The compatible Android devices for the Wistiki technology are :
-Smartphones running on Android 4.4 or Android 5 except the Samsung Galaxy S2 and the Motorola Moto G
-Tablets running on Android 4.4 or Android 5 except the Samsung Galaxy tab 3 7" screen
If you cannot download the app even though your device is compatible, the solution lies here
Why is the app compatible with Android 4.3 on the Play Store ?
Our developing teams are currently working on broadening compatibilities to Android 4.3. The app is available for devices running on Android 4.3 so that the Beta-testers may give us feedback.
Right now we can only commit to keep the app available and working on the compatible devices as mentionned above.
Why is the Moto G not compatible ?
The Moto G is the only device running on Android 4.4 and with Bluetooth Low Energy technology that is not compatible with the Wistiki technology. This is due to a flaw in the Bluetooth component integrated by this Smartphone's conceiver.