Some manufacturers offer SDKs to allow programmatic access to their beacons from iOS and Android. Most SDKs tend to be poorly implemented/documented, tie your code into using that particular beacon and rarely get updated to use newer platform APIs. Instead, when you can, we recommend you use the iOS and Android Bluetooth APIs directly to make your code independent of the beacon type. Alternatively, use an independent 3rd party library such as Radius Network’s iOS SDK and the EasiBeacon Android library.
However, there are some cases where you must use the manufacturer library. This is usually in cases where there the app needs to connect with the beacon (as opposed to only view advertising scans) to perform beacon specific things. The Sensoro SDK is an example where their private protocol (to prevent squatters) and sensor information can only be obtained via their SDK.