"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 3.3.3

* Bug fixes
* Updated support libraries
* Optional sharing of videos to improve video analysis

Ratings and Reviews

4.8 out of 5
13 Ratings

13 Ratings

HotDog420 ,

Great app

This is a great app. Thanks for all the improvements. I couldn’t get the sound to turn on and off to signal recording starting and finishing and I would suggest given get the user up to a minute or even 2 to spin their legs before recording starts. Overall definitely worth using

LucBessonFan ,

Just amazing.

Retul in your pocket

Machinegun_ak ,

Great tool for the budding enthusiast on a budget

If you never got fitted for your bike and you want a reasonably accurate way to gauge the quality of your bike fit, this tool is for you. For $6 you can get a good idea of your angles and measurements without breaking out your ruler or protractors. Found it relatively easy to use with a good guide though I wish the guide would give a diagram or photo example to show exactly where to measure from rather than just word descriptions. Does require a big clear space to place the camera far enough to capture video without too much perspective. Instructions recommended 10 ft but I found that it worked better around 11-12 ft. Also probably better to do this in a brightly lit room or outdoors so there is clearer video. I used this on my old iPhone 4 on IOS 7 without issue.


Double Dog Studios
74.9 MB
Health & Fitness

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.


English, German, Spanish

Age Rating
Rated 4+
© Double Dog Studios, LLC 2013-2018
In-App Purchases
  1. Pro Features $6.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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