Cloudacus

Cloudacus allows you to build and run an Appaserver application, including PredictBooks.
Sign up by creating a new application.
Appaserver supports passwordless logins. If you omit your password, then a link to your session will be emailed to you.
You have a legal expectation of privacy.
Both Appaserver and Cloudacus support Transport Layer Security (TLS).
This is a free service. You are providing no consideration. You are not entering into any contract.
If your application becomes dormant, then it will likely be removed.
Cloudacus applications store cookies on your computer for their intended purpose -- to recall data entry screens.