ChatShout

The accessibility app to read chat messages aloud with text-to-speech.
Variety of filtering options.
Merges multiple chats into one feed.
"White-List" enables:
* Push-to-play for each message (**p)
* Minimum length filtering (**[length])
* Play only messages with listed phrases
"Black-List" filters out messages with specific phrases.
Custom spoken intro & outro additions to messages.
Limits the size of cached queue in busy chats (1 - 50 messages).
Limit the maximum spoken duration of each message (3-60 seconds).
Stop & skip for each message.
Voices (multiple voices in one chat), custom speed & tone.
Voice selection (varies by OS) can be adjusted on a device:
System Settings>Accessibility>Spoken Content>Voices

Unlimited app usage must be supported by watching advertisements or by the In-App Purchase. App functions may be limited otherwise.

The app may require an advanced user capability to on your own obtain a channel's public identifier, a username on Twitch, usually visible in URL (Web Browser address line) when a channel's welcome page is open in a desktop or mobile browser.
The current version is limited to publicly visible chats on YouTube (YT) & Twitch (TW) live streams, does not require a registered account.

User must provide the id visible in the channel front page URL:
https://www.youtube.com/channel/[source_id]/...
https://www.twitch.tv/[source_id]/...

The app doesn't post or modify chat.
Synthesizes voice on the device (no data usage, no lag).
The app requires an internet connection to access chats.
The app doesn't share IDs or chat activity with Ads.
The publisher does not collect or sell personal data.
Ads collect & sell personal data, use extra network data.
This app shows full-screen ads on the chat screen.
In-app purchase disables ads for one installation.
Purchasing on-screen stars support development.

By installing this app, you preliminary agree with Privacy Policy and included Ads Data Collection Policy to collect and sell any information that you voluntarily input during interaction with ads to any interested party. In compliance with local laws, access to applicable Terms and Conditions will be available within each ad presentation.