Genea.app

Genea is a privacy by design and open source tool anyone can use to author or edit their family tree. Your data is formatted following the GEDCOM specifications so it can be exchanged with other genealogy services. All processing is done in the browser, leaving you in control on where to save your data, avoiding any type of vendor lock-in.

You can use Genea both on your mobile devices as well as on your desktop. The changes you make are persistently stored on your device. To transfer the data between devices, be sure to save the GEDCOM file when you are done and exchange it for example via e-mail or using a cloud service like Dropbox.