# Arbiter vs FlowStack

The clearest difference is in-app purchases: FlowStack at none against Arbiter's 4. FlowStack also leads on iOS requirement (15.0 vs 18.4). On price, ads and device support there is nothing between them.

Both are free to download. Arbiter sells 4 one-off in-app purchases. FlowStack asks for nothing beyond the download.

## The numbers

| Metric | Arbiter | FlowStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (16 ratings)](https://appshunter.io/ios/app/arbiter-local-ai-chat/id6747954532/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free | — |
| Size | 40 MB | 3 MB |
| Requires iOS | 18.4 | **15.0** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Jordan Stone](https://appshunter.io/developer/1823554814) | [David Castellano](https://appshunter.io/developer/1892146693) |

## What reviewers say

### Arbiter

[App page](https://appshunter.io/ios/app/arbiter-local-ai-chat/id6747954532)

This privacy-focused AI assistant operates entirely on your device, offering offline functionality. Choose from various open-source models to suit your needs, with all conversations securely stored locally. It's ideal for brainstorming, proofreading, and exploring AI capabilities without data collection.

**Highlights:** On-device AI processing, Offline model execution, Document summarization, Privacy-focused design, Multiple AI model selection, Local data storage

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |
| Extra Large Tip | $19.99 | one-time |


### FlowStack

[App page](https://appshunter.io/ios/app/flowstack-ai/id6761936853)

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

**In-app purchases:** none


## Frequently asked questions

### Is Arbiter free?

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

### Is FlowStack free?

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

### Do Arbiter or FlowStack have ads?

Neither Arbiter nor FlowStack shows ads.

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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.*