Possible Clues:

• Commercial prefix with -gram or -matic
• Prefix with 'gram' for sharing shots on the weB
• Product prefix with -matic
• Reels' app, for short
• App that has stories, for short
• App with photo carousels
• App with stories and reels, briefly
• TikTok alternative, familiarly
• App with Reels
• App for pix