Although stylus pens offer many advantages, they also have some disadvantages. These include: a) Cost: High-quality stylus pens, especially those with advanced features like pressure sensitivity and tilt detection, can be expensive. b) Battery Life: Active stylus pens often require batteries, which can need replacing over time. c) Bulk: Some stylus pens can be bulkier than traditional pens, which may not be ideal for portability. d) Learning Curve: Using a stylus pen may require some practice to achieve the same level of accuracy and control as using a traditional pen or pencil. e) Compatibility: Not all stylus pens are compatible with all touchscreen devices, so checking compatibility before purchasing is important.