I shouldn’t have to mention this and some already know but there seems to be a number of users these days moving from one brand of mobile device to another. They ask how to move their charts to the new device. One thing to do before you hand off your old phone or tablet to a relative or friend is to back up your charts on it. You should have been doing that regularly to begin with even just to be sure they don’t get lost if you lose your device or it crashes.
Current JyotishTools apps for mobile except Quick Jyotish which saves files in the text based QuickCharts format, saves charts as an SQLite database. They can be named differently depending on the app. They are cross compatible. And it doesn’t matter how they are saved because the apps can import them under any name. JyotishTools Android saves the charts as JTCharts.db, Tropical Skies as TSCharts.db and JyotishTools Pro as Charts.db. The way the database works is that it checks to see if it is the proper format before it begins importing. Also if you have an exact copy of a chart it will skip it so you don’t wind up with a duplicate.
Probably the easiest place to store your chart off the device is on the Google Cloud, Apple’s iCloud or Microsoft OneDrive. Then you can easily download the database again from there to your new device. On JyotishTools Android and Tropical Skies the tools that do this are under the menu as Backup/Restore. On JyotishTools Pro they are under Utilities in the Menu (those three lines at the upper left). Just follow the prompts.
In Closing, I would like to also mention that exciting new things are coming soon and in the works now.