"Overall, this app is pretty cool. Mostly because it’s actually useful..." - Ray Maker, DC blog

Bike Fast Fit is a video bike fitting system app. Use Bike Fast Fit to ride faster and longer, improve comfort and reduce risk of injury.

Capture a video clip from the side or front to dynamically record the rider’s position in motion. This provides more realistic picture of a rider’s actual pedal strokes and body positions than sitting statically on the bike.

Measure key riding position angles and distances using Bike Fast Fit's video analysis tools. Find the ideal riding position that's both powerful and comfortable through adjustments to seat height and position, handlebar height, and stem length.

Video Capture
Capture video clips easily with alignment aids and full camera control:
+ Super slo motion (iPhone 5s and up)
+ Side and front profile alignment aids
+ Self timer up to 30 seconds
+ Audible and visual timer alerts
+ Import and analyze a photo

Bike Fit Measurements
Analyze your riding position with eleven industry standard fit measurements:
+ Arm Angle
+ Foot Angle
+ Forearm Angle
+ Hip Angle
+ Knee Angle (min/max)
+ Knee Over Pedal
+ Seat Over Handlebars
+ Seat Tube Angle
+ Shoulder Angle
+ Shoulder to Handlebar
+ Torso Angle (climbing/touring/speed)

Bike Frame Measurements
Analyze bike setup with eight industry standard frame measurements:
+ Frame Reach
+ Frame Stack
+ Brake Levers
+ Handlebar Angle

General Purpose Measurements
Measure other angles and distances with eight additional measurement tools:
+ Angle
+ Angle Distance
+ Angle from Horizontal
+ Angle from Vertical
+ Gridlines
+ Horizontal Distance
+ Length
+ Vertical Distance

Bike Fit Report
Generate a Bike Fit Report detailing the measurements you have taken.
+ Email or share through cloud
+ Print report to AirPrinter
+ View pdf online

Share your bike fit measurements between devices or with friends and coaches through:
+ Apple iCloud
+ Dropbox
+ Google Drive

User Guide
Get the most out of the application with information on:
+ Bike Setup
+ Camera Setup
+ Body Marking
+ Measurement Tools
+ Application Features

Take your biking to the next level with Bike Fast Fit.

What’s New

Version 3.3.4

Fixed bugs related to iOS14.

Ratings and Reviews

4.7 out of 5
94 Ratings

94 Ratings

CfTorres ,

It works

As advertised

Ohyonghao ,

Very disappointed features removed

I am very disappointed that many features I used have been removed. My bike fit has been good for the past couple years since purchasing the app and have not used it until recently. Now I find that they have removed features such as playing a video with measurements.

Apparently some of these features now need to be purchased, but I'm not sure. One such was the report would actually give you information about usual angles and such the road or recreation riders might have.

Developer Response ,

Sorry you are having trouble with accessing all of the features of the app. Exporting a video with the measurement shown is available through the Export button and choosing Video with Overlays. This gives a great video with the measurements shown on top. We did add the ability for Bike Shops to purchase and upgrade and customize the reports with their logo and contact information. The bike fit report still shows all of the video measurements and the educational information about the common angles and such can be printed in the User Guide report.

nvponaienvpeinv ,

Inconsistent bugs

Deletes my video files at random. This is especially frustrating after I spend time and energy getting a good video, then spend more time and energy plotting my fit data points. Once I am ready to start analyzing my bike fit, the video and all snapshots disappear, never to be seen again. This has happened twice out of two videos. A solid hour of my life wasted on this app with nothing to show for it.

Save your money, your time and energy and don’t purchase this app.

App Privacy

The developer, Double Dog Studios, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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