# BL PFS vs SI Chat

The clearest difference is in-app purchases: BL PFS at none against SI Chat's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. SI Chat sells 2 in-app purchases, starting at $5.99 per 7 days. BL PFS asks for nothing beyond the download.

BL PFS ships an update every 3 weeks, SI Chat monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BL PFS | SI Chat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 16 MB | 13 MB |
| Requires iOS | **16.0** | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Banglalink](https://appshunter.io/developer/934133021) | [Yeasir Arafat](https://appshunter.io/developer/1853199338) |

## What reviewers say

### BL PFS

[App page](https://appshunter.io/ios/app/bl-pfs/id6738879848)

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

**In-app purchases:** none


### SI Chat

[App page](https://appshunter.io/ios/app/si-chat-ai-assistant-and-agent/id6755326607)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access - Weekly | $5.99 | per 7 days |
| Premium Access - Yearly | $39.99 | per year |


## Frequently asked questions

### Is BL PFS free?

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

### Is SI Chat free?

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

### Do BL PFS or SI Chat have ads?

Neither BL PFS nor SI Chat shows ads.

### Which is updated more often, BL PFS or SI Chat?

BL PFS ships an update every 3 weeks, and SI Chat monthly. Most recently, BL PFS was updated on October 25, 2026 and SI Chat 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.*