# Dr Diary vs GasBook

The clearest difference is in-app purchases: Dr Diary at none against GasBook's 3. Dr Diary also leads on device support (3 vs 1) and iOS requirement (12.0.0 vs 26.0). GasBook's advantage is review sentiment (50% vs 21%) and update cadence (monthly vs every 3 months). 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. Dr Diary asks for nothing beyond the download.

Dr Diary ships an update every 3 months, GasBook monthly. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Dr Diary | GasBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/gasbook/id1628532525/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 21.1% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | **Free** | Freemium |
| Size | 125 MB | 12 MB |
| Requires iOS | **12.0.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [British Medical Association (BMA)](https://appshunter.io/developer/499293884) | [Nicholas Clinch](https://appshunter.io/developer/1628532527) |

## What reviewers say

### Dr Diary

[App page](https://appshunter.io/ios/app/dr-diary/id1372708556)

This work diary helps UK doctors track job plan activities, understand work patterns, and manage professional development. It allows for detailed activity logging, personalized entries, and report generation to inform negotiations and appraisals.

**Highlights:** Offline activity logging, Personalized activity tracking, 15 or 30-minute time slots, Track multiple employers, Copy/paste daily/weekly activities, Summary and detailed reports, Share reports with employers

**Features:** macOS Compatibility

**In-app purchases:** none


### 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

**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 |


## Frequently asked questions

### Is Dr Diary free?

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

### Is GasBook free?

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

### Do Dr Diary or GasBook have ads?

Neither Dr Diary nor GasBook shows ads.

### Which is updated more often, Dr Diary or GasBook?

Dr Diary ships an update every 3 months, and GasBook monthly. Most recently, Dr Diary was updated on October 5, 2026 and GasBook on October 14, 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.*