Get Watcher uses 4chan API to predict the time until the next get. You can choose between three options: One board, Multiple boards, and Loop. Get Watcher is open source and is released under public domain.
One board: Get stats from only one board, like time until next get, posts per second, etc.
Multiple boards: It lists every board's stats in a table that you can sort. The table's contents are: the board, next get, time until that next get, and how many posts are left until it. To sort the list, click on one of the headers.
Loop: Constantly checks the first page for latest post and posts per second value until stopped.
Board: The board you want to get stats from.
Digits dropdown: Recurring digits at the end of a post number.
Example: 123444 has three recurring numbers at the end, 133333 has five.
Clear: Last digits to be always zero, locked on for boards that don't have dubs (/b/, /v/, /vg/, /vr/).
Example: 130000.
Palindrome: Post IDs that read the same forwards and backwards.
Example: 123321, 4132314.
Delay: How much delay in seconds there should be between calls to 4chan API, the documentation suggests no less than 10 seconds. With each call Get Watcher downloads about 25-30KB of JSON data.
Fast check: Instead of making two calls for both the first post and for an old post from page 10, it makes only one. Has different results, recommended on for multiple boards.