（旧）東京時層地図

Japan (JP) is currently the cheapest region, at approximately ¥81.28 — about 25% less than the US price of ¥108.09, and well below the global average of ¥121.76. Japan is not only the most affordable option but also the region where this historical map app's content is most complete and language support is best matched, making it the top recommended region to purchase from.

The US region is priced at approximately ¥108.09, while Japan is around ¥81.28 — a difference of about ¥26.81, with Japan at roughly 75% of the US price. The highest regional price globally is around ¥150.35, meaning switching from the most expensive region to Japan could save you approximately ¥69.07, a savings of nearly 46%.

You will need to register a Japanese Apple ID and top it up using an official Japan App Store gift card (iTunes カード). Japanese gift cards are available through Amazon Japan, Seven-Eleven and other convenience stores in Japan, as well as some authorized platforms. Once your account is funded, simply switch to it and search for the app in the App Store to complete your purchase.

This app is a historical map tool that displays layered geographic information of Tokyo across different eras, making it ideal for history researchers, urban planning enthusiasts, and travelers. Japan is the best region to purchase from — it offers the lowest price and the most native content experience. With a global average price of ¥121.76, this app sits in the mid-to-high price tier among mapping tools.