You do not need an account on this server if you just want to use the app.
If you want to download your data or create blog entries, then you should register on this site. Please regard any posts you upload here as temporary. Registration is free and can be done at the register page.
If you want to keep your posts indefinitely, upload audio notes, and publish a Podcast, then you should create a WordPress site of your own and install the Psygraph plugin. If you really wish we could host your posts and audio file notes at this site, please consider making a donation so that we can hire an IT guy.