# Neutron AI vs Bookmark Write

The clearest difference is rating: Bookmark Write at 5.0 against Neutron AI's 3.7. Bookmark Write also leads on ads (none vs shown) and update cadence (every 4 days vs every 2 weeks). Neutron AI's advantage is in-app purchases (none vs 1) and ratings volume (6 vs 1). On price, monetization model, device support and iOS requirement there is nothing between them.

Both are free to download. Bookmark Write sells 1 in-app purchase, starting at $8.99 per month. Neutron AI asks for nothing beyond the download.

Bookmark Write holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Neutron AI has 6 ratings behind it against 1, so its average is the more settled of the two.

Neutron AI ships an update every 2 weeks, Bookmark Write every 4 days. The most recent releases landed on September 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Neutron AI | Bookmark Write |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (6 ratings)](https://appshunter.io/ios/app/neutron-ai/id6452385663/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bookmark-write/id6746372653/reviews)** |
| Number of ratings | **6** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 27 MB | 2 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Haynes Technology Group LLC](https://appshunter.io/developer/1698865651) | [Bookmark Cafe, Inc.](https://appshunter.io/developer/1815387130) |

## What reviewers say

### Neutron AI

[App page](https://appshunter.io/ios/app/neutron-ai/id6452385663)

Engage in conversations with custom AI personalities, generate images, analyze your surroundings with AI vision, and create AI-generated speech. Some features are free with no ads, while others have minimal ads.

**Highlights:** Custom AI personalities, AI image generation, AI vision for object identification and translation, AI speech synthesis, Ad-free AI texting, Privacy-focused with no sign-up

**In-app purchases:** none


### Bookmark Write

[App page](https://appshunter.io/ios/app/bookmark-write/id6746372653)

Enhance your writing with an AI-powered assistant that offers advanced suggestions, grammar checks, and style improvements.  Remember context and share your polished documents effortlessly across devices.

**Highlights:** AI writing suggestions, Grammar and style checks, Advanced AI memory, Contextual understanding, User-friendly interface, Easy document sharing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $8.99 | per month |


## Frequently asked questions

### Is Neutron AI free?

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

### Is Bookmark Write free?

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

### Which has better reviews, Neutron AI or Bookmark Write?

Bookmark Write is rated higher. Neutron AI averages 3.7 out of 5 from 6 ratings, while Bookmark Write averages 5.0 from 1 ratings.

### Do Neutron AI or Bookmark Write have ads?

Neutron AI shows ads; Bookmark Write does not.

### Which is updated more often, Neutron AI or Bookmark Write?

Neutron AI ships an update every 2 weeks, and Bookmark Write every 4 days. Most recently, Neutron AI was updated on September 25, 2026 and Bookmark Write on October 15, 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.*