iPhone Screenshots


Kendo Dummy is a fun way to hone your Kendo reaction time. Just strap your iPhone to a kendo target where it won't get hit and start training! Kendo Dummy counts down with clear traffic signals but waits for a random time before flashing green! That's time to hit! After you hit, Kendo Dummy tells you how quick was your reaction and saves your best time for each session. You can use it to train your class and see who gets the best time - Kendo Dummy flashes your time in green each time you get better too! Ready... Hajime!

It works by using the motion sensors on the iPhone or iPod to feel a bump. You can lay the device on the table, prop it up against something or velcro an old case to a target. It works like magic when you try it!

An easy user interface and minimal words make Kendo Dummy a breeze to use. A setup screen (hit the 'i' button) lets you adjust how much motion triggers a hit and also lets you vary the delay time. It automatically restarts after each hit so that you can get ready and train again without touching the screen. A reset button lets you reset the "best" time too. This app is fun and easy to use, but also very accurate and practical for serious training.

What's New

Version 1.3.1

This update gets KendoDummy back on the App Store with a 64-bit architecture and support for all phone sizes. It also includes a referee whistle that is played when it's time to strike (UTE). I'm sorry about the temporary outage! Have fun and train hard.

-Chris Tilt, kendo 4-dan (with special thanks to my sensei Robert Stroud and Steve Choi.

Ratings and Reviews


Fun after keiko

This little app is a blast. Although it is kendo themed it is really just an easy (simple) device to measure reaction time. In a kendo context it is a lot of fun at post keiko get togethers to simply use sitting on the table top. I know that it can be attached to a kendo hitting dummy or even actual bogu as well. I am sure I would have made 7 dan faster if I had used this fun app during my post practice cool downs. It certainly has been fun with other kenshi.


Great update with Video Playback

I really like this version because it plays back the video of my strike and I can see my posture, if I’m dipping the shinai down when I go in, and how straight am I moving. Works better on my iPhone5 now too, using the whole screen.


Great for working on reaction speed!

This app is simple and does what it's supposed to. Settings for time and striking strength add to the varoety of practice one can use this for. Green light is always random so you can't get familiar with when to strike.

I've got my iPhone in an ID case attached to a lanyard. I hang it around rhe neck of an old Century bully dummy that I dress up in my bogu and I practice.

Works well. Don't know why it's being touted as a waste of money, perhaps some morons think this app is a game. It's not. READ THE DESCRIPTION!


Chris Tilt
2.5 MB
Requires iOS 8.4 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2010-2017 One Mind LLC


  • Family Sharing

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