# ai.assistant vs BTS Chatter

The clearest difference is in-app purchases: BTS Chatter at none against ai.assistant's 4. BTS Chatter also leads on update cadence (monthly vs every 2 months) and iOS requirement (17.0 vs 27.0). On price, ads and device support there is nothing between them.

Both are free to download. ai.assistant sells 4 in-app purchases, starting at $4.99 per 7 days. BTS Chatter asks for nothing beyond the download.

ai.assistant ships an update every 2 months, BTS Chatter monthly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ai.assistant | BTS Chatter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Freemium | — |
| Size | 8 MB | 17 MB |
| Requires iOS | 27.0 | **17.0** |
| Devices | iPhone, iPad, Mac | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [TRANSFINITE LLC](https://appshunter.io/developer/1561312044) | [Fabian Ackle](https://appshunter.io/developer/1865783956) |

## What reviewers say

### ai.assistant

[App page](https://appshunter.io/ios/app/aiassistant-ai-chat/id6759457807)

This AI companion helps you think, write, and organize with clarity using on-device models. It offers dedicated modes for writing, summarizing, explaining, planning, and brainstorming, with the ability to import PDFs and images for instant understanding.

**Highlights:** On-device AI processing, Dedicated chat modes (Write, Summarize, Explain, Plan, Brainstorm), PDF and image import for text extraction, Reusable AI-generated Outputs (Artifacts), Output Studio for format reshaping, Personalized reference Library

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ari+ Weekly | $4.99 | per 7 days |
| Ari+ Monthly | $9.99 | per month |
| Ari+ Yearly | $59.99 | per year |
| Ari+ Lifetime | $199.99 | one-time |


### BTS Chatter

[App page](https://appshunter.io/ios/app/bts-chatter/id6787178556)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ai.assistant free?

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

### Is BTS Chatter free?

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

### Do ai.assistant or BTS Chatter have ads?

Neither ai.assistant nor BTS Chatter shows ads.

### Which is updated more often, ai.assistant or BTS Chatter?

ai.assistant ships an update every 2 months, and BTS Chatter monthly. Most recently, ai.assistant was updated on October 31, 2026 and BTS Chatter 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.*