# Silo vs Kestrel

The clearest difference is in-app purchases: Silo at none against Kestrel's 4. Kestrel's advantage is update cadence (fortnightly vs every 15 months) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Kestrel sells 4 in-app purchases, starting at $3.99 per month. Silo asks for nothing beyond the download.

Silo ships an update every 15 months, Kestrel fortnightly. Both last shipped on October 28, 2026.

## The numbers

| Metric | Silo | Kestrel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/silo-private-ai-assistant/id6741248135/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 15 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 6 MB | 37 MB |
| Requires iOS | 18.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [Bixby Apps, LLC](https://appshunter.io/developer/436419517) | [Michael Wright](https://appshunter.io/developer/1895416865) |

## What reviewers say

### Silo

[App page](https://appshunter.io/ios/app/silo-private-ai-assistant/id6741248135)

This app allows you to run advanced AI language models directly on your iPhone without needing an internet connection or subscriptions. It prioritizes user privacy by keeping all conversations and data solely on your device. You can download and switch between various open-source models, including uncensored options.

**Highlights:** Runs AI models locally on iPhone, No internet connection required, Zero data collection or server requests, Supports multiple open-source LLMs, Import custom models from Hugging Face, Uncensored model output, Local chat history management

**In-app purchases:** none


### Kestrel

[App page](https://appshunter.io/ios/app/kestrel-ssh-and-server-manager/id6764020106)

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kestrel Pro | $3.99 | per month |
| Kestrel Pro Yearly | $24.99 | per year |
| Kestrel Suite | $39.99 | per year |
| Kestrel Pro Lifetime | $50.00 | one-time |


## Frequently asked questions

### Is Silo free?

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

### Is Kestrel free?

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

### Do Silo or Kestrel have ads?

Neither Silo nor Kestrel shows ads.

### Which is updated more often, Silo or Kestrel?

Silo ships an update every 15 months, and Kestrel fortnightly. Most recently, Silo was updated on October 28, 2026 and Kestrel on October 28, 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.*