Math Notes, an app that allows users to handwrite or type math equations and get instant answers, has received updates with iOS 27, but the experience on iPhones is less than ideal. The app's integration with the operating system feels tacked on, with a finicky keyboard implementation that requires an absurd level of precision, hindering creative momentum. The author suggests that Math Notes is best on iPadOS, where the Apple Pencil and palm rejection make the experience natural and intuitive. The app's potential is further highlighted by the author's suggestion that Siri could be used to operate the math engine, but the current implementation falls short. To improve the iPhone experience, Apple is urged to make three critical quality-of-life updates before the final release: dedicated 'Variable' pills, a 'Link to Graph' context menu, and visual error indicators. Until these improvements are made, the author recommends using an iPad instead of a phone for the best Math Notes experience. The article concludes with a reflection on the potential of Siri and the need for Apple to bridge the gap between the math engine and the voice assistant.