# Gas Manager vs BART

The clearest difference is price: BART at Free against Gas Manager's $2.99. BART also leads on in-app purchases (none vs 3) and update cadence (every 6 weeks vs every 4 months). Gas Manager's advantage is rating (4.0 vs 3.0). On review sentiment, ratings volume, ads and device support there is nothing between them.

BART is free to download; Gas Manager costs $2.99 up front. Gas Manager sells 3 one-off in-app purchases. BART asks for nothing beyond the download.

Gas Manager holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 67% of Gas Manager's written reviews are positive against 60% of BART's.

Gas Manager ships an update every 4 months, BART every 6 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Gas Manager | BART |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/gas-manager-nitrox-and-trimix/id500438406/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/bart/id584673078/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | **66.7% of reviews** | 59.6% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Monetization | Paid | **Free** |
| Size | 16 MB | 64 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryan Booker](https://appshunter.io/developer/1200695611) | [EMERG SOLUTIONS PTY LTD](https://appshunter.io/developer/1763935640) |

## What reviewers say

### Gas Manager

[App page](https://appshunter.io/ios/app/gas-manager-nitrox-and-trimix/id500438406)

This app provides tools for planning and blending diving gases, including nitrox and trimix. It offers calculators for partial pressure blending, top-offs, and best mixes, along with calculations for MOD, END, EAD, and EDD.

**Highlights:** Nitrox and trimix partial pressure blending, Top off calculator, Best mix calculator, MOD calculation, END, EAD, and EDD calculation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Leave an Espresso Sized Tip | $2.99 | one-time |
| Tip a Bag of Beans | $8.99 | one-time |
| Tip a Big Bag of Beans | $29.99 | one-time |


### BART

[App page](https://appshunter.io/ios/app/bart/id584673078)

This application enhances communication and information access for emergency services personnel. It provides tools for team coordination, message feeds, and resource location, aiming to improve response times and safety.

**Highlights:** Pager message feed, Message centre, Parallel notifications (SMS, email, push), Member qualifications, Rostering and availability, Mapping and geolocation, Incident routing

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

**In-app purchases:** none


## Frequently asked questions

### Is Gas Manager free?

Gas Manager costs $2.99, and also offers in-app purchases.

### Is BART free?

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

### Which has better reviews, Gas Manager or BART?

Gas Manager is rated higher. Gas Manager averages 4.0 out of 5 from 2 ratings, while BART averages 3.0 from 2 ratings.

### Do Gas Manager or BART have ads?

Neither Gas Manager nor BART shows ads.

### Which is updated more often, Gas Manager or BART?

Gas Manager ships an update every 4 months, and BART every 6 weeks. Most recently, Gas Manager was updated on October 24, 2026 and BART on October 20, 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.*