# Field Technician App vs HVAC Tech Assistant

The clearest difference is in-app purchases: Field Technician App at none against HVAC Tech Assistant's 3. Field Technician App also leads on iOS requirement (13.0 vs 26.2). HVAC Tech Assistant's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. HVAC Tech Assistant sells 3 in-app purchases, starting at $5.99 per month. Field Technician App asks for nothing beyond the download.

Field Technician App ships an update every 2 months, HVAC Tech Assistant fortnightly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Field Technician App | HVAC Tech Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 26 MB | 13 MB |
| Requires iOS | **13.0** | 26.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [eBest-IoT](https://appshunter.io/developer/1162585559) | [Chris Johnston](https://appshunter.io/developer/1871798616) |

## What reviewers say

### Field Technician App

[App page](https://appshunter.io/ios/app/field-technician-app/id6448693812)

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

**In-app purchases:** none


### HVAC Tech Assistant

[App page](https://appshunter.io/ios/app/hvac-tech-assistant/id6774753684)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deep Storm Alpha HVAC Premium | $5.99 | per month |
| Premium Yearly | $59.99 | per year |
| 50 AI Credits | $4.99 | one-time |


## Frequently asked questions

### Is Field Technician App free?

Field Technician App is free to download, with no in-app purchases.

### Is HVAC Tech Assistant free?

HVAC Tech Assistant is free to download, with in-app purchases available.

### Do Field Technician App or HVAC Tech Assistant have ads?

Neither Field Technician App nor HVAC Tech Assistant shows ads.

### Which is updated more often, Field Technician App or HVAC Tech Assistant?

Field Technician App ships an update every 2 months, and HVAC Tech Assistant fortnightly. Most recently, Field Technician App was updated on October 12, 2026 and HVAC Tech Assistant on October 7, 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.*