I 'm glad that Zoho Notebook supports the Apple Pencil for handwriting and sketching. There's a lot of research pointing to this mode of writing and drawing as being more conducive to creativity and introspection, which makes it ideal for journaling, but also for planning when using a planning template system: http://www.planetgorik.com/10-notebooks-help-organise-life/

One digital note app which has got this spot on, is zoom-notes.com. I use it for planning my weeks and days, by pasting the image of a planning template (like the ones you see in the link above) as the bottom layer of my drawing canvas, and writing on top of it (making sure that bottom template layer is locked). What makes this really work though, is that in zoom-notes they don't limit your zoom levels - and this allows me to fit my writing into the template very easily.

zoom-notes has many more great features, but unfortunately it's not very robust for typed notes, their desktop app is buggy, and their document sync is quirky. Still, it's excellent for handwriting and sketching, and their lockable layers is perfect for using a planning template. They have a Lite version that you can try out. They support the Apple Pencil quite well, amongst many other stylii.  

Needless to say, I would love to see Zoho Notebook's sketching capability support:

1) A bottom (lockable) layer where you can put a template there (by simply pasting an image) and/or 

2) The ability to lock a pasted image. 

Either method would allow us to write freely on top of the template image. Oh and:

3) Allow enough zooming so that we can handwrite normally, but still fit our writing into the template. 

There's a lot more that could be done on the handwritten notes/sketching side of things, but just having the above capabilities would be a great start as it would unleash our usage of Zoho Notebook for this sort of effective planning.