Installatron Remote is absolutely free for unlimited installs and imports, backups and restores, and up to three (3) upgrades per calendar month. Here's what you get for subscribing to Installatron Remote Premium for just $29/year:
Unlimited email and ticket-based support (for issues pertaining to Installatron Remote).
Unlimited installed app upgrades.
Unlimited installed app automatic upgrades (not available to non-subscribers).
Unlimited installed app clones (not available to non-subscribers).
Installatron branding no longer added in the footer of installed apps.