On the plus side, the tape's translucency and ripped edges is pretty similar to the real thing! There are lots of colours and designs, and it's quite fun if you want to add some simple text to a photograph.
However, I found the interface of the washi app pretty basic compared to others I've used, and so I just stuck to adding a basic strip and some text. That was easy enough to figure out, although there didn't seem to be the function to move a strip once you'd added it - you had to delete and start over. There are additional functions I couldn't quite grasp or lost the will to try. Their choice of fonts are also not my favourite (you can see 4 of the 6 available in these photos), but you could have fun framing the photo instead.
Would you buy it? Or do you think it is too gimmicky?
PS New washi tape designs here.