# O2gO2 vs Traumasoft GPS+

The clearest difference is in-app purchases: Traumasoft GPS+ at none against O2gO2's 1. Traumasoft GPS+ also leads on update cadence (every 3 months vs every 28 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. O2gO2 sells 1 in-app purchase, starting at $2.99 per year. Traumasoft GPS+ asks for nothing beyond the download.

O2gO2 ships an update every 28 months, Traumasoft GPS+ every 3 months. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | O2gO2 | Traumasoft GPS+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/o2go2/id895990670/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 months** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 18 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aeronautical Data Systems Inc.](https://appshunter.io/developer/552304929) | [Traumasoft](https://appshunter.io/developer/551637235) |

## What reviewers say

### O2gO2

[App page](https://appshunter.io/ios/app/o2go2/id895990670)

This utility app converts oxygen cylinder pressure into remaining time, helping users manage their compressed gas resources. It provides visual indicators and calculates duration based on tank size, current pressure, and flow rate.

**Highlights:** Converts PSI to time remaining, Calculates duration based on tank size, pressure, and flow rate, Visual multicolored strip indicates oxygen level, Yellow and red indicators for low oxygen, Automatic reset for pressure input, Assumes consistent tank size

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| O2 Go2 Yearly Subscription | $2.99 | per year |


### Traumasoft GPS+

[App page](https://appshunter.io/ios/app/traumasoft-gps-plus/id1604222277)

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

**In-app purchases:** none


## Frequently asked questions

### Is O2gO2 free?

O2gO2 is free to download, with in-app purchases available.

### Is Traumasoft GPS+ free?

Traumasoft GPS+ is free to download, with no in-app purchases.

### Do O2gO2 or Traumasoft GPS+ have ads?

Neither O2gO2 nor Traumasoft GPS+ shows ads.

### Which is updated more often, O2gO2 or Traumasoft GPS+?

O2gO2 ships an update every 28 months, and Traumasoft GPS+ every 3 months. Most recently, O2gO2 was updated on October 2, 2026 and Traumasoft GPS+ on October 13, 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.*