Primo

Primo lets you make free phone calls to over 60 different countries and also send text messages, also free of charge so you don't have to spend your credit.

Call and send messages for free

A few years ago it was almost a dream to have a credit on the phone to make calls. We were always running low on credit and would just text, which were usually cheaper, or even miss calls just to say we were thinking of someone. Fortunately, we have evolved and today we usually have our own connection so that we can make calls with a flat rate of more or less minutes for free. And even if not, we can always fall back on our data plan to make VoIP calls from our phone. All we need is a calling app of the likes of Primo for Android, which is quite similar to WhatsApp but with certain differences.

How does it work?

The first thing you need to do is enter your mobile phone number and confirm your identity with a numeric code. Once you've gained access, you'll be asked if you want to load your entire contact list. If you agree, apart from showing all your friends' numbers in the app, you'll get 10 minutes of free calls. You can earn even more free minutes by recommending this tool to your friends, otherwise you need to buy credits. You can buy them through your profile to get them:

• A Primo phone number.
• A mailbox.
• An international calling plan.

Calls from Primo to Primo are free and unlimited. And you can also send text messages with the appropriate emoticons. According to the developers, you can call landlines from over 60 different countries for free, but you can also purchase credit to call an additional 200 destinations.

If you decide to try this app and download the APK file, you should know that you may be charged for performing certain actions. Check with your ISP before you get an unpleasant surprise.

Requirements and further information:

• Minimum operating system requirements: Android 4.1.
• The app offers in-app purchases.