# RefTech vs TrueFlow HVAC Air Flow

The clearest difference is review sentiment: TrueFlow HVAC Air Flow at 100% against RefTech's 0%. TrueFlow HVAC Air Flow also leads on rating (5.0 vs 2.7) and in-app purchases (none vs 1). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. RefTech sells 1 one-off in-app purchase. TrueFlow HVAC Air Flow asks for nothing beyond the download.

TrueFlow HVAC Air Flow holds the better App Store score, 5.0 against 2.7. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews point the same way: 0% of RefTech's written reviews are positive against 100% of TrueFlow HVAC Air Flow's.

RefTech ships an update every 6 months, TrueFlow HVAC Air Flow every 5 weeks. The most recent releases landed on September 13, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | RefTech | TrueFlow HVAC Air Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/reftech/id1209881606/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/trueflow-hvac-air-flow/id1518628173/reviews)** |
| Number of ratings | 3 | **4** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Subscription | **Free** |
| Size | 6 MB | 118 MB |
| Requires iOS | 13.4 | **12.2** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Blue Mountain Consulting Inc](https://appshunter.io/developer/1143744720) | [The Energy Conservatory](https://appshunter.io/developer/504703668) |

## What reviewers say

### RefTech

[App page](https://appshunter.io/ios/app/reftech/id1209881606)

This diagnostic tool assists in troubleshooting commercial refrigeration systems up to 7.5 HP. Input sensor data to receive likely diagnoses and suggested repair steps. Version 1.3 adds Bluetooth connectivity for specific temperature and pressure probes.

**Highlights:** Refrigeration system diagnostics, Troubleshooting up to 7.5 HP, Pressure and temperature sensor input, Likely diagnosis generation, Repair suggestions, Bluetooth probe connectivity (v1.3)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RefTech Subscriptions | $9.99 | one-time |


### TrueFlow HVAC Air Flow

[App page](https://appshunter.io/ios/app/trueflow-hvac-air-flow/id1518628173)

This tool offers a simple and accurate way to measure airflow through residential air handlers. It provides direct CFM readings quickly, without complex calculations. Designed for ease of use in various air handler configurations.

**Highlights:** Accurate airflow measurement, Direct CFM readings, Fast 2-3 minute readings, Easy field use, Wide range of configurations, Replaces air filter for measurement

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RefTech free?

RefTech is free to download, with in-app purchases available.

### Is TrueFlow HVAC Air Flow free?

TrueFlow HVAC Air Flow is free to download, with no in-app purchases.

### Which has better reviews, RefTech or TrueFlow HVAC Air Flow?

TrueFlow HVAC Air Flow is rated higher. RefTech averages 2.7 out of 5 from 3 ratings, while TrueFlow HVAC Air Flow averages 5.0 from 4 ratings.

### Do RefTech or TrueFlow HVAC Air Flow have ads?

Neither RefTech nor TrueFlow HVAC Air Flow shows ads.

### Which is updated more often, RefTech or TrueFlow HVAC Air Flow?

RefTech ships an update every 6 months, and TrueFlow HVAC Air Flow every 5 weeks. Most recently, RefTech was updated on September 13, 2026 and TrueFlow HVAC Air Flow on September 17, 2026.

---

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