# Serial Box vs Sonar

The clearest difference is in-app purchases: Sonar at none against Serial Box's 1. Serial Box's advantage is iOS requirement (14.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Serial Box sells 1 one-off in-app purchase. Sonar asks for nothing beyond the download.

Serial Box ships an update monthly, Sonar every 3 weeks. The most recent releases landed on October 18, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Serial Box | Sonar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Size | 9 MB | 52 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mark Battistella](https://appshunter.io/developer/1584906978) | [Caue Mattos Silvestre](https://appshunter.io/developer/6780304569) |

## What reviewers say

### Serial Box

[App page](https://appshunter.io/ios/app/serial-box/id1634535698)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock extras | $1.99 | one-time |


### Sonar

[App page](https://appshunter.io/ios/app/sonar-hidden-camera-detector/id6788882245)

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

**In-app purchases:** none


## Frequently asked questions

### Is Serial Box free?

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

### Is Sonar free?

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

### Do Serial Box or Sonar have ads?

Neither Serial Box nor Sonar shows ads.

### Which is updated more often, Serial Box or Sonar?

Serial Box ships an update monthly, and Sonar every 3 weeks. Most recently, Serial Box was updated on October 18, 2026 and Sonar on October 4, 2026.

---

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