Plank Challenge is a dedicated timer app designed to assist users in achieving their multi-day fitness objectives, with a primary focus on the 30-day Plank Challenge. The app simplifies the process by automatically calculating daily targets and adjusting the timer accordingly for each day of the challenge.

Users can select from easy, medium, or hard difficulty levels, or create a custom challenge tailored to their fitness goals. Whether following a 30-day Plank Challenge or any other time-based fitness program, this app provides the necessary tools for tracking and progressing.

Additionally, Plank Challenge includes a reminder feature to prompt users to plank daily, with notifications sent a day after the last plank. The app respects user preferences by limiting reminders to only two more attempts if initially ignored, ensuring a non-intrusive experience.