"A brilliant app with tools to help you develop and learn different skills. The observation trainer is a great way to train your eyes to start watching your ball go down the lane"

Verity Crawley
PWBA Professional & SCAD Team Coach


"I use Tenpin Toolkit at PBA level and as a coach. The lane play portion is fantastic, with the ability to show getting the ball right quickly which is crucial on the PBA Tour. The observation trainer is really good for helping players watch the ball go off the deck and determining dominant eye to help alignment. One of the best $9.99 I have ever spent and the most realistic app in the world for what I am doing."

Jim Callahan
PBA Tour Manager at Storm Bowling


"Tenpin Toolkit is easily the best tool I've found to help bowlers of all levels improve their lane play & observation skills."

Andy Penny
Team England Head Coach


"By far the best tool I’ve used. Perfect for helping players visualize the ball path and how changes affect it. I’m constantly using Tenpin Toolkit during competition and practice sessions. A must for any serious coach or player on any level."

Ulf Hämnäs
Norwegian Bowling Federation Head Coach


A collection of useful tools for tenpin bowlers and coaches including:

- Angles & Targeting -

Adjust your targets to show a shot on the lane and work out the exact path the ball should take from the start of the approach. View your shots from above or a bowler's-eye view, add useful overlays to the lane diagram, and save shots to easily refer back to them later.

- Axis Tilt & Rotation -

Take a picture or video of your ball with a PAP (Positive Axis Point) marker and position it beneath the guide to get an approximate measurement of your axis tilt and rotation.

- Ball Speed & RPM -

Calculate the speed the ball travels down the lane. Use a video for greater accuracy and slow the video down to measure rev rate.

- Observation Trainer -

Watch shots traveling down a simulated lane to test and improve your ability to observe ball motion.

- Pattern Library

Instant access to details and diagrams of hundreds of oil patterns. You can also load any pattern into the Angles & Targeting tool, and plot your shot directly over the pattern to help you better plan how you're going to attack the lanes.

- Score Calculator -

A calculator for bowling scoring and a great way for beginners to learn how the scoring system works.

- Spare Names -

Just for fun, tap on the pins to see the nicknames of common spares.

What’s New

Version 1.6.3


Minor bugfix
Include Breakpoint Distance in Weber Cup live stats
Thanks to Kegel Specto for the amazing data!


Completely revamped interface in Angles & Targeting tool to allow for new and future features.

Shot History in Angles & Targeting including auto display of last 3 / 5 / 10 shots.

Social Sharing: Share Oil Patterns, Observation Trainer scores, and shots from the Angles & Targeting tool with your friends or via social media.

Weber Cup 2020 Oil Patterns

Ratings and Reviews

5.0 out of 5
23 Ratings

23 Ratings

TheBowlingLefty ,

Bowling IQ

This app is one of a kind. In our bowling world we don’t have many tools at our disposal like other sports. With this we can train our eyes and brains while also see instant data for speed and RPM. Being able to look up oil patters, which is constantly growing is an added bonus. Going to a tournament with an unknown pattern ahead. Download now so you’ll never be left in the gutter again.

Bowling Guys - John Struckman ,

Great bowling app!

I’ve been using the Tenpin Toolkit app for awhile now. It’s absolutely worth the $9.99 I spent in the App Store. As a bowler, pro shop manager, and coach I can use this tool in just about every aspect of what I do. Having the ability to use all of these tools right at my finger tips has proved to be extremely helpful!

jrbowlerparent ,

Great bowling app for junior bowlers

My son loves this app! The observation tool has helped him better understand ball motion. The pattern library and targeting tools provide great information for navigating sport patterns.


Internet Stuff Ltd
31.4 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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