The SYNCalc App is available for Apple phones and iPads and for Android devices - So many colours to choose from. 

SynCalc, works best when you don't have to set up your colours every time you use it. To make an account, verify your email and accept the Terms and Conditions and then you can store your selections if they need to be recovered at any time. We ask for your name, a verifiable email address and confirmation you are over 13 years old. We recommend that you choose a password you don't use on other devices. We won't send you spam messages - ever! 

Once signed in, you can synchronise your colours to the numbers in the calculator easily and quickly. Once you select them, they are locked in for your next use. You can also change them any time using the edit button on the top right of the screen.

We know that some synesthetes experience their number colours on a different colour background, so we made it easy to choose a colour for the tile background too. You can also change this anytime.

We know that synesthetes sometimes have different colours for large numbers, so we give you the ability to colourise the answer output. You can turn it on or off anytime you make a calculation. EASY.

Simply select Done in the top left hand corner. Your selections are saved across all your apple or android devices where you have installed SYNCalc.

When the outside world matches your inside world it can be an easier place to navigate. We hope you enjoy using the SYNCalc app as well as benefit from using it. If you don't, all you have to do is uninstall the SYNCalc from your phone.