ゴルフドゥ公式アプリ DO-PON is a free Android application developed by GOLFDO CO.LTD. It offers a wide range of coupons for golf clubs and equipment purchases. The app allows users to register their favorite stores for easy access to various coupons such as purchase assessment coupons and grip exchange coupons. The coupons cannot be used for backordered items, and the user must refer to the coupons' precautions listed on the coupon and the stores where the coupons can be used.

DO-PON offers a new feature called "Swing Checker" that enables users to shoot and record their swing at the practice range or golf course, take selfies by switching cameras, and draw straight lines or circles on the video to help check their form in areas of concern. The app also notifies users of sales and coupons automatically from their favorite stores. The store search function and Omikuji function allow users to search for stores and predict their fortune of the day.

Overall, DO-PON is an easy-to-use free app that offers a variety of coupons for golf equipment purchases and the new feature "Swing Checker" for recording and checking the user's golf swing. The app is ideal for golf enthusiasts who want to save money on their golf purchases.