Comparison

HVAC Pipe Sizer vs Injection Molding Hub

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

HVAC Pipe Sizer

Calculate pipe sizes for liquid systems, including hot and chilled water. Input flow rate, head loss, diameter, or velocity to determine other properties. Supports various liquids, pipe materials, and fittings, with English or metric units.

Highlights
  • Liquid pipe sizing
  • Hydronic system calculations
  • Input flow, head loss, diameter, or velocity
  • Calculate fluid flow and head loss
  • Supports various liquids and pipe materials
  • English and metric unit options
  • Email results
Features
Read full description

The "HVAC Pipe Sizer - Liquid" application allows you to quickly size a simple pipe system by inputting a number of piping and liquid properties, including hot and chilled water (hydronic). This app is a universal app that works on both the iPhone and iPad and adjusts its screen size accordingly. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 You can specify the total fluid flow in GPM (or L/s) and one of either unit head loss (ft/100ft), pipe internal diameter (inches) or fluid velocity (ft/s) parameters. The results include both the exact and nominal pipe diameters and the calculated velocity and total head loss. If you are analyzing an existing pipe system, there is an option to input the existing pipe internal diameter and one of either unit head loss or fluid velocity parameters to derive the calculated fluid flow and other remaining properties. You can specify additional parameters such as the type of liquid, various properties of the liquid, the pipe material type, the total length of pipe, quantities for up to 11 different types of pipe fittings, and much more. You can also choose to display values in either english or metric units. This application includes built-in pipe fitting equivalent length and nominal pipe sizing tables for a wide variety of pipe material types and diameters. This application uses slider controls that allow you to quickly increment or decrement the input values and immediately observe the calculated results. You can also manually input exact values. The app allows you to email inputs and results once you have completed an analysis. This app now includes the HVAC Equipment Locator. Click here for details: http://bit.ly/1yTq539 We also offer the following additional applications for the iPhone/iPad: 1. HVAC Duct Sizer 2. HVAC Pipe Sizer โ€“ Gas Low Pressure 3. HVAC Pipe Sizer - Gas High Pressure 4. HVAC Pipe Sizer โ€“ Liquid 5. HVAC Pipe Sizer โ€“ Steam 6. Steam Tables 7. Psychrometric Plus 8. Psychrometric LT 9. HVAC Pipe Sizer Plus 10. HVAC Pipe Sizer Gas Plus 11. HVAC Toolkit 12. HVAC Toolkit Ultimate 13. HVAC Residential Load Calcs 14. HVAC Load Plus 15. HVAC Equipment Locator 16. ASHRAE Duct Fitting Database 17. ASHRAE 62.1 Ventilation Load Calcs 18. HVAC Psych HD 19. HVAC ResLoad-J 20. HVAC Residential Load Calcs HD

About

Injection Molding Hub

Features
Read full description

Shop Floor Ready โ€” Built for Real Factory Conditions Injection Molding Hub is built for the press floor, not the office. Every calculator, DOE study, and form is designed for real production use beside a running injection molding machine. High-contrast UI for factory lighting Fast input with instant results Works fully offline on the shop floor All data stays private on your device PDF export for reports and mold files Available in 14+ languages Built for the speed, accuracy, and pressure of real injection molding production. 14+ Engineering Tools Material & Weight Tools Shot Weight Calculator โ€” 51 materials with density tables Material Converter โ€” Convert weight across materials Masterbatch Calculator โ€” Color and additive dosing Runner Volume โ€” Runner volume, weight, and cost Material Identifier โ€” Identify plastics using water displacement Machine Setup Tools Screw Size Calculator Charging Limit Calculator Machine Capacity % RPM Calculator โ€” Screw RPM to surface speed Shot Utilization โ€” Match barrel size to shot weight Process & Quality Tools Shrinkage Calculator Vent Design Residence Time Cooling Time DOE Studies with PDF Export Run 6 scientific molding studies directly from your phone. Enter machine data, get calculated results, view charts, and export professional PDF reports. Viscosity Curve โ€” Find optimal injection speed Gate Seal Study โ€” Determine minimum hold time Cooling Study โ€” Calculate safe ejection time Cavity Balance โ€” Check balance across up to 16 cavities Pressure Drop โ€” Analyze pressure loss and reserve Cosmetic Window โ€” Find the widest process window Field Forms for Daily Records Replace paper logs with structured digital forms for injection molding operations. Machine Parameter Sheet Shot Weight Log Defect Tracking Sheet Shift Production Log Material Batch Record Build a complete production history, shift by shift. Production Calculators Production Time Production Rate Raw Material Calculator Cost Per Part Material Consumption Profit Margin Plan cycle time, output, material usage, cost, and profitability directly from your phone. Unit Converter Convert Length, Force, Pressure, Mass, Volume, and Temperature instantly. Switch between metric and imperial units on the shop floor. Molding Community Injection Molding Hub includes a professional community built exclusively for molders. Ask questions and get answers from real process engineers Share shop floor tips and techniques Discuss defects, parameters, and machine setups Follow topics like New, Top, Tips, and Defects Use built-in translation to connect worldwide No generic forums. No random social media. Just a focused community for injection molding professionals. Troubleshooting Encyclopedia Solve common injection molding defects such as flash, burn marks, sink marks, short shots, and warpage with root causes and corrective actions. Who Uses Injection Molding Hub? Process Engineers Senior Technicians Production Managers Mold Setters Quality Engineers Plant Managers Manufacturing and Plastics Engineering Students Available in 14+ Languages English, German, Japanese, Spanish, French, Portuguese, Turkish, Arabic, Urdu, and more. Why Injection Molding Hub? Injection Molding Hub combines engineering calculators, DOE studies, digital forms, production planning, cost analysis, troubleshooting, and a global molder community in one professional mobile app. This is not a basic calculator app. It is a complete injection molding system in your pocket. Download Injection Molding Hub today and take full command of your shop floor.

Screenshots

HVAC Pipe Sizer4 screens
Injection Molding Hub4 screens

Verdict

The call

The clearest difference is price: Injection Molding Hub at Free against HVAC Pipe Sizer's $4.99. Injection Molding Hub also leads on update cadence (every 10 days vs every 6 months). HVAC Pipe Sizer's advantage is ads (none vs shown) and chart position (#196 vs unranked). On in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Injection Molding Hub is free to download; HVAC Pipe Sizer costs $4.99 up front. HVAC Pipe Sizer sells 1 one-off in-app purchase and Injection Molding Hub sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

HVAC Pipe Sizer ships an update every 6 months, Injection Molding Hub every 10 days. The most recent releases landed on September 9, 2026 and September 8, 2026 respectively.

Scorecard4 real differences ยท 5 level
HVAC Pipe Sizer versus Injection Molding Hub: the parameters behind the verdict, then further details
ParameterHVAC Pipe SizerInjection Molding Hub
Price$4.99Free โ€” better
Positive reviews71.4% of reviewsโ€”
Update frequencyEvery 6 monthsEvery 10 days โ€” better
AdsNo โ€” betterYes
In-app purchasesYesYes
MonetizationPaidโ€”
Best chart rank#196 โ€” betterโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.5 โ€” better
Further details โ€” not scored
Size16 MB101 MB
Age rating4+4+
DeveloperCarmel Software CorporationMuhammad Shahzaib

In-app purchases

1 purchases

HVAC Pipe Sizer

One-time1
  • HVAC Equipment Locator$9.99
2 purchases

Injection Molding Hub

One-time2
  • Injection Moulding Pro$8.99
  • Pro Access$34.99

Questions

Is HVAC Pipe Sizer free?
HVAC Pipe Sizer costs $4.99, and also offers in-app purchases.
Is Injection Molding Hub free?
Injection Molding Hub is free to download, with in-app purchases available.
Do HVAC Pipe Sizer or Injection Molding Hub have ads?
Injection Molding Hub shows ads; HVAC Pipe Sizer does not.
Which is updated more often, HVAC Pipe Sizer or Injection Molding Hub?
HVAC Pipe Sizer ships an update every 6 months, and Injection Molding Hub every 10 days. Most recently, HVAC Pipe Sizer was updated on September 9, 2026 and Injection Molding Hub on September 8, 2026.

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