Apps don't show up on Spotlight search [duplicate]
Anil (https://apple.stackexchange.com/users/40587/anil) answered in this question (Applications Don't Show Up in Spotlight). It worked for me on Sierra.
Here is his solution:
Turn off spotlight:
sudo mdutil -a -i off
Unload it:
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
Load It:
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
Turn on spotlight again:
sudo mdutil -a -i on