iPad and other tablets have an LCD-based screen that has screen glare and a glass surface. reMarkable has a digital paper display without screen glare, and a higher-friction surface. The experience is very different and is immediately noticeable for paper people. The reMarkable does not have apps for web surfing, social media or games. It's a focused device around reading, writing and sketching with a paper-like experience.
We have recently written about how reMarkable is different from your regular tablet on our blog. Read more here.