This app is run by Katie Irvine (Sort of Spiritual). Here's the whole picture, plainly:
What we store. Your email, a scrambled (hashed) version of your password we can never read back, and the birth data of charts you save (date, time, timezone, and the name you give each chart).
What we do with it. Show you your charts. That's it. Your birth data is sent to our chart-calculation provider (bodygraphchart.com) to generate the chart. If you tick the mailing-list box, Katie may email you about classes — you can unsubscribe anytime.
What we never do. Sell or share your data, or email you without that box ticked.
Deleting. The "delete my account" button in my charts permanently removes your account and every saved chart, immediately.
— placeholder wording, Katie's final copy to come —