The best alternatives to TapTag are World Brush, Heya, and Travel AR for iPhone. If these 3 options don't work for you, we've listed a few more alternatives below.
World Brush is an AR experience where users can paint on the world for others to discover.Every painting is anonymous and only visible where it was created.
Heya lets you place eggs in AR and leave a secret inside. In a similar fashion to an Easter egg hunt, users then go to different locations to find these eggs and to reveal their secrets.
warpAR is a free augmented reality app for iOS that lets you distort the textures of the real world. Tap and drag to reshape buildings or turn murals into swirls of color using a set of liquify tools.
A privacy-focused, full resolution photo sharing app for groups. Consolidates your shared and personal albums into one, enabling you to collaborate on an album together whilst still being personalised. Cloud-synced and end-to-end encrypted for total privacy.