Comparison

HVAC Toolkit Lite vs CalcEngineer

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

Head to head
About

HVAC Toolkit Lite

This tool assists HVAC engineers with design checks and quick calculations. It offers various tools for ducting friction loss, pipe sizing, ventilation, and heat load estimations, providing instructions and formulas for each calculation.

Highlights
  • Friction loss calculation
  • Pipe sizing
  • Ventilation calculations
  • Heat load estimation
  • Pump head calculation
  • Fan ESP calculation
  • Metric/Imperial units
  • English/Arabic language support
Features
Read full description

The HVAC ToolKit Lite is an easy-to-use app that has been created to assist HVAC engineers in checking their designs and making quick calculations and estimations. The app includes helpful calculation tools for calculating friction losses in ducting, pipe sizing, parking ventilation, staircase pressurization, and estimating heat loads, pump head, fan ESP, among others, where the user is able to enter the required inputs and is given the calculated output. Each tool also includes instructions and abbreviated formulas that have been used to calculate the results. The app can be set to metric or imperial units and/or to the English or Arabic language. Users are expected to have some knowledge and understanding of HVAC engineering in order to use the tools properly. Users are also expected to check that the results are within an acceptable range for their respective projects. If you come across any inconsistencies while using the app or have any recommendations for additional inclusions, please contact us.

About

CalcEngineer

This app provides professional engineering calculations for compressed air systems. It helps engineers and technicians determine CFM requirements, size compressors and tanks, and analyze pressure drops for optimized pneumatic systems.

Highlights
  • CFM Calculator
  • Compressor & Tank Sizing
  • Pressure Drop Analysis
  • Flow Velocity & Pipe Sizing
  • Multiple CFM Entries
  • General Engineering Calculator Suite
Features
Read full description

CalcEngineer - Professional Engineering Calculators The ultimate compressed air system calculator for engineers, technicians, and professionals. Calculate CFM requirements, size compressors and tanks, analyze pressure drops, and optimize your pneumatic systems with engineering-grade precision. KEY FEATURES: • CFM Calculator - Air actuator airflow calculations with real-time results • Compressor Sizing - Size compressors for your specific air demands • Tank Sizing - Calculate air receiver tank requirements and capacity • Pressure Drop Analysis - Determine pressure loss in pipes and fittings • Flow Velocity Calculator - Calculate fluid velocity for optimal system design • Pipe Sizing - Optimize pipe diameter selection for efficiency • Multiple CFM Entries - Add multiple air demands for complex systems • Engineering Calculator Suite - Additional tools for mechanical, electrical, chemical, and thermal engineering PROFESSIONAL TOOLS: • Real-time calculations using industry-standard formulas • Pre-filled values that transfer between calculators • Imperial and metric unit support with automatic conversion • Engineering-grade accuracy for professional applications • Clean, intuitive interface designed for daily use PERFECT FOR: • Industrial engineers and maintenance teams • System designers and consultants • Engineering students and educators • Manufacturing and facility managers • HVAC professionals and technicians Built by Justin Bush | JB CRE8IV - Professional engineering calculation solutions.

Screenshots

HVAC Toolkit Lite3 screens
CalcEngineer4 screens

Verdict

The call

The clearest difference is update cadence: CalcEngineer at every 2 days against HVAC Toolkit Lite's every 11 days. HVAC Toolkit Lite's advantage is iOS requirement (12.0 vs 17). On price, rating, ratings volume and ads there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for HVAC Toolkit Lite against 5.0 for CalcEngineer. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

HVAC Toolkit Lite ships an update every 11 days, CalcEngineer every 2 days. The most recent releases landed on September 11, 2026 and October 1, 2026 respectively.

Scorecard2 real differences · 8 level
HVAC Toolkit Lite versus CalcEngineer: the parameters behind the verdict, then further details
ParameterHVAC Toolkit LiteCalcEngineer
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyEvery 11 daysEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17
Further details — not scored
Size61 MB10 MB
Age rating4+9+
DeveloperMohamad JaberJustin Bush

Customer experience

HVAC Toolkit Lite

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

CalcEngineer

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HVAC Toolkit Lite

No in-app purchases

None

CalcEngineer

No in-app purchases

Questions

Is HVAC Toolkit Lite free?
HVAC Toolkit Lite is free to download, with no in-app purchases.
Is CalcEngineer free?
CalcEngineer is free to download, with no in-app purchases.
Which has better reviews, HVAC Toolkit Lite or CalcEngineer?
HVAC Toolkit Lite and CalcEngineer are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do HVAC Toolkit Lite or CalcEngineer have ads?
Neither HVAC Toolkit Lite nor CalcEngineer shows ads.
Which is updated more often, HVAC Toolkit Lite or CalcEngineer?
HVAC Toolkit Lite ships an update every 11 days, and CalcEngineer every 2 days. Most recently, HVAC Toolkit Lite was updated on September 11, 2026 and CalcEngineer on October 1, 2026.

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