Mjolnir

Apple iPhone: 4S, 5, 5C, 5S, 6, 6 Plus

Apple iPad: 2, 3, 4, Air, Air 2, Mini 1, Mini 2

Only works with iOS 8 and above.

Samsung Galaxy: S2 Plus, S3, S3 Mini, S4, S4 Active, S5 Mini

Samsung: Xcover 2, Nexus, Nexus S, Note 10.1, Pocket Plus, Tab 2 10.1, Transform Ultra, Ace 2 NFC

Sony: Xperia P

Asus: Nexus 7

Verizon: Droid Incredible 2

HTC: One (M7) Google Play Edition, One (M8), Incredible S, Desire Z, Sensation, Vision, EVO, EVO 3D

Motorola: Razor, Razor HD, Droid HD

Huawei: Nexus 6P, Ascend G300

LG: Nexus 5, Optimus V

OnePlus: One

Only works with Android 4.0 and above.

Sleipnir

Apple iPhone: 4S, 5, 5C, 5S, 6, 6 Plus, 6S, 6S Plus

Apple iPad: 2, 3, 4, Air, Air 2, Mini 1, Mini 2

Only works with iOS 8 and above.

Samsung Galaxy: S2, S3, S4, S4 Mini, Alpha, S5, S5 Mini, S5 Active, S6, S6 Edge, Note 3, Note 4, S7, S7 Edge

Samsung: Mega 6.3, Tab Pro

Asus: Nexus 7

Verizon: Galaxy S3, Galaxy S4, Galaxy S5

HTC: One (M7)

Motorola: Moto G 3rd gen, Moto X, Droid X, Droid Maxx

Huawei: Nexus 6P

LG: Nexus 5, G2, G3

OnePlus: One

Crosscall: Trekker-X1

Only works with Android 4.0 and above.