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By Darin Ferraro

This app is only available on the App Store for iOS devices.


PRUUF is designed to capture fast action video and sensor data like speed and distance, then automatically overlay that information onto your final video. The overlay is also animated to move and tilt based on g-force information, making PRUUF videos the closest thing to being there!


- Instantly record HD or 4K video with performance data overlays.
- Accurate time and distance estimates using combined sensors.
- External GPS support using optional Dual 150/160 XGPS bluetooth devices.
- Tap to start and stop then preview your video with data overlays in real-time.
- Auto and Fixed focus modes optimized for fast moving video capture in HD.
- Replace overlay logo with your own photo from camera roll.
- Animated overlay, g-force based movement collected during recording.
- Record widescreen HD video even while holding phone vertical!


- Speed, Altitude, Heading, Title Text, 1080 HD Video, G-force Animation.


- 4K Video Mode on supported devices (6s, 6s+)
- Custom Logo replacement with photo in camera roll.
- Remove Logo Option.

- 60 Ft Time.
- 0-60 Time.
- 0-100 Time.
- 60-130 Time.
- 1/4 Mile Time.
- Top Speed Hit.

Perfect for any automotive performance video, racing, measuring performance differences, or recording video while doing anything fast.

Compatible with iPhone 5s, iPhone 6, iPhone 6+, iPhone 6s, and iPhone 6s+

PRUUF uses GPS to measure speed and distance. Continued use of GPS can dramatically decrease battery life.

iPhone Screenshots

iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3

Customer Reviews


Finally a solid and consistent app for track days. Simple, straight forward, and easy to use in any environment. Love the fact that you can test manufacturer numbers. We always trust in the brands to tell us the truth when it comes down to specs of the vehicle. Finally with this app we can see if the advertised 0-60 times are actually true! Love it!

Keepin em honest..!

I swear I could go 70 on my longboard downhill.! Then I found this and realized I was going like 20... In the car on track day it was invaluable. Watching my replay as if it were a stage in Forza or Gran Turismo. Although yes,at times, it was crushingly honest, it was nice to come home with "Pruuf" of how big my track nuts are. Also works well to keep ur local DK super hero speed racer honest. Just ask for "Pruuf".

Nicely done!!! Upgrade to PRO ~ ASAP

This app is amazing! How did we not think of this sooner! I am technologically challenged, and even I think it's easy to use.
5 stars!
Upgrade to PRO is a must. I use this app to check to see if my new exhaust really gave me more performance. I will use it again for every new mod I put on my car.

View in iTunes
  • Free
  • Category: Photo & Video
  • Released:
  • Version: 1.0
  • Size: 2.3 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 9.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPad Air Wi-Fi + Cellular, iPad mini 2 Wi-Fi + Cellular, iPad Air 2 Wi-Fi + Cellular, iPad mini 3 Wi-Fi + Cellular, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro Wi-Fi + Cellular, iPad Wi-Fi + Cellular (5th generation), 12.9-inch iPad Pro Wi‑Fi + Cellular (2nd generation), and 10.5-inch iPad Pro Wi‑Fi + Cellular.

Customer Ratings

Current Version:

Top In-App Purchases

  1. Pro Upgrade$9.99