"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

4.2 out of 5
31 Ratings

31 Ratings

Geo5137 ,

Early Days

Just started with this app. The principles seem sound as an affordable means of bike fitting and I'm keen to see what my amateurish bike fit looks like. My first setup attempt today using frame measurements went well. Biggest problem was levelling my iPad since the levelling guide was trying to tip my iPad down by about 5 degrees. However, I think this is the way the system is meant to work. Now I know what I need to do to properly level my iPad, I'm looking forward to making progress though I know with only 30 fps, I will need to pedal slowly (cadence of 15 to 20 RPM) to get at least 3 degrees per frame resolution. Yes, I know that I will lose the natural dynamic aspect of cycling at ~80 RPM. If it all goes well, I will redo my review and hopefully give it 5.

Developer Response ,

Thanks for your support of Bike Fast Fit. The angle sensor can very sensitive, so if you focus on the left right tilt and aligning the tires with the overlay, that will give you a good recording.

pbhough ,

Great little App

Great app , does what it says really helps with getting same fit from bike to Bike.
Would be great if had few more TT bike measurements.
Only downside I've found is the explanations of the angles are in cm but the measurements are in inches or millimetres !

Developer Response ,

If you go to the main menu and go to the Settings there is an option to change the Default Units from Imperial to Metric. This will switch all of the measurements to cm and mm.

Greene_Kight ,

Fantastic App great UI

A full professional bike fit can cost £250. For £5 and the investment of a few hours this app gives you a really good (if not perfect) idea of how close your position is to the optimal. You do need to spend some time positioning stickers and positioning the iPhone and bike. It is fiddly and small errors will throw out measurements a bit, but ultimately you get a pretty good approximation of key angles of arm, torso and knee and you can see whether your knee is over the pedal axle when the cranks are at 90 degrees. Absolutely amazing value and really useful. One of the best apps I’ve ever bought.


Double Dog Studios
74.9 MB

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


English, German, Spanish

Age Rating
In-App Purchases
  1. Pro Features £4.99


  • Family Sharing

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

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