BalusterPro 4+

Greg Gabrio

Designed for iPhone

    • 4.2 • 12 Ratings
    • $2.99

iPhone Screenshots


***Named one of the top 100 new home products for 2011 in This Old House magazine***

BalusterPro is a unique and handy tool designed for carpenters and woodworkers, but useful for do-it-yourselfers and homeowners alike. BalusterPro makes the chore of calculating spacing of handrail balusters a quick and elementary task.  It can also be used for any job requiring equal spacing between boards or slats.  Use for picket fences, bench/chair backs,decking or column flutes.

What users are saying:

Punch in staircase and handrail dimensions, choose the configuration, and this app saves you the tedium of calculating baluster spacing. Hallelujah.

This Old House Magazine

BalusterPro is an awesome app and can be used for a multitude of layout tasks, at your desk, on the job, in your car—wherever your phone goes, and it only costs a few bucks.

Gary Katz - Master finish carpenter and publisher of

BalusterPro makes building that stairway more heavenly

Instructions for Use:

BalusterPro offers calculations for six different common handrail situations which you may encounter.  First, tap the settings button to select your measurement input method, then select the desired type of baluster installation. Use the keypad or sliders to enter your measurements for ‘Run Length’ (distance between the newel posts) and the ‘Baluster Width.’  Finally, just drag the ‘Balusters Needed’ slider to see your required number of balusters. As you adjust the ‘Balusters Needed’ slider, the “Spacing Between Balusters” will simultaneously update. Stop when your ‘Spacing Between Balusters’ meets your specific code requirements. Tap the view button to see a list of all the centers and edges of the balusters. No longer will you need to keep pressing the add button on your traditional calculator to list your centers....they are all shown on one screen! It’s just that simple! You can display your measurements by selecting 1/16, 1/32, or metric on the main screen to determine your precision level. If desired you can also display your result down to 1/64. To do this, once you have done your calculation, simply tap the 'Spacing Between Balusters' result and if possible it will be further reduced down to 1/64 and displayed for 5 seconds. This is handy if you want to cut all your fillets at once as it nearly eliminates cumulative error. Tap the speak buttons at the bottoms of the list columns to have the app speak your measurements.


Check out my other construction related apps...StairBuilderPro for a stair stringer layout tool & TilePro for a simple tile layout tool.

Check out the video demo at my website to see BalusterPro in action.

What’s New

Version 3.0

This app has been updated by Apple to display the Apple Watch app icon.

Added a voice feature where the app will read your layout measurements to you one by one. Start the speak feature..pull your tape and go! No need to keep looking back at your phone.
Increased maximum stair angle.
Bug fixes

Ratings and Reviews

4.2 out of 5
12 Ratings

12 Ratings

PlainSpotter ,

Years of Consistent Successful Use

Apps don’t get more useful than this one. All those calculations nobody wants to make are made for you. Not only does this app work perfectly for balusters indoors and out, it gives you the layout for any project with spaced components. Then it reads you the numbers so you can mark with both hands.

CTH slim ,

Worth every penny!

I'm a residential carpenter and I love this app! It has saved me some much time and money while at the same time making for a much nicer final product. I not only use the app to lay-out balusters but also to lay-out wainscoting, coffered ceilings, shelving and even fencing.

Cyclops1 ,


This is a fantastic tool. As a finish carpenter I use it almost daily for a variety of layout tasks not just baluster spacing. An invaluable app I think is a must have for any carpenter. Also new voice feature is pretty cool.

App Privacy

The developer, Greg Gabrio, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

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


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

More By This Developer

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