Psychrometric Calc · App Store
46 days old
GrainPoint Psychrometric Calc is #194 in Utilities Paid in United States and charting in 1 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperYaniv van der Stigchel
CategoryUtilities
Price4.99 USD
Released
Rating★ 0.0 (0)
Version1.2.1
Age rating4+
First seen by us
26 Oct 2026
26 Oct 2026GrainPoint Psychrometric Calc update history & changes
Last change · 8 events since 24 Sep 2026Full timeline ↓📈Charting in a new country🆕First spotted by AppInsider📦Version 1.2.1🆕Its developer released another app: Daltona Simulatore Daltonismo
Full timeline · 8 events
- 📈GrainPoint Psychrometric Calc charting in a new countryGermany
- 🆕GrainPoint Psychrometric Calc first spotted by AppInsider#30 in Top Paid · Utilities · United States
- 📦GrainPoint Psychrometric Calc version 1.2.1• Metric enthalpy now uses the standard SI reference point.
- 🆕GrainPoint Psychrometric Calc: its developer released another app: Daltona Simulatore Daltonismo
- 🆕GrainPoint Psychrometric Calc: its developer released another app: Lugwise: Drum Tuner & Pitch
- 🆕GrainPoint Psychrometric Calc: its developer released another app: Readback: METAR & TAF Decoder
- 🆕GrainPoint Psychrometric Calc: its developer released another app: SnapPoker: Cotes de Poker
- 🆕GrainPoint Psychrometric Calc released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Best rank now
#194
Utilities PaidMeasured
GrainPoint Psychrometric Calc on the App Store
App details
App ID
6814971905
Publisher
Yaniv van der Stigchel
On the store since
Sep 2026
Under a year
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Content rating
4+
Languages
5
NL EN DE IT PT
Size
5 MB
Also listed in
Productivity
Where GrainPoint Psychrometric Calc's downloads come from Modelled
Last 30 days: organic search, browsing the store, features and paid ads.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| United States | UtilitiesPaid | #194 |
Apps near GrainPoint Psychrometric Calc on the chart
Utilities Paid, around #194.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About GrainPoint Psychrometric Calc
It is 7am, the building is wet, and the only question is whether to open the windows. GrainPoint answers that one.
Type the inside reading and the outside reading. GrainPoint compares them on GRAINS — the actual weight of water each holds — and tells you whether ventilating would dry the place out or make the job longer.
THE MISTAKE IT EXISTS TO PREVENT
Outside at 85°F and 50% has a lower relative humidity than inside at 75°F and 60%. It feels drier. It is not drier: it holds about twelve more grains per pound. Open the windows on that and you have just pumped water into a building you are trying to dry.
GrainPoint names that case out loud when it happens, because every instinct says the opposite.
It also refuses to decide when the two readings are within a few grains of each other. A field hygrometer is commonly ±3% RH, and pretending a two-grain difference is a decision would be false precision.
READ ACROSS, BOTH STATES AT ONCE
Dry bulb, wet bulb, dew point, dew point depression, relative humidity, humidity ratio, enthalpy, specific volume and vapour pressure — for inside and outside side by side, which is how you actually use them.
Everything comes from the ASHRAE Fundamentals formulation, the same correlations the printed psychrometric chart is a plot of, computed directly rather than interpolated off a digitised chart. Separate saturation correlations over ice and over water, so a February job is right too.
CORRECTED FOR THE JOB
Humidity ratio is water per pound of DRY air, and thin air weighs less. At the same temperature and humidity, a job a mile up carries more grains than one at sea level. Set the altitude and every number accounts for it — barometric pressure, not an assumption.
DRYING TARGETS
Four published chamber targets in grains, from an aggressive first-day differential to an occupied-comfort band, with a line on each saying what it is for. Set one and the app tells you when the chamber has reached it.
Fahrenheit and grains per pound, or Celsius and grams per kilogram. Switch any time.
WHAT IT IS NOT
It describes the air, not the material. It does not read moisture content in wood or drywall, size a dehumidifier, assess mould, or replace metering the material itself. The ventilate-or-dehumidify verdict compares two readings you took — it does not know what the weather will do next. The app says all of this on its own Reference screen.
Works offline. No account.
Type the inside reading and the outside reading. GrainPoint compares them on GRAINS — the actual weight of water each holds — and tells you whether ventilating would dry the place out or make the job longer.
THE MISTAKE IT EXISTS TO PREVENT
Outside at 85°F and 50% has a lower relative humidity than inside at 75°F and 60%. It feels drier. It is not drier: it holds about twelve more grains per pound. Open the windows on that and you have just pumped water into a building you are trying to dry.
GrainPoint names that case out loud when it happens, because every instinct says the opposite.
It also refuses to decide when the two readings are within a few grains of each other. A field hygrometer is commonly ±3% RH, and pretending a two-grain difference is a decision would be false precision.
READ ACROSS, BOTH STATES AT ONCE
Dry bulb, wet bulb, dew point, dew point depression, relative humidity, humidity ratio, enthalpy, specific volume and vapour pressure — for inside and outside side by side, which is how you actually use them.
Everything comes from the ASHRAE Fundamentals formulation, the same correlations the printed psychrometric chart is a plot of, computed directly rather than interpolated off a digitised chart. Separate saturation correlations over ice and over water, so a February job is right too.
CORRECTED FOR THE JOB
Humidity ratio is water per pound of DRY air, and thin air weighs less. At the same temperature and humidity, a job a mile up carries more grains than one at sea level. Set the altitude and every number accounts for it — barometric pressure, not an assumption.
DRYING TARGETS
Four published chamber targets in grains, from an aggressive first-day differential to an occupied-comfort band, with a line on each saying what it is for. Set one and the app tells you when the chamber has reached it.
Fahrenheit and grains per pound, or Celsius and grams per kilogram. Switch any time.
WHAT IT IS NOT
It describes the air, not the material. It does not read moisture content in wood or drywall, size a dehumidifier, assess mould, or replace metering the material itself. The ventilate-or-dehumidify verdict compares two readings you took — it does not know what the weather will do next. The app says all of this on its own Reference screen.
Works offline. No account.
Latest updates
1.2.1
• Metric enthalpy now uses the standard SI reference point.
