Stylus manufacturers have been working hard to replicate the sensation of writing and sketching on tablets over the years, hence the handful of styli that support pressure sensing and palm rejection these days. Unfortunately, these pens dont come cheap, with the Apple Pencil asking for $99 but is still only compatible with the iPad Pro series. Even the other good styli with greater iPad compatibility start at around $50. However, Hong Kong-based GreenBulb has come up with a cunning s….Read more