I have been looking for a digital plan book for while. Something I could share with other teachers. Last year I used Google Docs, but it did not have all the features I wanted.
Last week, I found Planbook.edu. There is a free version, but to use the features I want it cost $25 a year. Unless I find one that does the exactly the same thing for free, it looks like the one.
Most importantly, I wanted to be able to attach documents to my days. This does that. I can also share it. But I am guessing those teachers will need have a subscription too.
So far, this is the best option. If anyone knows of another digital plan book, please let me know. But, I have started making plans, which makes me happy.