# Rytability vs Letterly AI

The clearest difference is in-app purchases: Letterly AI at none against Rytability's 2. Letterly AI also leads on iOS requirement (15.1 vs 18.0). Rytability's advantage is update cadence (every 11 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Rytability sells 2 in-app purchases, starting at $8.99 per month. Letterly AI asks for nothing beyond the download.

Rytability ships an update every 11 days, Letterly AI every 2 months. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Rytability | Letterly AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/rytability/id6756857725/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 months |
| Monetization | Free | — |
| Size | 2.3 GB | 20 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rytech Labs LLC](https://appshunter.io/developer/1840291490) | [Ying Liu](https://appshunter.io/developer/6789572054) |

## What reviewers say

### Rytability

[App page](https://appshunter.io/ios/app/rytability/id6756857725)

This AI-powered writing companion enhances clarity and confidence for individuals with dyslexia and other writing challenges. It offers on-device processing to improve spelling, grammar, and sentence structure while preserving the user's authentic voice. The tool supports learning and independence without compromising privacy.

**Highlights:** AI-powered writing improvement, One-touch summarization, Highlighted edits with explanations, Unlimited AI usage, Fully offline functionality, Zero data collection, Speech-to-text transcription, Read aloud functionality

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rytability Monthly | $8.99 | per month |
| Rytability Yearly | $89.99 | per year |


### Letterly AI

[App page](https://appshunter.io/ios/app/letterly-ai/id6789572052)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rytability free?

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

### Is Letterly AI free?

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

### Do Rytability or Letterly AI have ads?

Neither Rytability nor Letterly AI shows ads.

### Which is updated more often, Rytability or Letterly AI?

Rytability ships an update every 11 days, and Letterly AI every 2 months. Most recently, Rytability was updated on October 28, 2026 and Letterly 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.*