Andal is the only female Alvar of the 12 Alvar saints of SouthIndia, who are known for their affiliation to Srivaishnava tradition of Hinduism. Goda Devi or Andal incarnated on this earth in the 98th year after the beginning of the Kali Era. She is credited with the great Tamil works of Thirupavai and Nachiar Tirumozhithat are still recited by devotees during the Winter festival season of Margazhi. Andal is known for her unwavering devotion to the Lord Vishnu, the God of the Srivaishnavas. TheSrivilliputhoor Temple is dedicated to her and marks her birthplace. Adopted by her father, the Alvar saint Periyalvar who found her as a baby, Andal avoided earthly marriage, the normal and expected path for women of her culture, to "marry" Vishnu, both spiritually and physically. In many places in India, particularly in Tamilnadu, Andal is treated more than a saint and as a form of God herself.

Andal is believed to have been discovered under a Tulsi(Basil) plant in the temple garden of Srivilliputtur, by a person named Vishnucitta who later became one of the most revered saints in Hinduism, Periyalvar. The child was named Kodhai. This is popularly thought to mean "a beautiful garland" in Tamil. She has been accepted as a reincarnation of Bhumi Devi (the Earth Goddess). She is considered to be bhooma devi avatar just after that of Sita (wife of Lord Rama, an incarnation of Vishnu, as described in the epic Ramayana). Kodhai was brought up by Vishnucitta. Kodhai grew up in an atmosphere of love and devotion. Vishnucitta doted on her in every respect, singing songs to her about Lord Vishnu; teaching her all the stories and philosophy he knew; and sharing with her his love for Tamil poetry. As Kodhai grew into a beautiful maiden, her love and devotion for the Lord grew to the extent that she decided to marry none but the Lord Himself only. As days progressed, her resolve strengthened and she started to live in a dream world with her beloved Lord and was constantly fantasizing about marrying Him.

Vishnucitta had the responsibility of delivering flower garlands to the Lord's temple, everyday. Kodhai made these garlands and sent it to her beloved Lord through her father. Eventually she started acting unusual by wearing the flower garland which was meant to be offered to the Lord. This is generally considered sacrilege in Hinduism because the scriptures teach the devotees not to offer to the Lord, a thing that has already been used by a human being. However, Kodhai felt she should test to see how the garland suited her and only if it did, she should offer it to the Lord. One day, she was caught red-handed by her father in this strange act, and as an orthodox devotee he was extremely upset. He rebuked her and told her not to repeat the sacrilegious act in the future. Frightened and apologetic, Kodhai made a new garland for the offering that day. Legend says that that very night the Lord appeared to Vishnucitta in his dream and asked him why he had discarded Kodhai's garland instead of offering it to Him. The Lord is believed to have told Vishnucitta that He had whole-heartedly accepted Kodhai's offering all this time. This moved Vishnucitta so much even as he started to realize the Divine Love that existed between the Lord and his daughter. From this day on, Kodhai is believed to have been respected by the devotees and came to be known as "Andal", the girl who "ruled" over the Lord. She is also known by a phrase Soodi kodutha Sudarkodi which means "The bright creeper-like woman who gave her garlands after wearing them".

Her first work is the Thiruppavai, a collection of thirty verses in which Andal imagines herself to be a Gopi, an eternal associate of Lord Krishna in the spiritual world as a cowherd girl. She yearns to serve Him and achieve happiness not just in this birth, but for all eternity, and describes the religious vows (pavai) that she and her fellow cowherd girls will observe for this purpose.The second is the Nachiar Tirumozhi, a poem of 143 verses. Tirumozhi, literally meaning "Sacred Sayings", is a Tamil poetic style. "Nachiar" means Goddess, so the title means "Sacred Sayings of the Goddess." This poem fully reveals Andal's intense longing for Vishnu. During the month of Margazhi, discourses on the Tiruppavai in Tamil, Telugu, Kannada, Hindi take place all over India. The Andal Temple at Srivilliputhur is a twin temple, one of which is dedicated to Andal. Most of the south Indian Vishnu temples have a separate shrine for Andal. There are lot of festivals in the temple and other Vishnu temples in South India dedicated to her, the notable being the Pavai Nonbu in the Tamil month of Margazhi (December - January), Andal Thirukalyanam in Panguni, Pagalpathu, Rapathu, Adi Thiruvizha, when Andal is depicted seated in the lap of Ranganathar.