AllyCloud is a wearable device that delivers painless, microneedle-based immunotherapy for children with allergic rhinitis. Combining a microfluidic electrolysis pump with skin pH sensors and machine learning, it adjusts allergen doses in real time based on individual response. The patch is soft, compact, and safe for all-day wear, reducing the need for frequent clinic visits and rigid treatment schedules. AllyCloud offers a more comfortable, precise, and child-friendly alternative to traditional allergy injections