Comparison

Circuit Laboratory vs HVAC Super Tech

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

Head to head
About

Circuit Laboratory

Analyze electronic circuits with DC, AC, multifrequency AC, and transient analysis. Draw circuits graphically, modify component parameters, and view voltage and current graphs. Supports various components and offers video tutorials for each.

Highlights
  • DC, AC, Multifrequency AC, and Transient Analysis
  • Graphical circuit drawing
  • Component parameter editing
  • Voltage and current graphing
  • Support for diverse electronic components
  • Circuit saving and sharing
  • Video tutorials for components
Features
Read full description

Circuit Lab is an electronic circuit analysis tool based on the modified node analysis method. Four kind of analysis may be conducted: - DC: linear and non linear circuits with continuous voltage and current sources; - AC: linear e non linear circuits with sinusoidal voltage and current sources; - Multifrequency AC Analysis: linear and non linear circuits with sinusoidal voltage and current sources. It allows to analyze the circuit behavior in a range of frequencies. Useful to study the bandwidth of the circuit; - Transient: linear and non linear circuits, with sinusoidal and pulse voltage sources (available as In App Purchases). User can graphically draw the circuit and then the circuit can be analyzed. Circuit may be controlled by means of the following gestures: - Drag: to move the circuit into the desired position - Tap on a component: to modify the component's parameters - Pinch: to zoom in and out - Double Finger Double Tap: to reset position and zoom level to the original values Tapping DC button, user gets voltage at each circuit's node. Tapping AC button, user gets voltage phasors at each circuit node or the bode graph of the voltage at each circuit node (see BJT 16 - Common Emitter). Phasor graphs may be controlled by means of the following gesture: - Drag: to move the graph into the desired position - Pinch: to zoom in and out - Double Finger Double Tap: to reset position and zoom level to the original values Pressing Transient button, user can analyze circuit's behavior during time and get graphs of voltages and currents function of time. Each circuit can contain: - Resistors - Capacitors - Inductors - Mutual Coupled Inductors - Independent sinusoidal voltage generators - Independent pulse voltage generators - Independent sinusoidal current generators - Controlled voltage generators - Controlled current generators - Operation Amplifier - Diodes - Zener Diodes - Bjt NPN and PNP - Channel-N and Channel-P JFet - Channel-N and Channel-P Mosfet For each component, a short video is available to demonstrate how to insert it into the circuit and edit it's characteristics. Circuits may be easily stored and reused. User can print: - Circuits and component's list - Transient Analysis graphs Circuits can be easily shared through iCloud, by mail in the internal format so that can be reused by other users (on iPad too) and in PDF format. Visit my site for video tutorials and details about operational amplifier's internal model and diode's internal model.

About

HVAC Super Tech

This app provides certified-level HVAC technical support, offering fast troubleshooting for error codes and system faults. It features smart image analysis for diagrams and hands-free voice assistance for technicians.

Highlights
  • Fast error code diagnosis
  • System fault analysis
  • Image analysis of diagrams
  • Hands-free voice commands
  • 24/7 technical support
  • All manufacturer brands supported
Features
Read full description

HVAC Super Tech is the only mobile app that brings accurate certified-level HVAC expertise straight to your phone! Fast and Accurate Troubleshooting •Lightning-fast diagnosis of error codes, pressure/temperature readings, analysis, and system faults •Get clear, step-by-step instructions without flipping through manuals, or getting lost in web searches with unreliable information Smart Image & Diagram Analysis •Snap photos of wiring diagrams, circuit boards or equipment panels. Our OCR feature reads, annotates and guides you in real time. •Identify components and problem areas with precision. Hands-Free Voice Assistance •Use voice commands to ask questions while you work, no need to touch your phone with greasy gloves. Why HVAC Super Tech? •Built by industry-certified and seasoned HVAC professionals with decades of knowledge, experience, and resources in the building trades industry, HVAC Super Tech is the most valuable technical support app available! •Cost less than a day's lunch per week! Tired of waiting on a phone call, trying to find the manual online, or reaching out to multiple sources because of manufacturer/brand specific information? •HVAC Super Tech provides fast 24.7 technical support for all manufacturer brands of equipment and all building systems •No more being in the dark in those middle of the night service calls With HVAC Super Tech you’ll: •Reduce call-back rates and equipment downtime •Increase first-visit fix rates and billable hours •Empower less experienced techs with expert-level guidance, increasing knowledge and value along the way •Reduced time spent on service calls •Reduces having to add more technicians in high demand seasons, by making technicians more efficient •Build you and your companies reputation and have stronger relationships with clients Download now and transform every service call into a smooth, efficient and profitable experience. Your ultimate, single source 24.7 HVAC technical support is here and the value never ends! *Subscription required for app access. •Apple’s standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ •Privacy Policy: https://buildingsolutionstechnicalservices.com/#hvac-super-tech-app-privacy-policy

Screenshots

Circuit Laboratory4 screens
HVAC Super Tech4 screens

Verdict

The call

The clearest difference is review sentiment: HVAC Super Tech at 100% against Circuit Laboratory's 0%. HVAC Super Tech also leads on price (Free vs $5.99) and rating (5.0 vs 3.0). Circuit Laboratory's advantage is in-app purchases (none vs 3) and iOS requirement (13.0 vs 16.6). On ratings volume, ads and device support 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

HVAC Super Tech is free to download; Circuit Laboratory costs $5.99 up front. HVAC Super Tech sells 3 in-app purchases, starting at $29.99 per month. Circuit Laboratory asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

HVAC Super Tech holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 0% of Circuit Laboratory's written reviews are positive against 100% of HVAC Super Tech's.

UpkeepUpdate frequency

Circuit Laboratory ships an update every 12 months, HVAC Super Tech fortnightly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

Scorecard7 real differences · 3 level
Circuit Laboratory versus HVAC Super Tech: the parameters behind the verdict, then further details
ParameterCircuit LaboratoryHVAC Super Tech
Price$5.99Free — better
Rating3.0 (2 ratings)5.0 (5 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings25 — better
Update frequencyEvery 12 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid — betterSubscription
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better16.6
Further details — not scored
Size128 MB21 MB
Age rating4+17+
DeveloperFabrizio BocoBUILDING SOLUTIONS TECHNICAL SERVICES LLC

Customer experience

Circuit Laboratory

All ratings2 ratings
Positive0.0%
Neutral100.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

HVAC Super Tech

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Circuit Laboratory

No in-app purchases

3 purchases

HVAC Super Tech

Subscriptions2
  • Pro Level-Monthly Subscription7 Days trial$29.991 Month
  • Pro Level-Yearly Subscription$199.991 Year
One-time1
  • Part Timer-30 Day Access$49.99

Questions

Is Circuit Laboratory free?
Circuit Laboratory costs $5.99, with no in-app purchases.
Is HVAC Super Tech free?
HVAC Super Tech is free to download, with in-app purchases available.
Which has better reviews, Circuit Laboratory or HVAC Super Tech?
HVAC Super Tech is rated higher. Circuit Laboratory averages 3.0 out of 5 from 2 ratings, while HVAC Super Tech averages 5.0 from 5 ratings.
Do Circuit Laboratory or HVAC Super Tech have ads?
Neither Circuit Laboratory nor HVAC Super Tech shows ads.
Which is updated more often, Circuit Laboratory or HVAC Super Tech?
Circuit Laboratory ships an update every 12 months, and HVAC Super Tech fortnightly. Most recently, Circuit Laboratory was updated on October 24, 2026 and HVAC Super Tech on October 21, 2026.

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