# Little Grey Book vs Humanize Studio

The clearest difference is in-app purchases: Little Grey Book at none against Humanize Studio's 4. Humanize Studio's advantage is update cadence (weekly vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Humanize Studio sells 4 in-app purchases, starting at $5.99 per 7 days. Little Grey Book asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Little Grey Book against 5.0 for Humanize Studio. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Little Grey Book ships an update every 3 months, Humanize Studio weekly. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Little Grey Book | Humanize Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/little-grey-book/id6499083339/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/humanize-studio-ai-humanizer/id6770280821/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 13 MB | 18 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [niv ben-porath](https://appshunter.io/developer/896424268) | [俊峰 罗](https://appshunter.io/developer/1803006171) |

## What reviewers say

### Little Grey Book

[App page](https://appshunter.io/ios/app/little-grey-book/id6499083339)

Enhance your Agatha Christie reading experience with a companion app. Track your progress, take notes with text scanning, and test your detective skills with a "Whodunnit Challenge." Explore the complete novel collection and personalize your reading journey.

**Highlights:** Whodunnit Challenge, Text scanning note-taking, Home screen widgets, Complete novel collection, Monthly read notifications, Personalization options, Book filtering by status

**Features:** macOS Compatibility

**In-app purchases:** none


### Humanize Studio

[App page](https://appshunter.io/ios/app/humanize-studio-ai-humanizer/id6770280821)

This app rewrites AI-generated text to sound more natural and includes a detector to assess its human-like quality. It prioritizes user privacy by not storing any text on its servers. Offers a free tier with daily limits and a Pro version for extended use.

**Highlights:** Rewrites AI text to sound natural, Built-in AI detector with human/AI score, Privacy-focused, no text storage, Preserves facts, quotes, and proper nouns, Supports pasting, typing, camera scan, and uploads, Offers tone and strength customization

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Humanize Studio Pro | $5.99 | per 7 days |
| Humanize Studio Pro | $6.99 | per month |
| Humanize Studio Pro | $6.99 | per 7 days |
| Humanize Studio Pro | $59.99 | per year |


## Frequently asked questions

### Is Little Grey Book free?

Little Grey Book is free to download, with no in-app purchases.

### Is Humanize Studio free?

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

### Which has better reviews, Little Grey Book or Humanize Studio?

Little Grey Book and Humanize Studio are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Little Grey Book or Humanize Studio have ads?

Neither Little Grey Book nor Humanize Studio shows ads.

### Which is updated more often, Little Grey Book or Humanize Studio?

Little Grey Book ships an update every 3 months, and Humanize Studio weekly. Most recently, Little Grey Book was updated on October 4, 2026 and Humanize Studio on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*