The Instax Neo 90 is alright. If you're unfamiliar with Fujifilm's Instax line, they are basically modern instant cameras in the same vein as Polaroids from the previous decades. However, unlike the last Polaroid films, they are 2:3 aspect ratio and come in two sizes. The Neo 90 shoots the size seen here, with credit card sized prints. Fuji has several cameras for this line, as well as a pocket sized printer that connects to your smartphone or Fuji camera. There is also the Instax Wide series, which I own and enjoy. However, the Instax Neo 90 is possibly the most advanced Fuji Instax camera; it is also one of the smallest. Pair that with retro styling and this camera sounds like a winner.
In practice, the little camera has its ups and downs. The autoexposure of the Neo 90 is a big improvement over the previous Instax cameras, and it seems easily tweakable with the light/dark options. The additional modes (double exposure, night, etc) seem to work OK, but selecting through and interpreting the icons can be mystifying without a manual. What's more, said features take some trial and error to use, which quickly becomes costly at roughly a dollar a print.
In the end, I'll be giving mine back. I continue to enjoy my Instax Wide, although the much smaller size of the Neo 90 is a large boon. But, at over $100 I'm not sold on the value of the camera. The Instax SP1 printer seems like a better option for my particular needs and has a similar price point. However, for those looking for a compact one stop shop or some slightly pricey novelty, the Neo 90 is a solid option and a good upgrade from Fuji's previous Instax options.