技術書典 is an events app by 技術書典 with 5,000+ downloads (about 9.6K estimated). +10 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.
From the store listing: “Post-payment app for technical books See https://blog.techbookfest.org/2022/09/10/tbf13-payment/ for how to use”