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.

• 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!