# Fasting Mastery vs LogBook

Fasting Mastery and LogBook are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Fasting Mastery sells 3 in-app purchases, starting at $1.99 per month and LogBook sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Fasting Mastery | LogBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 45 MB | 43 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yasiru Abeygunawardana](https://appshunter.io/developer/1886383088) | [Gengolia Ltd.](https://appshunter.io/developer/1001109310) |

## What reviewers say

### Fasting Mastery

[App page](https://appshunter.io/ios/app/fasting-mastery/id6760818321)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Quarterly | $2.99 | per 3 months |
| Annual | $9.99 | per year |


### LogBook

[App page](https://appshunter.io/ios/app/logbook-habit-tracker-and-diary/id6804702053)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LogBook Pro Monthly | $2.99 | per month |
| LogBook Pro Yearly | $19.99 | per year |
| LogBook Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Fasting Mastery free?

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

### Is LogBook free?

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

### Do Fasting Mastery or LogBook have ads?

Neither Fasting Mastery nor LogBook shows ads.

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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.*