[chrstphrknwtn]

Taste is subjective, but design can be objectively critiqued. Graphic design exists to change behaviour, and in this case the behaviour is to use apps based on recognition of a sign/symbol/icon.

In this case it seems reasonable to suggest that similar colour and shape is a poor design choice.

[rorykoehler]

I don't have trouble differentiating them. They also share a brand look and feel which is clearly what they were going for. I would question how good they are for people with visual impairment however this is probably a secondary concern for the designers. All the conversations here relate to taste not UX as far as I can tell. We don't have the data Google has to make UX observations.

[scsilver]

One thing I love about accounting for accessibility is that it applies to everyone. A rotating door can be used by a person without a hand, or a person with a coffee cup and a cellphone in each hand. With these changes, I will absolutely click the wrong app, I will click the wrong ones more when I am tired, or my screen brightness is low.

Hopefully an accessbility setting can help here.