I'm not sure if this is common knowledge around here as I've been an Android user for only about 2.5 months but I've recently stumbled on: https://myactivity.google.com/myactivity which displays basically everything I've done on my Pixel since I've received it. This includes: -Audio recordings and transcripts of every "OK Google" voice command. -Each app I've used and time stamps of when I used those apps. -Each search I've done in the Play Store and apps I've viewed from the Play Store. -Every location I've gone to. Fortunately, there are options to disable a lot of these. If you navigate to "Activity Controls" from the menu, you can disable: Web & App Activity (Save your search activity on apps and in browsers to make searches faster and get customized experiences in Search, Maps, Now, and other Google products.) Location History (Creates a private map of where you go with your signed-in devices in order to provide improved map searches, commute routes, and more) Device Information (Store your contacts, calendars, apps, and other device data to improve your experience across Google.) Voice & Audio Activity (Help recognize your voice and improve speech recognition by storing your voice and audio inputs to your account (for example, when you say "Ok Google" to do a voice search)) YouTube Search History (Store your YouTube searches to make your future searches faster and improve your recommendations.) YouTube Watch History (Make it easier to find your recently watched videos on YouTube and improve your recommendations.) Additional Notes: If you like using "OK Google" you cannot disable the Voice & Audio Activity as that will no longer allow "OK Google" to work. I'm not sure how I feel about this, but does anybody know if Apple retains the same information? I know that they have a "Frequent locations" but I'm fairly certain that information stays on the device only and does not get sent to Apple. I never used Siri (aside from initial testing and the very very random use) when I was an iPhone user as I didn't find Siri to be very good. But Google Assistant seems to work great and does things much faster than I could manually do so I find myself using it 5-10 times per day. I find it a little creepy that they have saved these audio recordings of everything that I've used "OK Google" for. I appreciate that Google does give us the option to delete this history, but who knows if Google is keeping this data while just "hiding" it from our view.