Disappointed
I just bought the old version few days ago at 2800yen and now a newer, better version is selling at 1000yen. Indeed I don't care for the discount to 1000yen because apps do promotional discount from time to time. However, what you've done is you create a newer version, put it as a separate app, and sell it at 1/3 the price. How about us the original owners? We paid triple the price without any option to get the update (such as via an in-app purchase). You have left alone the owners of the original version who paid the premium price. Yes, you can get extra revenue, but this is not an ethical way of business. In the future I would never anything from 物書堂 ever again.