# GasBook vs Fexillon Platform

The clearest difference is in-app purchases: Fexillon Platform at none against GasBook's 3. Fexillon Platform also leads on update cadence (fortnightly vs every 5 weeks) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. GasBook sells 3 in-app purchases, starting at $5.99 per year. Fexillon Platform asks for nothing beyond the download.

GasBook ships an update every 5 weeks, Fexillon Platform fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | GasBook | Fexillon Platform |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/gasbook/id1628532525/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Freemium | — |
| Size | 65 MB | 105 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nicholas Clinch](https://appshunter.io/developer/1628532527) | [Fexillon](https://appshunter.io/developer/1735309625) |

## What reviewers say

### GasBook

[App page](https://appshunter.io/ios/app/gasbook/id1628532525)

This app helps anaesthetic and ICM trainees log their training data for RCOA reports. It simplifies tracking TIVA and THRIVE usage with graphical summaries and detailed reports. Data can be backed up to iCloud and exported in Excel or PDF formats.

**Highlights:** RCOA training report data gathering, TIVA and THRIVE usage logging, Graphical specialty breakdown, Customizable quick entry options, Detailed report filtering, iCloud automatic backup, Excel and PDF export

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Subscription | $5.99 | per year |
| Buy Me A Coffee | $6.99 | one-time |
| Coffee For The Team | $9.99 | one-time |


### Fexillon Platform

[App page](https://appshunter.io/ios/app/fexillon-platform/id6479253228)

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

**In-app purchases:** none


## Frequently asked questions

### Is GasBook free?

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

### Is Fexillon Platform free?

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

### Do GasBook or Fexillon Platform have ads?

Neither GasBook nor Fexillon Platform shows ads.

### Which is updated more often, GasBook or Fexillon Platform?

GasBook ships an update every 5 weeks, and Fexillon Platform fortnightly. Most recently, GasBook was updated on November 3, 2026 and Fexillon Platform on November 4, 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.*