Write a review
If you have read one of the books or used the app, an honest review on the page where it is sold helps more than anything else I can do. What worked, what did not — just as it was. A star rating alone is fine. Reviews are how the next edition gets better.
I never ask for reviews in exchange for codes, gifts, or favours. Typos, bugs, and requests reach me faster by email: info@haidoroya.com.
The app
- わおん — Music Transcriber
Write a review on the App Store → Opens the App Store on your iPhone, iPad, or Mac, where you can rate and review in place.
The books in English
Each link opens the review form on Amazon.com (you will be asked to sign in). You can review a book wherever you bought it; Amazon only requires some purchase history on the account.
- Listen Like a Programmer: From Wave to Note with Mathematics and Code
Write a review on Amazon.com → Also sold on Amazon.co.jp: review there → - The Smooth Dance of Two Spheres: An Exact Calculation in Fluid Mechanics
Write a review on Amazon.com → Also sold on Amazon.co.jp: review there →
The Japanese titles have their own page: 感想を書く.