Based on the user reviews of the Apple Pen app, here are three cons and pros: **Pros:** 1. Accurate and reliable digital handwriting experience with minimal lag. Users praise its smooth writing capabilities. 2. Universal app compatibility allows seamless use across iPhone and iPad devices. Easy to export and share notes. 3. Various customization options for font styles, colors, and sizes enhance note-taking experience. Users appreciate the flexibility. **Cons:** 1. Some users experience technical issues like crashing, freezing, or app becoming unresponsive during prolonged use. 2. Limited compatibility with certain Apple Pencil features, such as side-swiping gestures, which can be frustrating. 3. Limited organizational features for managing and categorizing notes, which can lead to clutter and disorganization.