1, As for Android (both Bluetooth andWIFI), our best recommendation is recommend Torque;
2, Regarding IOS (WIFI), our best recommendation is Dash Command (but if you want to use the free version, your equipment should be "Jail Broken" one.)
3,About Symbian, we suggest OBDScope.
4,As for Window Mobile, we recommend OBD Gauge.
Please be advised that some equipment do not support our free Apps and you have to buy charged version from online store or Apps supplier. And different software and apps may have different features, there is no relation with the OBD device.