Complex sentence: Tru App supports a range of calling methods: calls over wired or wireless internet on Windows, Mac and Linux, calls over Wi-Fi, 3G and call-through, depending on the platform.
Split into simpler sentences: Tru App supports a range of calling methods: calls over wired or wireless internet on Windows, Mac and Linux. It supports calls over Wi-Fi, 3G and call-through, depending on the platform.