# Specific Dimension vs Rewrite with AI

The clearest difference is in-app purchases: Specific Dimension at none against Rewrite with AI's 5. Specific Dimension also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.1). Rewrite with AI's advantage is update cadence (every 2 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. Rewrite with AI sells 5 in-app purchases, starting at $4.99 per 7 days. Specific Dimension asks for nothing beyond the download.

Specific Dimension ships an update every 2 months, Rewrite with AI every 2 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Specific Dimension | Rewrite with AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.2 (10 ratings)](https://appshunter.io/ios/app/rewrite-with-ai-grammar-check/id6739363989/reviews)** |
| Number of ratings | — | **10** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 53 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Specific Dimension](https://appshunter.io/developer/1470130216) | [Waqas Younis](https://appshunter.io/developer/1558244266) |

## What reviewers say

### Specific Dimension

[App page](https://appshunter.io/ios/app/specific-dimension/id1470130217)

**In-app purchases:** none


### Rewrite with AI

[App page](https://appshunter.io/ios/app/rewrite-with-ai-grammar-check/id6739363989)

This AI-powered writing assistant helps you effortlessly correct grammar, punctuation, and spelling. It offers smart suggestions and explanations to enhance your writing clarity and professionalism. Perfect for students, professionals, and content creators looking to refine their text.

**Highlights:** Grammar and punctuation correction, Spell checking, AI-powered smart suggestions, Synonym finder, Grammatical explanations, One-tap sharing

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Rewrite Pro: Weekly | $4.99 | per 7 days |
| AI Rewrite Pro: Monthly | $9.99 | per month |
| AI Rewrite Pro: Limited Offer | $19.99 | per year |
| AI Rewrite Pro: Annual | $29.99 | per year |
| AI Rewrite Pro: Annual Trial | $29.99 | per year |


## Frequently asked questions

### Is Specific Dimension free?

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

### Is Rewrite with AI free?

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

### Do Specific Dimension or Rewrite with AI have ads?

Rewrite with AI shows ads; Specific Dimension does not.

### Which is updated more often, Specific Dimension or Rewrite with AI?

Specific Dimension ships an update every 2 months, and Rewrite with AI every 2 weeks. Most recently, Specific Dimension was updated on October 20, 2026 and Rewrite with AI 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.*