This is an android app that can read Digikam's database. With this app you can view photos filtered by tags and\or albums which you have assigned using Digikam.

How to use it?

• Step 1. Place Digikam database in the folder where you store photos
• Step 2. Sync entire folder with your smartphone (ex. with Syncthing)
• Step 3. Install Digikam Companion, grant permission and voila!