Back Ext. Counter! vs Plank Timer

This App will support counting of Back Extension. The main function is counting of Back Extension. Main Function ・Count Back Extension ・Notifications ・Record Active Energy and Workouts to Apple Health. ・Save Results to Photo. ・View history. How to use ・Put iPhone on floor ・Tap start button. ・Keep your face close to iPhone screen. (Upper part) * ・Or count on iPhone screen tap. Active Energy ・Ex. METs 3.5, Weight 50 kg, Time 10 min. (3.5 - 1) x 50 x (10 / 60) x 1.05 = 21.86 kcal. Optional permission requests ・Apple Health: It is used to record data in Apple Health. ・Tracking: It is used to deliver personalized ads to you. ・Notifications: It is used to sending notifications. ・Photo Library: It is used to save image in Photo Library. Languages ・Japanese, English. *Dynamic Island devices not supported

Plank Timer is a dedicated app designed specifically to help you stick with planks. No login required—start your plank immediately. It's a simple training timer focused on features that keep you going. ■ Recommended for people who: ・Want to make planks a habit (do them daily) ・Want to track “Did I do it today?” and “How many seconds?” to beat their personal best ・Want their plank duration counted automatically ・Want to do strength training/core workouts efficiently in short time ・Prefer a simple app ・Want to strengthen your core for weight loss ■Main Features This app supports your motivation and habit formation with four simple features! ◯Plank Timer (Countdown) Set your target seconds and plank! ◯Stopwatch (Countup) Challenge yourself to see how many seconds you can plank! Aim for your personal best ◯ Motivation Boost with Record & History Management Track your progress with a plank history calendar, streak records, longest sessions, and cumulative plank time. ◯ Reminder Notifications to Support Continuity Get daily push notifications at your chosen time. ■ Contact Us For feature requests or bug reports, please contact us via the form below. https://forms.gle/t6fKosEPXR9Vctof8