GasBook vs Fexillon Platform
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GasBook
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.
- 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
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GasBook is a native iOS logbook app for anaesthesia designed and written by an Anaesthetic Trainee. It’s specifically designed to gather data required for RCOA training reports and perfect for Anaesthetic Trainees and SAS Doctors. In addition to the LLP required information, it makes it easier to log and review use of TIVA and THRIVE. Key Features: * Graphical summaries for specialty breakdown * See your breakdown of TIVA v Volatile at a glance * Custom quick picker to speed up adding multiple regional techniques and procedures * Quick Add button to speed up adding multiple cases * Toggle for ICM Placements to streamline ICM data entry * Detailed Reports based on: * Specialty * Anaesthetic Mode & Airway * Level of Supervision * Teaching * Procedures * Regional Techniques * Priority * Time of Day * ICM activities * Specialty reports such as Neuro, Paeds, Cardiothoracics, Pain * Filter summaries and reports by preset filters, custom dates, and placements * Automatically backup data to your iCloud account for secure storage * Export and Import backups in excel format * Import excel files from LLP, Anaesthetics.app and Medberry logbooks * Export PDF Summary just like the LLP one * Fully Native Dark Mode Premium Features: * Choose a custom App Icon * Add custom procedure and regional techniques * Use custom operation names NB: The pain logging is based on the LLP logbook, rather than Faculty of Pain Medicine for ease of use for most anaesthetic trainees. Those wishing to specialise in Pain Medicine should check to ensure the Faculty of Pain Medicine's logbook isn't a compulsory requirement. Please remember to export backups of your logbook regularly. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Fexillon Platform
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Fexillon is a standards based enterprise platform for Owner Operators which supports the delivery and management of Buildings & Infrastructure from Strategy through to Operations. Our technology delivers on all key strategic initiatives for Owner Operators across the full asset lifecycle of buildings including Interoperability, Productivity, Sustainability and Health & Safety.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | GasBook | Fexillon Platform |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 65 MB | 105 MB |
| Age rating | 4+ | 4+ |
| Developer | Nicholas Clinch | Fexillon |
In-app purchases
GasBook
- Annual Subscription$5.991 Year
- Buy Me A Coffee$6.99
- Coffee For The Team$9.99
Fexillon Platform
No in-app purchases









