# Inogen Connect Portable Oxygen vs Drive DeVilbiss SmartLinkO2®

The clearest difference is rating: Inogen Connect Portable Oxygen at 4.3 against Drive DeVilbiss SmartLinkO2®'s 2.3. Inogen Connect Portable Oxygen also leads on ratings volume (700 vs 3) and update cadence (every 3 months vs every 17 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Inogen Connect Portable Oxygen holds the better App Store score, 4.3 against 2.3. That said, the two scores are not equally well evidenced: Inogen Connect Portable Oxygen has 700 ratings behind it against 3, so its average is the more settled of the two.

Inogen Connect Portable Oxygen ships an update every 3 months, Drive DeVilbiss SmartLinkO2® every 17 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Inogen Connect Portable Oxygen | Drive DeVilbiss SmartLinkO2® |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (700 ratings)](https://appshunter.io/ios/app/inogen-connect-portable-oxygen/id1360248558/reviews)** | [2.3 (3 ratings)](https://appshunter.io/ios/app/drive-devilbiss-smartlinko2/id1668882219/reviews) |
| Number of ratings | **700** | 3 |
| Positive reviews | 6.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 17 months |
| Monetization | Free | Free |
| Size | 91 MB | 73 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Inogen, Inc.](https://appshunter.io/developer/1360248557) | [DeVilbiss Healthcare](https://appshunter.io/developer/970673447) |

## What reviewers say

### Inogen Connect Portable Oxygen

[App page](https://appshunter.io/ios/app/inogen-connect-portable-oxygen/id1360248558)

Monitor your portable oxygen concentrator's battery life, settings, and receive important updates. Access helpful videos and troubleshooting information 24/7, all from your mobile device.

**Highlights:** Real-time stats, Battery life monitoring, Current settings display, Maintenance alerts, Troubleshooting guides, Helpful videos

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Basic functionality
- 🚀 Connects quickly when it works

**What reviewers complain about**

- 🐛 Frequent connection issues
- 🔋 Drains phone battery
- 🤯 Requires re-registration after each use
- 🤔 Limited functionality compared to previous version
- 🤷‍♀️ Useless without Bluetooth connection

**Reported bugs**

- Fails to detect or connect to oxygen concentrator
- Crashes or freezes on startup
- Incompatible with latest iOS versions
- Loses connection randomly during use

**Requested features**

- Remote control of oxygen concentrator
- Ability to change oxygen flow rate
- More detailed device diagnostics
- Improved battery life reporting


### Drive DeVilbiss SmartLinkO2®

[App page](https://appshunter.io/ios/app/drive-devilbiss-smartlinko2/id1668882219)

This app allows users to view performance data from their oxygen concentrator. It provides quantitative and qualitative information to increase patient freedom and peace of mind, and can assist HME providers with troubleshooting.

**Highlights:** View concentrator performance data, Access quantitative and qualitative data, Assist HME providers with troubleshooting, Wireless Bluetooth interface, FAQ section for data viewing

**In-app purchases:** none


## Frequently asked questions

### Is Inogen Connect Portable Oxygen free?

Inogen Connect Portable Oxygen is free to download, with no in-app purchases.

### Is Drive DeVilbiss SmartLinkO2® free?

Drive DeVilbiss SmartLinkO2® is free to download, with no in-app purchases.

### Which has better reviews, Inogen Connect Portable Oxygen or Drive DeVilbiss SmartLinkO2®?

Inogen Connect Portable Oxygen is rated higher. Inogen Connect Portable Oxygen averages 4.3 out of 5 from 700 ratings, while Drive DeVilbiss SmartLinkO2® averages 2.3 from 3 ratings.

### Do Inogen Connect Portable Oxygen or Drive DeVilbiss SmartLinkO2® have ads?

Neither Inogen Connect Portable Oxygen nor Drive DeVilbiss SmartLinkO2® shows ads.

### Which is updated more often, Inogen Connect Portable Oxygen or Drive DeVilbiss SmartLinkO2®?

Inogen Connect Portable Oxygen ships an update every 3 months, and Drive DeVilbiss SmartLinkO2® every 17 months. Most recently, Inogen Connect Portable Oxygen was updated on November 2, 2026 and Drive DeVilbiss SmartLinkO2® on November 3, 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.*