# Switch Always On vs Mean HVAC BS Tools

The clearest difference is monetization model: Switch Always On at free against Mean HVAC BS Tools's paid. On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Switch Always On against 5.0 for Mean HVAC BS Tools. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Switch Always On ships an update every 3 months, Mean HVAC BS Tools every 2 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Switch Always On | Mean HVAC BS Tools |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/switch-always-on/id1505114113/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/mean-hvac-bs-tools/id6621189879/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free** | Paid |
| Size | 50 MB | 54 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smart Charging Technologies](https://appshunter.io/developer/1505114112) | [Mean HVAC Consulting & Design LLC](https://appshunter.io/developer/1761936254) |

## What reviewers say

### Switch Always On

[App page](https://appshunter.io/ios/app/switch-always-on/id1505114113)

This app remotely monitors and configures smart IoT DC Micro Power Supply devices. It helps improve power reliability for networking equipment and automatically reboots modems and routers when they hang.

**Highlights:** Remote monitoring of power supply devices, Real-time configuration of devices, Automatic reboot of modems and routers, Improve power reliability for networking, Supports multiple devices

**In-app purchases:** none


### Mean HVAC BS Tools

[App page](https://appshunter.io/ios/app/mean-hvac-bs-tools/id6621189879)

This utility app offers a suite of calculators for HVAC professionals, including psychrometric analysis, duct sizing, insulation R-value estimation, and air bypass calculations. It helps engineers and technicians quickly determine essential parameters for system design and analysis.

**Highlights:** Single Point Psychrometrics, Mixed Air Psychrometrics, Duct Calculator (CFM, Diameter, Friction, Velocity), Smallest Zone Calculator, Bypass Calculator (Cooling/Heating), IR Wall Insulation R-Value Estimation, Parallel R-Value Calculator, Unit Converter

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Switch Always On free?

Switch Always On is free to download, with no in-app purchases.

### Is Mean HVAC BS Tools free?

Mean HVAC BS Tools is free to download, with no in-app purchases.

### Which has better reviews, Switch Always On or Mean HVAC BS Tools?

Switch Always On and Mean HVAC BS Tools are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do Switch Always On or Mean HVAC BS Tools have ads?

Neither Switch Always On nor Mean HVAC BS Tools shows ads.

### Which is updated more often, Switch Always On or Mean HVAC BS Tools?

Switch Always On ships an update every 3 months, and Mean HVAC BS Tools every 2 months. Most recently, Switch Always On was updated on November 3, 2026 and Mean HVAC BS Tools on October 30, 2026.

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