
Renderforest Slideshow Maker
8.2#3 in explainer video softwareFrom $8 a monthFree planAndroidiOSWebAPI
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It suits freelancers, startups, and small businesses making commercial, promotional, or marketing materials. It can also fit users who want templates and adjustable scene timing for photo-and-video slideshows.
You want what its maker publishes above — check its page for the details.