# AI Document Writer vs Instant Doc

The clearest difference is in-app purchases: Instant Doc at none against AI Document Writer's 3. Instant Doc also leads on update cadence (every 8 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. AI Document Writer sells 3 in-app purchases, starting at $4.99 per 7 days. Instant Doc asks for nothing beyond the download.

AI Document Writer ships an update monthly, Instant Doc every 8 days. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | AI Document Writer | Instant Doc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ai-document-writer/id6743824788/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 22 MB | 133 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CODELIXAI LLP](https://appshunter.io/developer/1804773470) | [Axel FLEURY](https://appshunter.io/developer/1561932445) |

## What reviewers say

### AI Document Writer

[App page](https://appshunter.io/ios/app/ai-document-writer/id6743824788)

Generate professional documents like legal agreements, business letters, and academic content in minutes. This AI-powered tool offers customizable templates and offline support for efficient content creation.

**Highlights:** Generate legal agreements, Create business letters, Produce academic content, Customizable templates, Offline document creation, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $4.99 | per 7 days |
| Monthly Plan | $14.99 | per month |
| Yearly Plan | $69.99 | per year |


### Instant Doc

[App page](https://appshunter.io/ios/app/instant-doc-pdf-scanner/id6761603073)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI Document Writer free?

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

### Is Instant Doc free?

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

### Do AI Document Writer or Instant Doc have ads?

Both AI Document Writer and Instant Doc show ads.

### Which is updated more often, AI Document Writer or Instant Doc?

AI Document Writer ships an update monthly, and Instant Doc every 8 days. Most recently, AI Document Writer was updated on October 15, 2026 and Instant Doc on October 18, 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.*