Greetings, Allysa!
Thank you so much for bringing your question to the Disney Parks Moms Panel. I would love to help you with planning your magical trip to the Happiest Place on Earth!
As you mentioned, you can easily see all attractions at both Disneyland Park and Disney California Adventure Park right at your fingertips on the handy
Disneyland app. This app is my one-stop-shop for all things Disneyland while I'm on my vacation as well as planning it from home. Apart from the app, you can also easily view attraction height requirements online in a couple of ways. First, you can search each attraction within the Disneyland site to not only get height requirements but also a summary of the ride's story and thrill level.
You can also view height requirements on one handy page in the frequently asked questions section. Height requirements range from 32" to 54." Also keep in mind that any attraction that does NOT list a height requirement, means it is safe for even the youngest infant Guests. You will find that MOST attractions actually fall in this category and can be experienced by the entire family.
I hope this helps, and please return if you have any other questions. Have a magical day!
-Jennifer