投資の収支管理帳 (Investment Expense Management App) is an iPhone application developed by Masaya Kato. It is a user-friendly app that allows users to easily manage their expenses related to investments such as stocks, forex, and bitcoin. By inputting the investment amount and settlement amount, the app automatically calculates the expenses and presents them in a graph for easy visualization.

The app offers several key features. Users can view their expenses on a monthly or yearly basis through graphs and lists. It also allows for the aggregation of investment and settlement amounts based on tags. Users can set a target amount for each expense and track how many times they have achieved their target on a monthly basis.

With its intuitive interface and comprehensive features, 投資の収支管理帳 is a valuable tool for individuals looking to effectively manage their investment expenses.