# Circuit Laboratory vs HVAC Super Tech

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.

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.

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.

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.

## The numbers

| Metric | Circuit Laboratory | HVAC Super Tech |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/circuit-laboratory/id1042205580/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/hvac-super-tech/id6744416563/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Fortnightly** |
| Monetization | **Paid** | Subscription |
| Size | 128 MB | 21 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Fabrizio Boco](https://appshunter.io/developer/466239616) | [BUILDING SOLUTIONS TECHNICAL SERVICES LLC](https://appshunter.io/developer/1807618125) |

## What reviewers say

### Circuit Laboratory

[App page](https://appshunter.io/ios/app/circuit-laboratory/id1042205580)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### HVAC Super Tech

[App page](https://appshunter.io/ios/app/hvac-super-tech/id6744416563)

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:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Level-Monthly Subscription | $29.99 | per month |
| Pro Level-Yearly Subscription | $199.99 | per year |
| Part Timer-30 Day Access | $49.99 | one-time |


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*