# AI Sonic vs Sontheim

The clearest difference is in-app purchases: Sontheim at none against AI Sonic's 3. Sontheim also leads on update cadence (every 10 days vs every 7 months). AI Sonic's advantage is iOS requirement (13.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. AI Sonic sells 3 in-app purchases, starting at $9.99 per 7 days. Sontheim asks for nothing beyond the download.

AI Sonic ships an update every 7 months, Sontheim every 10 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AI Sonic | Sontheim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (724 ratings)](https://appshunter.io/ios/app/ai-sonic-chat-and-write-bot/id6449736342/reviews)** | — |
| Number of ratings | **724** | — |
| Positive reviews | 55.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 10 days** |
| Monetization | Freemium | — |
| Size | 30 MB | 39 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [EASTGATE (KENT) LTD](https://appshunter.io/developer/1687256824) | [Sontheim Industrie Elektronik GmbH](https://appshunter.io/developer/1276555700) |

## What reviewers say

### AI Sonic

[App page](https://appshunter.io/ios/app/ai-sonic-chat-and-write-bot/id6449736342)

This AI-powered writing assistant helps craft various types of content, from academic papers to professional documents. It adapts to your writing style, offers drafting assistance, and can summarize lengthy articles to boost productivity.

**Highlights:** AI-powered drafting, Article summarization, Writing style adaptation, Productivity enhancement, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $9.99 | per 7 days |
| Monthly Subscription | $14.99 | per month |
| Yearly Subscription | $49.99 | per year |

**What reviewers like**

- 👍 Helpful for various tasks
- 💡 Remarkable AI capabilities
- 🚀 Faster than ChatGPT
- 👍 Organized and easy to use

**What reviewers complain about**

- 🐛 App not working, no response from developer
- 🐛 Deceptive app posing as ChatSonic
- 🐛 Double billing issues
- 🐛 Difficult to operate
- 🚫 Limited free version features

**Reported bugs**

- App keeps asking to reset
- Freezing login screen
- Incompatibility with older devices

**Requested features**

- Digital artwork section
- Dark mode option
- More optimization and necessary functions


### Sontheim

[App page](https://appshunter.io/ios/app/sontheim/id6468039765)

**In-app purchases:** none


## Frequently asked questions

### Is AI Sonic free?

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

### Is Sontheim free?

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

### Do AI Sonic or Sontheim have ads?

Neither AI Sonic nor Sontheim shows ads.

### Which is updated more often, AI Sonic or Sontheim?

AI Sonic ships an update every 7 months, and Sontheim every 10 days. Most recently, AI Sonic was updated on October 24, 2026 and Sontheim on October 6, 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.*