It's not possible because the game launches using Android's WebView which acts like a mini-browser. WebView apps store files in folders inaccessible without root and knowing the directory name used for your specific device. Different manufacturers use different names.
Viewing post in Town of Passion - Final Release + Bundle Pack comments
I know I'm but late like said in my you can transfer saves using the Android version. Because the Android version uses the Webview app which stores files in an inaccessible directory if you don't have root (administrative permissions) on your phone. To get around this limitation I use an app from Patreon called JoiPlay.