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SizeMyBike is the first iPhone bike fitting app. Essential to choose the right bike size and improve your position! Define your morphology with 6 body measures and SizeMyBike will compute the optimal geometry of your road bike or your mountain bike. Easy, fast and efficient!

The right fit is everything. SizeMyBike will help you dial in the perfect fit, to give you the absolute best comfort and performance.


“While it certainly won’t replace a proper bike fitting session at your local bike shop, the SizeMyBike app is a great place to start. The program asks you to input six body size measurements and then produces two extremely detailed sets of bike specifications.” Canadian Cycling, February 2011

“With SizeMyBike, the beginners will be able to choose the right bike size at the time of the purchase. Expert riders should use it to check if their current geometry is optimal. RATE 8/10.” CycloPassion, num 199, July 2010

“A quick test confirmed that dimensions were correct for a Mountain Bike.” O2BIKERS, Num 159, May 2010


- Fit your road bike as you ride: comfort, performance or urban
- Fit your MTB as you ride: Xcountry, All Mountain or 29er
- Multiple users management
- Export results to PDF file
- Save your riders database safely: import/export on your computer


Define your morphology with 6 body measures: inseam, height, torso, shoulder, arms and foot. Entering the measurements is easy and straight forward.

SizeMyBike algorithms rely on scientific papers and studies validated. SizeMyBike was tested by international well known cycling magazines such as Le Cycle, Canadian Cycling Magazine, CycloPassion, 02Bikers. All testers confirmed SizeMyBike accuracy. Keep in mind that taking your body measurements accurately is essential.Fitting errors result from inaccurate body measurements. Please examine carefully the help section in relation with this topic.

Three kind of bike fitting are available for road cycling: comfort, performance and urban. The seat tube length and the top tube length should allow to choose the right bicycle size. The saddle height, saddle setback and crank length should allow to optimize power and efficiency. Stem height and stem length should allow to optimize comfort and aerodynamic.

Three kinds of bikes are available for MTB: Xcountry, All Mountain or 29er. The frame size and the top-tube length should allow to choose the right bicycle size. The optimal saddle height, the crank length and the stem length are also computed.

Multi-user environment allows you to back up mates data & yours. Save your data safely: import or export your riders database on your computer using iTunes.

Share your bike measurement well fitted by SizeMyBike by email (PDF file). You can print wirelessly SizeMyBike results from your iPhone via AirPrint. You can also save the result on your computer via iTunes.

Keep in mind that professional bike fitting service costs about $150.

If you like SizeMyBike, please rate it 5-stars in iTunes every time an update comes out!

Follow us on Twitter or facebook for updates and development news.

Please feel free to contact us through our website. Feedback helps us to improve SizeMyBike.

What's New in Version 2.4.1

- New kind of bike: MTB 29er [2.4]
- New kind of bike: Urban [2.4]
- MTB frame size also given as S, M, L or XL [2.4]
- iPhone 5 optimisation [2.4]
- Minor bugs fixed [2.4.1]
- Social networking [2.4.1]

iPhone Screenshots

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Customer Reviews

Demystifies Fit

I am far from a cycling expert. I have had my bike fitted professionally and I have attempted it myself using sketchy, conflicting info I found online. This app is a fantastic, thorough tool that is far more useful than any site I have found. I wish there were more explanation of why certain measurements are taken, but it still does a great job.

Great (for a sцскея)

I don't mind paying for great apps and games. Anyone want to venture a guess as to why? Because I can't make them myself. This app asks for a 5 spot for info EASILY extracted from the internet. It's true, a fool and their money are soon parted LOL! And for people holding an idevice who don't know cm to in/can't figure how to googit *slap* that's the collective noise of palms hitting faces from whoever read that "review." PS if all info online is conflicting, what makes these guys the authority? Think about that.

Excellent App!

Does exactly what it's supposed to do. Simple and instructive, this app will make it easier to find that perfect bike for you!

View In iTunes
  • $4.99
  • Category: Sports
  • Updated: May 15, 2013
  • Version: 2.4.1
  • Size: 2.2 MB
  • Languages: English, French, Spanish
  • Seller: Chalaoux Francois-Regis

Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.

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