1. PicsArt. PicsArt is one of the best apps to combine photos on iPhone for free. It’s essentially a full-fledged photo editing app. In the app, select the Collage option to merge pictures in one frame. After selecting the pictures, use the Layout option present in the toolbar and choose a preferred layout to combine the selected images.
Your photo movie is almost ready. To save it, open the Export tab, click Save the video and go to Step 4. Step 3. Make a slideshow (manual mode) Step 3.1. Add your files to the program. Click Add Media Files and browse through your photos to choose the ones you want to add to your slideshow.Step 6: Publish and Share. Once the musical collage looks correct, click "Publish" to burn the collage all together. Kapwing will process your video layers and merge the audio from each video into one cohesive MP4. After your video is done, you can share the URL or download the file to publish on social media.