There are several apps that allow you to make calls without using your phone’s minutes. Here are some examples:

1. WhatsApp: This is a popular messaging app that also allows you to make voice and video calls over the internet. It uses your data connection or Wi-Fi to make calls, so it doesn’t use your phone’s minutes.
2. Skype: Skype is a popular video and voice calling app that allows you to make free calls to other Skype users over the internet. You can also make calls to mobile phones and landlines, but this requires purchasing credits.
3. Google Voice: This app allows you to make and receive calls over Wi-Fi or mobile data. You can also forward calls to your Google Voice number to any phone you choose.
4. Facebook Messenger: This app allows you to make voice and video calls over the internet to other Facebook Messenger users. It uses your data connection or Wi-Fi to make calls, so it doesn’t use your phone’s minutes.
5. Viber: This is another messaging app that also allows you to make free voice and video calls over the internet to other Viber users. You can also make calls to mobile phones and landlines, but this requires purchasing credits.

These are just a few examples of apps that allow you to make calls without using your phone’s minutes. There are many other similar apps available, so it’s worth exploring your options to find the one that works best for you.