Calculator² ad-free upgrade free for Windows Phone for next 20 hours


One of the most popular Windows Phone apps is Calculator², with a ton of features designed to help anyone who needs some serious math problems solved. Earlier this morning its developer Richard Walters sent us a note that the program's in-app purchase feature will be free to use for about the next 20 hours or so.

The deal allows users to unlock the app so that no ads show up while using the calculator, while also adding a background task for automatically updating the exchange rates.

We mentioned that the app was pretty popular, but how popular is it? Well, Walters told us this morning that the previous version of Calculator² for Windows Phone passed the one million downloads milestone last week. The Windows 8.1 version reached that same mark back in October.

However, that older Windows Phone version of the app will soon be removed from the store in favor of the current Calculator² app, which used to be called Calculator³. (Yes, we know it's a little confusing). The reason is that the newer version has been updated to become a universal app so that unlocking the in-app purchase will also work with its Windows 8.1 counterpart.

You can download the free Calculator² app right now from the Windows Phone Store and you can also get the Windows 8.1 version from the Windows Store.

QR: calculator2


Reader comments

Calculator² ad-free upgrade free for Windows Phone for next 20 hours


Have you tried TKalculator? It's my 1st pick, then this Calculator2 would be my second. Try the free version, it has no difference with the paid one, even it comes with no ad.

Not ad free at all, just downloaded from the link and get the banner ads at the top, uninstalled and back to stock calc.

After you have downloaded the app, you should swipe to the left. At the bottom, you will see an option to perform an in-app purchase. For the next 20 hours you don't have to pay for this purchase! Just click 'ok' on the payment overview (I just did it myself, and it worked!)

open the app, swipe left, choose upgrade and you'll see that the upgrade to ad-free version will be available for free

Yea percentage. Like an inbuilt formula, all you'd need to give the app is the original price and the discount and the app would give you the final price. I know the Tax+ and Tax- buttons but it's a bit of drag to go to settings to change the % every time you need it.

Also, a simple Del key in the calculator would be a nice addon.

Obviously it doesn't, but practically all apps on WP require tons of permissions they don't really need.  It's a sign of the immaturity of the platform.

I have unlocked the ad free version right now in my windows 8.1 (I'm in India).... It's really free free free.....

The only thing that frustrates me about this app is that it's takes longer to launch than the default calculator.

Oh well, maybe some users are getting it free and some are not. It's worth 1.49 anyway. Win some and you lose some

It was for me too, so I uninstalled it on Windows 8.1, installed it on WP8.1, upgraded for free there, and lastly installed on Windows 8.1. Then no ads (or upgrade option) on any device!

The windows app says $1.49 but if you already disabled adds in windows phone app it doesn't process purchase and adds disapear. 

I'm still using the calculator³. It's the same app as calculator². No ads as well. I liked the live tile thing in the calculator selection as well. So didn't switch.

does the calculator³ still exist? I've been using since the calculator³, and *since the time that I couldn't remember* it forced me to upgrade to calculator². So does it mean that you didn't update the app since then?

As well maybe, but does anyone care about the "Requires?" Microphone, Pictures, Dialer? How in Earth are they needed by a calculator? Microphone possible for speech input, but the others...


Was able to download and get the free upgrade to be add-less.  But... the app crashes on my Nokia 1520 (8.1) whenever I press any of the calculator buttons.  Tried killing app and restarting, but no luck.  Oh well.

It is a great so. Thing is, I don't use a calculator very much and use either my head or just need a simple one. But it is really Nic calculator app. I tried calculator apps and it is good. I realized I don't use them.

Haven't had any issues with the default calculator that comes with windows phone. What does this add that the default doesn't have?

I installed it just now, and tapped on the banner that said 'Upgrade free to the Pro version' after going into the settings, and it showed a $1.49 charge to my AT&T account -- guess I'll find out when I get my phone bill.  I'm sure it's worth the money though.

Same to me. With the problems with feedly I didn't get the message till today. The developer should put again the deal ;)

There's a free version! Microsofts calculator. Plus it already exists on your phone... Seriously though I wouldn't pay for a calculator app