Fixed ruler bug for iPhone6s and iPhone6s plus.
Including five tools:
Flashlight(only for iPhone) with brightness adjustment, and morse code.
Protractor featured camera and gravity.
Inch and centimeter ruler.
Sound Meter with weighting-A,C,Z.
Spirit Level.
No advertisement.
3D Touch for iPhone6s and iPhone6s plus users.
And more features will be coming.

Special thanks to Icons8.

What’s New

Version 3.1.1

Fixed ruler bug for iPhone6s and iPhone6s plus.

Ratings and Reviews

4.6 out of 5
39 Ratings
39 Ratings
soapwaffle ,

Best of its kind

I have several measurement apps on my phone, but I've gone through a couple dozen to find the best for particular purposes. This one is the best in its class by far and worth paying for.
I work with a lot of small items and I'm bad at judging their size by sight or knowing how big something is by its description, this solves those issues quickly. I especially love that I can quickly toggle between metric and imperial measurements. I've made use of some of its other features too, but the measurement tool is fantastic on its own. I also appreciate the not white background.

Equizen ,

All in one practical tool!

I love ytools. It has come in handy so many times and one of few apps I actually use all the time. It's accurate and simple to use and has all the necessary tools to make my life easier. I am constantly misplacing my actual tools like ruler or protractor but I no longer have to fumble around. If I can't find it I can just reach for my phone and it's ytools to the rescue. In fact I love so much I am taking the time to write my very first review for an app. Thank you to the developer for making such an intuitive app!

Timhilt ,

Finally! A ruler that is accurate for iPhone 6 Plus.

This is the only ruler app that I've been able to find that is accurate for iPhone 6 Plus. Other ruler apps simply enlarge their rulers from the smaller iPhone screen, which gives inaccurate measurements on the larger Plus screen. This makes it worse than worthless - it makes it dangerous, because it gives you the wrong info. But this one is nice & clean & ACCURATE. What a concept. Thank you to the developer for solving the mystery of how to adapt rulers to larger screen iPhones.


Zuo Huang
2.2 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Simplified Chinese, Traditional Chinese

Age Rating
Rated 4+
© 2015 HuangZuo


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