# BPSim™ vs Siren Sounds Effects

The clearest difference is in-app purchases: BPSim™ at none against Siren Sounds Effects's 1. BPSim™ also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). Siren Sounds Effects's advantage is update cadence (every 2 months vs every 25 months). On price and device support there is nothing between them.

Both are free to download. Siren Sounds Effects sells 1 one-off in-app purchase. BPSim™ asks for nothing beyond the download.

BPSim™ ships an update every 25 months, Siren Sounds Effects every 2 months. The most recent releases landed on October 26, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | BPSim™ | Siren Sounds Effects |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 25 months | **Every 2 months** |
| Size | 62 MB | 35 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [KbPort](https://appshunter.io/developer/1005134942) | [Francis Zorrilla](https://appshunter.io/developer/449292242) |

## What reviewers say

### BPSim™

[App page](https://appshunter.io/ios/app/bpsim/id1014538587)

**Features:** macOS Compatibility

**In-app purchases:** none


### Siren Sounds Effects

[App page](https://appshunter.io/ios/app/siren-sounds-effects-go/id1185695826)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove the Ads | $3.99 | one-time |


## Frequently asked questions

### Is BPSim™ free?

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

### Is Siren Sounds Effects free?

Siren Sounds Effects is free to download, with in-app purchases available.

### Do BPSim™ or Siren Sounds Effects have ads?

Siren Sounds Effects shows ads; BPSim™ does not.

### Which is updated more often, BPSim™ or Siren Sounds Effects?

BPSim™ ships an update every 25 months, and Siren Sounds Effects every 2 months. Most recently, BPSim™ was updated on October 26, 2026 and Siren Sounds Effects on September 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*