피터스(PTERS) is a membership management and scheduling app designed for businesses and freelancers. This app is only accessible with an internet connection. With the ability to manage schedules, trainers, and members, it is an all-in-one app that caters to the needs of fitness studios, language schools, music schools, and more.

The app's features include scheduling lessons for various activities like weight training, yoga, pilates, golf, billiards, vocal training, piano, flute, English conversation, Chinese conversation, Japanese conversation, and private tutoring. Members can book and cancel lessons, and trainers can manage their schedules, including their off-hours. Additionally, the app provides membership, group, and pass management features, allowing trainers to manage their students' progress and attendance.

The app's purpose is to provide an alternative to paid membership management software that often includes unnecessary features that do not align with business objectives. The app is accessible on both the web and mobile, and trainers receive push notifications when members make schedule changes.