Played the 0.5 on Android.
First of all, congratulations. You have a fine project on your hands. I do have some points to consider:
1 I almost missed the memory thing several times. If it's something really important maybe make it harder to miss it.
2 I dont think the map is really adding to the game. My experience was a linear story, but i had to waste time looking for the location to trigger the next event.
3 Theres a lot of waiting (story-wise) in between the events of a character story that makes all the stories able to happen in parallel, which makes more sense.