# Unifize vs Write A Book

The clearest difference is in-app purchases: Unifize at none against Write A Book's 3. Unifize also leads on iOS requirement (13.4 vs 26.1). Write A Book's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads 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. Unifize asks for nothing beyond the download.

Unifize ships an update every 3 weeks, Write A Book every 5 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Unifize | Write A Book |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | — | Freemium |
| Size | 74 MB | 17 MB |
| Requires iOS | **13.4** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Unifize Solutions Private Limited](https://appshunter.io/developer/1344822192) | [Otter Ridge Software, LLC](https://appshunter.io/developer/1825462213) |

## What reviewers say

### Unifize

[App page](https://appshunter.io/ios/app/unifize/id1344822193)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Unifize free?

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

### Is Write A Book free?

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

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

Neither Unifize nor Write A Book shows ads.

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

Unifize ships an update every 3 weeks, and Write A Book every 5 days. Most recently, Unifize was updated on October 6, 2026 and Write A Book 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.*