Also, pro-tip: host it on Heroku for ease if you're not anticipating a ton of traffic. Literally minutes to set up and almost no maintenance overhead going forward.

Django has everything a simple CRUD needs built-in, and migrations, which you don't need now, but will need if your project is successful. Highly recommended.

+1 for Django. It is well structured, battle tested and highly scalable. You get all the simplicity and "batteries included" features of Rails with much better performance and RESTful API support.