Why there's no sign-up
Try it first. Decide later. We think that's the right order.
Making a photo book is the kind of thing you want to try before you commit to it. Will the tool be fiddly? Will your photos look right? Is it worth the time? The only way to know is to have a go.
So we made having a go the very first thing you can do. You land on the site, you click once, and you're making a book. No account to create, no email to hand over, no password, no "confirm your address before continuing". Nothing stands between you and finding out whether you like it.
We did this for two reasons.
The first is simply that a sign-up wall is a poor way to greet someone. Being asked to register before you're allowed to look is like a shop locking the door until you give your name. It's a small thing, but small things add up, and asking people to commit before they've seen anything is exactly backwards.
The second is about your data, and it's the more interesting one. We can't mishandle an account we never made. There's no profile of you here, no login, no list of who visited, because none of that has to exist for the thing to work. Your book lives in your own browser while you make it (see where your photos actually go), and the first time we need anything from you is the moment you decide to order. Not signing you up isn't just friendlier - it's the privacy feature that costs you nothing and asks you nothing.
There's an honest trade-off, and we'll name it. Because your book lives in your browser rather than in an account, it's tied to the device you made it on. It won't follow you to another computer on its own, and clearing your browser data will remove it. So if you make something you'd be sorry to lose, download the .rgbloom file - it's yours to keep, and you can open it again any time. That's the price of not having accounts, and we think it's a fair one, but you should know it's there.
Start designing, then decide. It's a better order to do things in, and it happens to be the more private one too.