A free program for Android, by ImageTag.
The image watermark-textlogosticker batch watermark app lets you add multiple watermarks to multiple photos in a single selection. The app is compatible with both Android and iOS.
You can select multiple photos from your device and add the same watermark on all of them. The app also offers you the option to resize your photos and add a custom logo.
The app allows you to use multiple watermarks and customize them in terms of color, size, etc. It also supports both horizontal and vertical orientation.
The app offers you the option to add a text or sticker watermark to your photos and allows you to resize it and crop it. You can also add a custom logo and customize it in terms of color and size.