# Write A Book vs Brief

The clearest difference is update cadence: Write A Book at every 5 days against Brief's every 6 weeks. Brief's advantage is iOS requirement (17.0 vs 26.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Write A Book sells 3 in-app purchases, starting at $3.99 per month and Brief sells 1 in-app purchase, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Write A Book ships an update every 5 days, Brief every 6 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Write A Book | Brief |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/write-a-book-inkrun/id6753130654/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Monetization | Freemium | — |
| Size | 17 MB | 29 MB |
| Requires iOS | 26.1 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Otter Ridge Software, LLC](https://appshunter.io/developer/1825462213) | [Vasilii Polovnikov](https://appshunter.io/developer/1716165883) |

## What reviewers say

### Write A Book

[App page](https://appshunter.io/ios/app/write-a-book-inkrun/id6753130654)

This app helps writers track their word count, set goals, and build consistent writing habits. It offers a focus timer and data visualizations to motivate progress, with an optional subscription for advanced features like home screen widgets and unlimited projects.

**Highlights:** Word count tracking, Writing focus timer, Habit tracker, Goal setting, Data visualizations, Unlimited projects (Pro)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Inkrun Pro Monthly | $3.99 | per month |
| Inkrun Pro Annual | $19.99 | per year |
| Inkrun Pro Lifetime | $29.99 | one-time |


### Brief

[App page](https://appshunter.io/ios/app/brief-ai-summarizer/id6778920959)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | per 7 days |


## Frequently asked questions

### Is Write A Book free?

Write A Book is free to download, with in-app purchases available.

### Is Brief free?

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

### Do Write A Book or Brief have ads?

Neither Write A Book nor Brief shows ads.

### Which is updated more often, Write A Book or Brief?

Write A Book ships an update every 5 days, and Brief every 6 weeks. Most recently, Write A Book was updated on October 30, 2026 and Brief on November 5, 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.*