Already a user of another pen (by another name) on my iPad, I have not been convinced by it. First, I found the quality of the writing / drawing of very rough: sensitivity is not very good and I was not able to draw exactly what I wanted. Clearly accuracy could be improved. Is it just my model or a more general problem? I do not know but at least this copy did not convince me.
The price is high for a stylus, acceptable for a branded product (Adonit generally good products) but significantly less views the observed limits. Add to that a fairly limited ecosystem of applications and you will get a meager two stars ...