Readwise seems very useful to me since I already use Instapaper. Since you're here, I was hoping to ask some questions:
1. Have you considered some way to add Instapaper-like parsing and highlighting into your service? It isn't cheap paying for two subscriptions with Instapaper reverting back to a $30/year subscription for my internet highlighting/notes plus your subscription.
2. From the website, it seems like you already have spaced repetition. What are you hoping to add?
3. What spacing repetition algorithm are you using? SM?
1. Have you considered some way to add Instapaper-like parsing and highlighting into your service? It isn't cheap paying for two subscriptions with Instapaper reverting back to a $30/year subscription for my internet highlighting/notes plus your subscription.
2. From the website, it seems like you already have spaced repetition. What are you hoping to add?
3. What spacing repetition algorithm are you using? SM?