The ANT+ is a communication protocol using very low energy and able to broadcast the signal to several equipments at the same time.
Some devices support ANT+ natively, having an integrated ANT+ chipset. You can check it here
If so, you'll just need to install the following services available for free on the Google Play Store:
If your device hasn't got an integrated ANT+ chipset, it's possible to plug an ANT+ dongle. You'll also have to install ANT services:
Note: If you have ANT+ fitness equipment but you'd like to connect it with Bluetooth, you might be interested in this product: ANT+ CABLE. This CABLE (Connect ANT+ to Bluetooth Low Energy) converts ANT+ radio signal to the industry-standard Bluetooth Low Energy connections.