ALL Settings are saved in your browser (localStorage), doesn't send to any web server.
ClientID:
Time format:
Use Local time
Use GMT time
API version:
V5
Helix
There are two versions of Twitch API you can choose, doesn't affect the tool's functionality as of now.
V5
V5 is the old API which has been announced by Twitch as depreciated
(For about 2 years when I am writing this text)
That means this API will be shutdown in a unknown time
This version of API doesn't require user authentication.
Helix
Helix is the currently official supported API.
Requires a token to use, which requires a Twitch account
This tool doesn't need any permission that can access your private information
Your token stays in your browser unless you are using a malicious browser (extension)