DuctCalc.Ca 4+
Ductulator Duct Calculator
Firas Kneifati
Designed for iPad
-
- Free
- Offers In-App Purchases
Screenshots
Description
DuctCalc.Ca is the iOS offline version of the most popular online ductulator app (ductcalc.ca)
Enjoy using the app with no internet connection when subscribed!
App engineering explanation:
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Equal Friction Method:
Using a predefined static pressure loss per unit of duct length, DuctCalc.Ca Ductulator App calculates the diameter of round duct and the other dimension of rectangular duct. Based on the calculated dimensions, the air velocity will be calculated for both duct shapes and dimensions.
Velocity Method:
Using a predefined air velocity, DuctCalc.Ca Ductulator App calculates the diameter of round duct and the other dimension of a rectangular duct. Based on the calculated dimensions, the static pressure loss will be calculated for both duct shapes and dimensions. Note that unlike conventional ductulators, this ductulator will calculate the dimensions of the rectangular duct based on the given velocity and it then calculates the static pressure loss for the rectangular duct based on the given velocity and dimensions. Most old calculators will only use the given velocity to calculate the diameter of the round duct then it calculates the static pressure loss for the round duct and uses that static pressure to calculate the rectangular duct dimensions which is not the case here for more precise velocity output.
Colebrook equation is used to solve for Darcy's friction factor and calculates the static pressure loss in the duct until it matches the desired input at defined airflow and absolute roughness of the inner material of the duct touching the moving air.
In-App Purchases:
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• With no subscription the app will calculate for an air flow range between (950 and 1100 [cfm]).
To activate full air flow functionality. There are four subscription options: one month, three months, six months and one year.
• All subscription options will activate the "Full Air Flow Functionality" of the duct sizing app for that specific subscription period. The full air flow range is (1 to 500,000 [CFM] or 1 to 235,974 [L/s] in metric units).
• Payment will be charged to iTunes Account at confirmation of purchase.
• Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.
Privacy Policy: https://ductcalc.ca/?page=agreement
Terms of Service: https://ductcalc.ca/?page=agreement
What’s New
Version 1.2
User interface improvement.
Integration with ductcalc.ca/premium subscriptions.
Ratings and Reviews
Unusable without payment
You have to pay for a subscription to use it unless your airflow always hovers around 1000cfm. Just use the website. It’s free and great.
Developer Response ,
The paid version is what is funding the free great website. This kind of reviews may deprive everyone of the free stuff you like when no one is ready to pay!
Worth the money
The most user friendly app for duct design.
It’s very easy to switch between friction and velocity methods and compare both rectangular and round duct dimensions.
I’m surprised that there are some reviews here complaining about the little subscription payment they have to pay which is less than the cost of a cup of coffee a week.
It’s definitely worth every penny! Strongly recommended
Developer Response ,
Thanks for being fair Igor!
Reliable and accurate resource to have on the go
What a great app. Been using the web version for a while sizing residential jobs. Nice to now have access to this on an app!! Very accurate. I can tell that a lot of time and effort was put into it’s development. Thank You for creating this !!!
Developer Response ,
Thanks for your valuable feedback :)
App Privacy
The developer, Firas Kneifati, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.
No Details Provided
The developer will be required to provide privacy details when they submit their next app update.
Information
- Seller
- Firas Kneifati
- Size
- 9.2 MB
- Category
- Utilities
- Compatibility
-
- iPhone
- Requires iOS 11.3 or later.
- iPad
- Requires iPadOS 11.3 or later.
- iPod touch
- Requires iOS 11.3 or later.
- Mac
- Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
-
English
- Age Rating
- 4+
- Copyright
- © 2019 Firas Kneifati
- Price
- Free
- In-App Purchases
-
- One Month Full Air Flow $6.99
- One Year Full Air Flow $49.99
- Three Months Full Air Flow $17.99
- Six Months Full Air Flow $29.99