Frequently asked questions about Horoscho Chart. If your question isn’t answered here, please contact us.
About the app
What is Horoscho Chart?
Horoscho Chart (Astrologer’s ToolBox) is a professional astrology web app. It calculates natal charts, bi-wheels, tri-wheels & 5-wheels, timing tables, declination graphs, midpoints & harmonics, graphic ephemerides, void calendars, and more — all in your browser.
Do I need to install anything?
No. The app runs entirely in your web browser at skyfield.horoschola.jp. There is nothing to download or install, and it works on Windows, Mac, and tablets. A PC with a larger screen is recommended for chart work.
How accurate are the calculations?
The app is built on the astronomical computation library Skyfield and JPL’s high-precision ephemeris data — the same data used in professional astronomy. Positions agree with Swiss Ephemeris / astro.com within one arc-minute.
What languages does it support?
The app interface is available in English and Japanese. Manuals are provided in English (this site) and Japanese (iprema.net). For other languages, your browser’s automatic translation works well.
Purchase & payment
How much does it cost?
$120 USD / ¥18,000 JPY as a one-time purchase. There is no subscription and no recurring fee. Future updates are included.
How do I pay?
Payment is processed securely by Stripe (credit and debit cards). See the purchase page for details.
Can I get a refund?
Yes — we offer a 14-day money-back guarantee. If you are not satisfied for any reason, contact us within 14 days of purchase and we will refund your payment in full.
Login & account
When will I receive my login?
After payment, your personal ID and password are sent to the email address you used at checkout, usually within 24 hours.
I paid but haven’t received my login email.
First, please check your spam/junk folder. If it’s not there, contact us with the email address you used at checkout and we will resend it.
I forgot my password.
Contact us from the email address you purchased with, and we will reset it for you.
Can I use the app on multiple devices?
Yes. Your login works in any modern browser, so you can use the app on your PC, laptop, and tablet. Your account is personal — please don’t share it with others.
Support
How do I get support?
Support is provided by email through our contact form, in English or Japanese. We usually reply within a few days. Please note we do not offer phone support.