# AI Keyboard vs RustSync

The clearest difference is chart position: AI Keyboard at #148 against RustSync's unranked. RustSync's advantage is device support (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AI Keyboard sells 12 in-app purchases, starting at $3.99 per 7 days and RustSync sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 14, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | AI Keyboard | RustSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (14K ratings)](https://appshunter.io/ios/app/ai-keyboard-smart-writing/id6446992925/reviews)** | — |
| Number of ratings | **14K** | — |
| Positive reviews | 61.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#148** | — |
| Size | 165 MB | 46 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Faliane Ltd.](https://appshunter.io/developer/1616512874) | [Arron SOILAND](https://appshunter.io/developer/6781906280) |

## What reviewers say

### AI Keyboard

[App page](https://appshunter.io/ios/app/ai-keyboard-smart-writing/id6446992925)

**Currently charting:** #148 Top Grossing · Productivity (US App Store)

This AI-powered assistant offers a suite of tools for writing, visual creation, and planning. It can generate text, images, tattoo designs, and captions, while also providing voice chat and personalized recommendations. Streamline your tasks and boost creativity with intelligent assistance.

**Highlights:** AI-powered chatbot for answers, Image generator from text descriptions, AI tattoo design creator, Prompt generator for creative ideas, Caption and hashtag generator for photos, Voice chat for hands-free operation, AI writer for long-form content

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Helper - 1 Weеk | $3.99 | per 7 days |
| AI Chat - 1 Weеk | $4.99 | per 7 days |
| AI Chatbot - 1 Week | $6.99 | per 7 days |
| Smart Writing Tool - Weekly | $7.99 | per 7 days |
| AI Bot - 1 Week | $8.99 | per 7 days |
| AI Keyboard: Weekly Access | $9.99 | per 7 days |
| AI Chatbot - 1 Week | $9.99 | per 7 days |
| AI Chatbot - 1 Month | $9.99 | per month |
| AI Writing Helper: 1 Month | $14.99 | per month |
| AI Assistant - 1 Year | $39.99 | per year |
| Smart Keyboard - Yearly Access | $49.99 | per year |
| AI Writing Assistant: Yearly | $59.99 | per year |

**What reviewers like**

- 👍 Works very well
- 🚀 Fast, furious, and accurate
- 💡 Excellent for writing and editing
- 👍 Helpful and informative
- 👍 Easy to use and navigate

**What reviewers complain about**

- 🐛 Misleading, doesn't work on Mac
- 🔒 Forces full keyboard access
- 💰 Expensive subscription, not worth the money
- 🐛 Unreliable, keeps crashing
- 🔒 Deceptive free trial and billing practices

**Reported bugs**

- Keyboard issues, slow and unresponsive
- Unexpected errors and app failures
- Subscription issues, unable to cancel
- Incompatibility with certain devices

**Requested features**

- Improve image generation capabilities
- Add more language support
- Provide better descriptions of subscription options
- Improve keyboard responsiveness and autocorrect
- Implement a true free trial period


### RustSync

[App page](https://appshunter.io/ios/app/rustsync/id6782820198)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 4 Licences | $6.99 | per month |
| 8 Licences | $13.99 | per month |
| 12 Licences | $20.99 | per month |
| 16 Licences | $27.99 | per month |


## Frequently asked questions

### Is AI Keyboard free?

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

### Is RustSync free?

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

### Do AI Keyboard or RustSync have ads?

Neither AI Keyboard nor RustSync shows ads.

### Which is updated more often, AI Keyboard or RustSync?

AI Keyboard ships an update every 3 weeks, and RustSync every 3 weeks. Most recently, AI Keyboard was updated on October 14, 2026 and RustSync on October 1, 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.*