# Themis Black Box vs BlackBox Viewer

The clearest difference is review sentiment: Themis Black Box at 61% against BlackBox Viewer's 0%. Themis Black Box also leads on update cadence (every 5 weeks vs every 3 months). BlackBox Viewer's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, 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.

Themis Black Box ships an update every 5 weeks, BlackBox Viewer every 3 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | Themis Black Box | BlackBox Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/blackbox-viewer/id6450166195/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | **60.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 8 MB | 33 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yeontack Jeong](https://appshunter.io/developer/334795593) | [(주)이에스브이](https://appshunter.io/developer/1148482049) |

## What reviewers say

### Themis Black Box

[App page](https://appshunter.io/ios/app/themis-black-box/id1577907867)

This app transforms your smartphone into a high-quality dashcam, offering advanced recording features like 4K resolution, HDR, and image stabilization. It includes a built-in speedometer, GPS logging, and watermarking for speed and location data, with easy file management and sharing options.

**Highlights:** 4K, 1080p, 720p recording resolutions, UltraWide, Wide, Tele camera support, HDR and OIS recording, Built-in speedometer and level, GPS location and speed watermarking, Easy file management and sharing, Camera direction switching

**In-app purchases:** none


### BlackBox Viewer

[App page](https://appshunter.io/ios/app/blackbox-viewer/id6450166195)

View real-time video from your black box and manage its settings. Watch and download recorded footage from all channels. Configure recording, ADAS, audio, and Wi-Fi options.

**Highlights:** Real-time live video streaming, View and download recorded footage, Configure recording settings, Manage ADAS settings, Adjust audio and Wi-Fi settings

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

**In-app purchases:** none


## Frequently asked questions

### Is Themis Black Box free?

Themis Black Box is free to download, with no in-app purchases.

### Is BlackBox Viewer free?

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

### Do Themis Black Box or BlackBox Viewer have ads?

Themis Black Box shows ads; BlackBox Viewer does not.

### Which is updated more often, Themis Black Box or BlackBox Viewer?

Themis Black Box ships an update every 5 weeks, and BlackBox Viewer every 3 months. Most recently, Themis Black Box was updated on November 7, 2026 and BlackBox Viewer on November 7, 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.*