# AI Essay Optimization vs Write AI

The clearest difference is update cadence: AI Essay Optimization at every 6 days against Write AI's monthly. AI Essay Optimization also leads on iOS requirement (11.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AI Essay Optimization sells 3 in-app purchases, starting at $0.99 per 7 days and Write AI sells 5 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AI Essay Optimization ships an update every 6 days, Write AI monthly. The most recent releases landed on October 19, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AI Essay Optimization | Write AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (7 ratings)](https://appshunter.io/ios/app/write-ai-writing-assistant/id6450653057/reviews)** |
| Number of ratings | — | **7** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Monthly |
| Monetization | — | Freemium |
| Size | 34 MB | 15 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [立元 赵](https://appshunter.io/developer/1286588316) | [Eilon Krauthammer](https://appshunter.io/developer/963474325) |

## What reviewers say

### AI Essay Optimization

[App page](https://appshunter.io/ios/app/ai-essay-optimization-revision/id6447417135)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One week | $0.99 | per 7 days |
| one month | $2.99 | per month |
| One year | $12.99 | per year |


### Write AI

[App page](https://appshunter.io/ios/app/write-ai-writing-assistant/id6450653057)

Enhance your writing with AI-powered tools for grammar correction, social media content creation, tone adjustment, and translation. Generate professional emails, Instagram captions, and SEO-optimized text.

**Highlights:** Grammar check and fix, Social media content creation, Tone enhancement, Text translation, Summarizing articles, Professional email writing, Instagram caption generation, SEO content optimization

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Write AI Pro Weekly | $3.99 | per 7 days |
| Write AI Pro Monthly | $9.99 | per month |
| Write AI Pro Monthly | $9.99 | per month |
| Write AI 3 Tokens | $2.99 | one-time |
| Write AI 10 Tokens | $6.99 | one-time |


## Frequently asked questions

### Is AI Essay Optimization free?

AI Essay Optimization is free to download, with in-app purchases available.

### Is Write AI free?

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

### Do AI Essay Optimization or Write AI have ads?

Neither AI Essay Optimization nor Write AI shows ads.

### Which is updated more often, AI Essay Optimization or Write AI?

AI Essay Optimization ships an update every 6 days, and Write AI monthly. Most recently, AI Essay Optimization was updated on October 19, 2026 and Write AI on October 20, 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.*