# yACK FAST vs Bluetooth V2.1 SPP Setup

The clearest difference is update cadence: Bluetooth V2.1 SPP Setup at every 2 weeks against yACK FAST's every 2 months. Bluetooth V2.1 SPP Setup also leads on iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

yACK FAST ships an update every 2 months, Bluetooth V2.1 SPP Setup every 2 weeks. The most recent releases landed on September 8, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | yACK FAST | Bluetooth V2.1 SPP Setup |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 9 MB | 18 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Serialio Ltd.](https://appshunter.io/developer/333178140) | [FUH CHERNG SHEU](https://appshunter.io/developer/1063937264) |

## What reviewers say

### yACK FAST

[App page](https://appshunter.io/ios/app/yack-fast/id1166008825)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bluetooth V2.1 SPP Setup

[App page](https://appshunter.io/ios/app/bluetooth-v21-spp-setup/id6449416841)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is yACK FAST free?

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

### Is Bluetooth V2.1 SPP Setup free?

Bluetooth V2.1 SPP Setup is free to download, with no in-app purchases.

### Do yACK FAST or Bluetooth V2.1 SPP Setup have ads?

Neither yACK FAST nor Bluetooth V2.1 SPP Setup shows ads.

### Which is updated more often, yACK FAST or Bluetooth V2.1 SPP Setup?

yACK FAST ships an update every 2 months, and Bluetooth V2.1 SPP Setup every 2 weeks. Most recently, yACK FAST was updated on September 8, 2026 and Bluetooth V2.1 SPP Setup on September 18, 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.*