Hi, you have button in bottom right corner of the map, click on it to get fullscreen map and there you can zoom easy, change map types, change route type...
Hi, you can record as many workouts as you want, there is no any limit and workouts DO NOT overwrite. I will add Jpanese in the future. If you need any help you can contact me on support@zeopoxa.com and I will do my best to help you.