I just made this as a test and very quickly. When you sign up for smilebox there are two options, free or a 7 day free trial. If you select free I believe it is forever but you are very limited to designs and so forth. I had a membership in the past but let it drop so this time I signed in like a new person and used a different email address however when I opened it one of my old smileboxes was there, but I was still able to create a basic new one
Smilebox Playback