Comparison

DashCam vs Themis Black Box

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DashCam

Record your car trips with GPS tracking and video capture, including speedometer and map overlays. Audio is recorded live, and videos can be exported or replayed. The lite version displays banners that can be removed with an in-app purchase.

Highlights
  • GPS tracking with video capture
  • Speedometer and map overlay
  • Live audio recording
  • Video export and playback
  • Automatic top speed adaptation
  • Configurable speed units and parameters
  • Car detection via OpenCV
Features
Read full description

GPS tracking with Video Capture, useful to record your car trips. Video contains speedometer and map, complete with audio recorded live from microphone, and can be exported to photo library and/or reproduced inside the app; Lite version displays banners; you can remove them via in app purchase. features: - top speed adapts automatically - speed units and many other parameters can be changed - shows horizont line and cars detected via opencv For ships: - you can configure app to connect to NMEA wifi and display OpenSeaMap with harbour data. The car detector is based on this article : http://abhishek4273.wordpress.com/2014/03/16/traincascade-and-car-detection-using-opencv/ thx to Abhishek Kumar Annamraju for his contribute This app uses gps in background when tracking is active (note: in background the video can't be recorded, a fixed frame will be shown in video). Continued use of GPS running in the background can dramatically decrease battery life.

About

Themis Black Box

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
Read full description

Thank you for visiting Themis Black Box app. * It is *** STRONGLY RECOMMENDED *** to use with a COOLER for smartphones for the following reasons. - Due to the nature of the app that processes the video in real time, the device will overheat quickly. - Smartphones will be installed and used in harsh environments such as car dashboards. In addition, to reduce the effect of car vibration, it is recommended to use a cradle that adsorbs to the windshield. * Features of Themis - Supports 4K, 1080p, 720p recording resolutions and various FPS. - Supports UltraWide, Wide, Tele cameras. - Supports HDR (High Dynamic Range) recording. - Supports OIS (Optical Image Stabilization). - Provides clear recorded video frames even when driving in tunnels or at night. *** However, the smartphone's autofocus feature may malfunction on roads or in locations that are too dark, or if there are foreign substances (e.g., smudges, rainwater, etc.) on the windshield. - Built-in speedometer. - Built-in level to help horizontally align the camera. - Various information such as date, time, speed and address are added as a watermark at the top of the recorded video. - Supports search for location where video recording started by linking with Apple Maps and Google Maps. (However, if the region is set to Korea or the language is set to Korean, KakaoMap and NAVER Map are also supported.) - Easily switch camera direction to inside or outside the car with a long tap on the screen. - Supports starting and stopping recording using volume buttons or Bluetooth shutter. - Supports a red mark on the recorded video and the file in the Recorded File Browser screen by double-tapping the screen during video recording so that users can easily find the event they want to remember. - Supports displaying a yellow mark on the recorded file the user wants on the Recorded File Browser screen. - Supports user-marked recorded files protection function. - Supports various screensaver modes. - Various device protection functions. - Supports AirDrop file transfer. - Supports transferring multiple files using data cable and Finder on Mac or iTunes on PC. - Supports Worldwide address. - Supports easy call function. *** However, calls using speakers are currently not supported, and recording is stopped during calls. For FAQs, please refer to the URL below. https://bit.ly/ThemisFAQen Please drive safely with Themis Black Box. * In the sample images of the recorded video included in the app screenshot, part of the license plate has been blurred to protect privacy.

Screenshots

DashCam1 screens
Themis Black Box4 screens

Verdict

The call

The clearest difference is review sentiment: Themis Black Box at 61% against DashCam's 0%. Themis Black Box also leads on in-app purchases (none vs 1). DashCam's advantage is iOS requirement (11.0 vs 16.0). On price, update cadence, ads and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on August 21, 2026 and September 23, 2026 respectively.

Scorecard3 real differences · 7 level
DashCam versus Themis Black Box: the parameters behind the verdict, then further details
ParameterDashCamThemis Black Box
PriceFreeFree
Rating2.6 (7 ratings) — better—
Positive reviews0.0% of reviews60.7% of reviews — better
Number of ratings7 — better—
Update frequencyEvery 5 weeksEvery 5 weeks
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS11.0 — better16.0
Further details — not scored
Size30 MB8 MB
Age rating4+4+
Developer3B Soft srlsYeontack Jeong

Customer experience

DashCam

All ratings7 ratings
Positive28.6%
Neutral28.6%
Negative42.9%
Written reviews8 reviews
Positive0.0%
Neutral12.5%
Negative87.5%

Themis Black Box

Written reviews28 reviews
Positive60.7%
Neutral14.3%
Negative25.0%

In-app purchases

1 purchases

DashCam

One-time1
  • No Banners And HD Video$3.99
None

Themis Black Box

No in-app purchases

Questions

Is DashCam free?
DashCam is free to download, with in-app purchases available.
Is Themis Black Box free?
Themis Black Box is free to download, with no in-app purchases.
Do DashCam or Themis Black Box have ads?
Both DashCam and Themis Black Box show ads.
Which is updated more often, DashCam or Themis Black Box?
DashCam ships an update every 5 weeks, and Themis Black Box every 5 weeks. Most recently, DashCam was updated on August 21, 2026 and Themis Black Box on September 23, 2026.

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