Appar was a prominent Tamil poet-saint and a key figure in the Shaiva tradition of South India during the 7th century. He is known for his devotional hymns dedicated to Lord Shiva, which are part of the Tevaram collection. His works emphasize love, devotion, and the importance of surrendering to the divine. Appar's poetry played a significant role in the Bhakti movement, which sought to promote personal devotion over ritualistic practices. He is often celebrated for his ability to convey deep spiritual experiences through simple yet profound language, making his teachings accessible to a wide audience.