# DV vs AirMaxx Lite

The clearest difference is rating: AirMaxx Lite at 4.4 against DV's 3.3. AirMaxx Lite also leads on iOS requirement (9.3 vs 11.0). On price, ratings volume, update cadence and ads there is nothing between them.

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

AirMaxx Lite holds the better App Store score, 4.4 against 3.3. Both are backed by a comparable volume of ratings — 7 and 7 respectively.

DV ships an update every 3 months, AirMaxx Lite every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | DV | AirMaxx Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (7 ratings)](https://appshunter.io/ios/app/dv-40s/id977734858/reviews) | **[4.4 (7 ratings)](https://appshunter.io/ios/app/airmaxx-lite/id1319340072/reviews)** |
| Number of ratings | 7 | 7 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 55 MB | 23 MB |
| Requires iOS | 11.0 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JB Industries, Inc.](https://appshunter.io/developer/977734857) | [National Comfort Institute, Inc.](https://appshunter.io/developer/1097845247) |

## What reviewers say

### DV

[App page](https://appshunter.io/ios/app/dv-40s/id977734858)

This application displays real-time vacuum measurements from a wireless micron gauge. It offers advanced features like alarming, customizable themes, unit options, job timers, and data logging with email export capabilities.

**Highlights:** Wireless micron gauge integration, Real-time vacuum measurement display, Alarming capabilities, Customizable colored themes, Unit of measure options, Job timers, Data logging with save and email functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### AirMaxx Lite

[App page](https://appshunter.io/ios/app/airmaxx-lite/id1319340072)

Quickly calculate HVAC system fan and static pressure performance. Input basic system information and two static pressure measurements to receive clear visual representations of system status. Includes tutorials and articles for guidance.

**Highlights:** Fan airflow performance calculation, Static pressure performance calculation, Visual system status representation, Input nameplate information, Two static pressure measurements, Includes tutorials and articles

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DV free?

DV is free to download, with no in-app purchases.

### Is AirMaxx Lite free?

AirMaxx Lite is free to download, with no in-app purchases.

### Which has better reviews, DV or AirMaxx Lite?

AirMaxx Lite is rated higher. DV averages 3.3 out of 5 from 7 ratings, while AirMaxx Lite averages 4.4 from 7 ratings.

### Do DV or AirMaxx Lite have ads?

Neither DV nor AirMaxx Lite shows ads.

### Which is updated more often, DV or AirMaxx Lite?

DV ships an update every 3 months, and AirMaxx Lite every 2 months. Most recently, DV was updated on October 24, 2026 and AirMaxx Lite on October 24, 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.*