4K Slideshow Maker vs Memento

4K Slideshow Maker has no write-up on Specifiction yet; its figures are above.

Memento is a web and iOS service for groups preserving memories through Group Videos and Shared Albums. Organizers request video clips, collect contributions, arrange them, and customize a finished Group Video with ordering, trimming, colors, music, text, photos, and captions. A video can contain as many clips as needed and up to 60 minutes of content. Memento says a Group Video can be redone without an additional fee, while a Platinum Subscription allows downloading the result as an MP4. Shared Albums collect photos through invitations or QR codes, support review and approval, and produce customizable slideshows. Clips and completed videos are private by default, with sharing controlled through a unique viewing link. Contributors can record from smartphones, computers, or tablets. Shared Albums work on any device. The service is paid, with a three-day trial and no free plan. Shared Albums permit up to 10 photos during the trial, after which a paid subscription begins.