Fujifilm - Instax mini 99 vs Fujifilm - Instax SQUARE SQ40

The Instax mini 99 is the clear pick on raw spec strength, leading by 13.1 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.

Pick the Instax mini 99 if you care most about double exposure. The biggest gaps in its favor are double exposure.

Pick the Instax SQUARE SQ40 if you care most about film format. Its strongest claims are film format.

Both ship with comparable hybrid (digital + print), so those specs don't separate the two — focus on the differences below.

Bottom line: the Instax mini 99 is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.