MEDIA
Book summary service flier publishes summary of #100 Days Challenge
On March 30, 2025 the book summary service flier published a summary of #100 Days Challenge: I Built 100 Apps in 100 Days and My Life Changed, by author and app developer Ami Otsuka (representative of Hundreds LLC). It is filed under Technology & IT; the summary was written by Hayato Ryu.
The recommendation opens with the line that the author, who says she goes all out in order to slack off, met ChatGPT in the middle of a university class.
The summary condenses the book into about ten minutes of reading. Its first key point begins with the author having been a fourth-year student in the habit of slacking off.
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About Ami Otsuka
Author and app developer; representative of Hundreds LLC. Starting in October 2023, while a student at Chuo University, she built an app a day with ChatGPT for 100 consecutive days and posted each one to X, a record published as #100 Days Challenge: I Built 100 Apps in 100 Days and My Life Changed (Nikkei BP, 2025). Named to Forbes JAPAN's Women In Tech 30 in 2026. She is now based in Thailand, writing, speaking and building apps.
