Zapya application is better then shareIT application .Given below is the steps to use zapya:
First, install the app on both devices, following the links given above.
Ensure that both devices are connected to the same Wi-Fi network.
Once the app has installed, launch it on both devices. On the Android device, tap Create Group.
Now, tap the menu (three horizontal lines) button in the top right, and tap on Connect to iOS Device. You'll see the name of the network and the host device there.
On the iOS device, you will first connect to the Wi-Fi network listed in Step 3, and then launch the Zapya app. Choose Search and join in the pop-up menu, and tap on the device name listed on the Android app.