HVAC Psychrometric LT Downloads & RevenueHVAC Psychrometric LT · App Store
HVAC Psychrometric LT is #154 in Productivity Paid in Thailand and charting in 1 of 30 countries we track.
Updated 11 Nov 2026 · rankings refresh through the day
DeveloperCarmel Software Corporation
CategoryProductivity
Price4,900.00 COP
Released
Rating★ 0.0 (0)
Version7.3
Age rating4+
First seen by us
25 Sep 2026
25 Sep 2026HVAC Psychrometric LT update history & changes
Last change · 20 events since 18 Jan 2010Full timeline ↓📦Updated to version 7.3✏️Description updated✏️New iPad screenshots📦Updated to version 7.2📈Charting in a new country📈Hit #1🆕First spotted by AppInsider🆕Released on the App Store
Full timeline · 20 events
- 📦HVAC Psychrometric LT updated to version 7.31. Fixed issue with keyboard overlapping inputs.
- ✏️HVAC Psychrometric LT: description updated· TH
- ✏️HVAC Psychrometric LT: new iPad screenshots· TH
- ✏️HVAC Psychrometric LT: new screenshots10 screenshots (was 10) · TH
- ✏️HVAC Psychrometric LT: description updated· MY
- ✏️HVAC Psychrometric LT: new iPad screenshots· MY
- ✏️HVAC Psychrometric LT: new screenshots10 screenshots (was 10) · MY
- ✏️HVAC Psychrometric LT: description updated· CO
- ✏️HVAC Psychrometric LT: new iPad screenshots· CO
- ✏️HVAC Psychrometric LT: new screenshots10 screenshots (was 10) · CO
- ✏️HVAC Psychrometric LT: app got smaller19 MB → 1 MB (-95%)
- ✏️HVAC Psychrometric LT: needs a newer iOSiOS 15.6 → iOS 17.0
- 📦HVAC Psychrometric LT updated to version 7.21. A modernized interface built around Apple's latest UI/UX guidelines, including a full iPad layout.
2. Updated the psychrometric calculations so they are 100% based on the Hands Down Software HDPsyChart calculations, the #1 desktop psych chart software tool in the world.
3. Reports can be sent as PDF, CSV (Excel), and HTML and by email, text message, or any other Share option.
4. A color picker lets you choose the color of the calculated output values.
5. Fully updated and formatted help.
6. Many smaller refinements throughout.… more - 📦HVAC Psychrometric LT: first update in 308 days
- 📈HVAC Psychrometric LT charting in a new countryMalaysia
- 📈HVAC Psychrometric LT hit #1Top Paid · Productivity · CO
- 📈HVAC Psychrometric LT charting in a new countryColombia
- 🆕HVAC Psychrometric LT first spotted by AppInsider#76 in Top Paid · Productivity · Indonesia
- 📦HVAC Psychrometric LT version 6.11. Added a Share button to the iPhone and iPad versions of the app, so you can now text, email, and download reports.
2. Updated help.
3. Optimized for iOS 26. - 🆕HVAC Psychrometric LT 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
#154
Productivity PaidMeasured
HVAC Psychrometric LT at a glance
AI summary written from our chart and store data, 2026-10-17. It can be wrong: check the numbers above.
A specialized productivity tool for HVAC engineers and technicians that performs single-state psychrometric calculations with real-time slider-based parameter adjustments. The app currently holds the #1 position in the Colombian paid Productivity charts, indicating strong regional demand despite having no visible user ratings or reviews.
Similar apps: PsychroCalc, HVAC Toolkit, Steam Tables
HVAC Psychrometric LT on the App Store
App details
App ID
348669920
Publisher
Carmel Software Corporation
On the store since
Jan 2010
16 years on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
1
EN
Size
1 MB
Also listed in
Business
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Thailand | ProductivityPaid | #154 |
Apps near HVAC Psychrometric LT on the chart
Productivity Paid, around #154.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
What users say about HVAC Psychrometric LT
From recent reviews.
About HVAC Psychrometric LT
The "HVAC Psychrometric LT" app is the #1 selling psychrometric application for the Apple iPhone and iPad. Tens of thousands of happy users have downloaded this useful application for performing quick and simple psychrometric analysis. Just a few reasons why you should buy this application:
1. The Psych LT is a universal app that it is optimized for both the iPhone and iPad.
2. This app was developed by Carmel Software, a company that has been developing software for 20+ years. We are experts in software design and HVAC analysis.
3. It allows you to quickly and easily perform single-state HVAC psychrometric calculations.
4. Select and update all input parameters and view the calculated results all in the same screen without switching from one screen to another.
5. Select from 23 different combinations of any 2 input parameters such as "Humidity Ratio / Dewpoint Temperature" and much more.
6. Immediately view updated results as you change the input values using the on-screen slider control. You can specify how much to increase or decrease values as you slide the indicator along the slider mechanism.
7. Send an HTML email and a spreadsheet attachment of all of the single-state and mixed-air inputs and results
The following input and output value-types are displayed:
1. Dry-bulb temperature
2. Humidity ratio
3. Relative Humidity
4. Wet-bulb temperature
5. Partial pressure
6. Enthalpy
7. Specific volume
8. Dewpoint temperature
9. Total airflow or mass flow (for mixed-air calcs, only)
You can specify additional parameters such as the altitude of the air being analyzed, the atmospheric pressure, different types of units such as degrees F or R, and English or Metric units.
The "HVAC Psychrometric LT" application was designed by Carmel Software Corporation, a leader in HVAC design software since 1995. In fact, Autodesk (the makers of AutoCAD) acquired our analysis software and incorporated it into their leading Autodesk Revit software product. In addition, ASHRAE has hired Carmel Software to develop custom mobile apps to accompany their various standards.
We also offer the following apps for the iPhone/iPad:
1. HVAC Residential Load Calcs
2. HVAC Load Plus
3. HVAC Duct Sizer
4. HVAC Pipe Sizer – Gas Low Pressure
5. HVAC Pipe Sizer - Gas High Pressure
6. HVAC Pipe Sizer – Liquid
7. HVAC Pipe Sizer – Steam
8. Steam Tables
9. HVAC Toolkit
10. Psychrometric LT
11. HVAC Pipe Sizer Plus
12. HVAC Pipe Sizer Gas Plus
13. HVAC Quick Load
14. HVAC ResLoad-J
15. HVAC Equipment Locator
16. HVAC Psych HD
1. The Psych LT is a universal app that it is optimized for both the iPhone and iPad.
2. This app was developed by Carmel Software, a company that has been developing software for 20+ years. We are experts in software design and HVAC analysis.
3. It allows you to quickly and easily perform single-state HVAC psychrometric calculations.
4. Select and update all input parameters and view the calculated results all in the same screen without switching from one screen to another.
5. Select from 23 different combinations of any 2 input parameters such as "Humidity Ratio / Dewpoint Temperature" and much more.
6. Immediately view updated results as you change the input values using the on-screen slider control. You can specify how much to increase or decrease values as you slide the indicator along the slider mechanism.
7. Send an HTML email and a spreadsheet attachment of all of the single-state and mixed-air inputs and results
The following input and output value-types are displayed:
1. Dry-bulb temperature
2. Humidity ratio
3. Relative Humidity
4. Wet-bulb temperature
5. Partial pressure
6. Enthalpy
7. Specific volume
8. Dewpoint temperature
9. Total airflow or mass flow (for mixed-air calcs, only)
You can specify additional parameters such as the altitude of the air being analyzed, the atmospheric pressure, different types of units such as degrees F or R, and English or Metric units.
The "HVAC Psychrometric LT" application was designed by Carmel Software Corporation, a leader in HVAC design software since 1995. In fact, Autodesk (the makers of AutoCAD) acquired our analysis software and incorporated it into their leading Autodesk Revit software product. In addition, ASHRAE has hired Carmel Software to develop custom mobile apps to accompany their various standards.
We also offer the following apps for the iPhone/iPad:
1. HVAC Residential Load Calcs
2. HVAC Load Plus
3. HVAC Duct Sizer
4. HVAC Pipe Sizer – Gas Low Pressure
5. HVAC Pipe Sizer - Gas High Pressure
6. HVAC Pipe Sizer – Liquid
7. HVAC Pipe Sizer – Steam
8. Steam Tables
9. HVAC Toolkit
10. Psychrometric LT
11. HVAC Pipe Sizer Plus
12. HVAC Pipe Sizer Gas Plus
13. HVAC Quick Load
14. HVAC ResLoad-J
15. HVAC Equipment Locator
16. HVAC Psych HD
Latest updates
7.3
1. Fixed issue with keyboard overlapping inputs.
7.2
1. A modernized interface built around Apple's latest UI/UX guidelines, including a full iPad layout.
2. Updated the psychrometric calculations so they are 100% based on the Hands Down Software HDPsyChart calculations, the #1 desktop psych chart software tool in the world.
3. Reports can be sent as PDF, CSV (Excel), and HTML and by email, text message, or any other Share option.
4. A color picker lets you choose the color of the calculated output values.
5. Fully updated and formatted help.
6. Many smaller refinements throughout.
6.1
1. Added a Share button to the iPhone and iPad versions of the app, so you can now text, email, and download reports.
2. Updated help.
3. Optimized for iOS 26.
Store changes
What HVAC Psychrometric LT changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
New iPad screenshots
New screenshots
10 screenshots (was 10)
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