# GasBook vs DayNook

The clearest difference is update cadence: DayNook at weekly against GasBook's every 5 weeks. DayNook also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. GasBook sells 3 in-app purchases, starting at $5.99 per year and DayNook sells 1 in-app purchase, starting at $5.99 per 6 months. Whichever you choose, the download price is not the number that matters.

GasBook ships an update every 5 weeks, DayNook weekly. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GasBook | DayNook |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 65 MB | 27 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nicholas Clinch](https://appshunter.io/developer/1628532527) | [MARK CHRISTOPHER WINSTANLEY](https://appshunter.io/developer/1891970804) |

## 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 |


### DayNook

[App page](https://appshunter.io/ios/app/daynook/id6761894614)

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DayNook Premium | $5.99 | per 6 months |


## Frequently asked questions

### Is GasBook free?

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

### Is DayNook free?

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

### Do GasBook or DayNook have ads?

Neither GasBook nor DayNook shows ads.

### Which is updated more often, GasBook or DayNook?

GasBook ships an update every 5 weeks, and DayNook weekly. Most recently, GasBook was updated on November 3, 2026 and DayNook on October 24, 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.*