To access the CheckValve settings, tap the menu button and choose Settings from the main menu. As of version 2.0.6, the available settings are:
General
Show RCON passwords: Show the unmasked RCON password on any screen which includes it, such as the Add New Server and RCON Password dialogs
Validate new servers: When adding a new server, verify that CheckValve can connect to the specified IP and port
Server Information
Show server name: Show the name for each server in the server list
Use server nickname if available: For each server, if a nickname is specified in CheckValve, then show the nickname instead of the server name from the query
Show IP and Port: Show the IP address and listen port of each server in the server list
Show game and version: Show the game and version information for each server in the server list
Show map name: Show the current map for each server in the server list
Show number of players: Show the current and maximum number of players for each server in the server list
Show server tags: Show the server tags for each server in the server list
Show server ping: Show the total query time for each server in the server list
RCON
Warn if a command is unsafe: Show a confirmation dialog before sending a command via RCON which will cause the server to shutdown or restart, such as _restart, quit, or exit.
Show suggested commands: Show auto-complete suggestions while typing commands on the RCON screen
Include SourceMod commands: Include common SourceMod commands when showing auto-complete suggestions
Arrow keys show command history: Allow the up/down arrow keys to scroll through previously entered commands
Volume buttons adjust font size: Allow the up/down volume buttons to increase or decrease the font size of the RCON console.
Default font size: Set the default size of the text in the RCON console
Server Queries
Default query port: The default query port when adding a new server
Default query timeout: The default query timeout when adding a new server
Default Chat Relay
Chat Relay host: The IP or URL of the Chat Relay
Chat Relay port: The client listen port of the Chat Relay
Chat Relay password: The password for the Chat Relay
Notifications
Enable notifications: Enable status bar notifications when one or more servers fail to respond to a background query
Query frequency (minutes): The number of minutes between each background query to determine whether any servers are down
Play sound on notification: Play the default notification sound when showing a notification
Flash LED on notification: Blink the device's front LED when showing a notification
Vibrate on notification: Vibrate the device when showing a notification
Backups
Create a new backup: Create a new CheckValve backup file
Restore from a backup: Restore from an existing CheckValve backup file
Miscellaneous
Reset "Don't show me this again" options: Clear all "Don't show me this again" preferences
Clear previous Chat Relay hosts: Delete the saved list of previously used Chat Relay hosts from CheckValve