To begin with the good: I really dig the story! And the actors? Amazing! Very well played and I was surprised to see so many faces that were familiar to me. The detective aspect of it all was also something I loved to a degree (it can become annoying, when you are missing certain words or clues).
Now that was the good (I have not played Her story, but I did buy/download the app on my cell phone), on to the bad. I did not have the "life hack" that the at the moment only other reviewer writes about in their review! Check it out, it will help you. Because one of the bad things of the game is that the videos you uncover all start wherever the word you searched for is ... only getting the first 5 results for your search is also limiting ... or rather expanding uncessarily the game time you need to get through the game.
While I love the actors in this and the fast forward/rewind button helps more than a few times, having just one side of a conversation without the replies ... it is not just weird but can get quite unnerving. It also would save one to rewatch the "same scene" a second time - although you might want to do that for the performances ... still there is something vital missing which makes this quite the ordeal.
I also would have loved to see the whole thing once I uncovered everything ... but I reckon one can do that on youtube ... although if you do that, you may also ask, why "play" this in the first place? I'll leave that up to you, know that you have all the clues (pun intended)