In a test match, follow-on can be enforced by the team batting first if the team leads by 200 or more runs.
For example, if a team scores 502 runs in the first innings then the other team needs 303 runs to avoid follow-on.
This app is specifically developed to calculate the follow on in test cricket. There are four diferent types of follow on in test cricket. All fourr types are shown below.
Mostly 5-day tests are played between international teams. The follow-on in the 5-day test is 200 or more runs.
3-4 days tests are often considered unofficial or domestic tests. The follow on in 3-4 days test is 150 runs
The follow on in 2 days test is 100 runs
The follow-up in a day test is 75 runs.