# Sentiens vs BTS Chatter

The clearest difference is update cadence: Sentiens at every 2 days against BTS Chatter's every 2 weeks. BTS Chatter's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sentiens ships an update every 2 days, BTS Chatter every 2 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Sentiens | BTS Chatter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sentiens/id6765820679/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 145 MB | 16 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [BK Kejera](https://appshunter.io/developer/1707608873) | [Fabian Ackle](https://appshunter.io/developer/1865783956) |

## What reviewers say

### Sentiens

[App page](https://appshunter.io/ios/app/sentiens/id6765820679)

Create and customize your own private AI companion with distinct personalities, evolving memories, and adaptive behaviors. This offline platform offers deep control over your AI's intelligence and data ownership, running entirely on your device.

**Highlights:** Fully offline AI experience, Create and customize Sentien personalities, Dynamic, evolving memory system, Neural voice customization, Vision intelligence for image understanding, Choice of AI model sizes, Private by design with data ownership

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

**In-app purchases:** none


### 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 Sentiens free?

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

### Is BTS Chatter free?

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

### Do Sentiens or BTS Chatter have ads?

Neither Sentiens nor BTS Chatter shows ads.

### Which is updated more often, Sentiens or BTS Chatter?

Sentiens ships an update every 2 days, and BTS Chatter every 2 weeks. Most recently, Sentiens was updated on October 9, 2026 and BTS Chatter 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.*