Father) is a 2016 Indian Tamil-language independent drama film written and directed by Samuthirakani and Sasikumar plays a guest appearance.

Dhayalan teaches his son to be friendly to society, trust people, enjoy every moment of life, and do good to the community.

His ideology is to live a low-profile life because he understands if one is very good or very bad in any of the aspects, he attracts the attention of society.

Dhayalan also identifies the ability of Mayilvaganam to write poems, compile all his works and send them to a leading lyricist Pa Vijay.

Chakravarthy also joins Dhayalan's backyard hut for children when his father is not at home, and the trio becomes friends with Nandhini and Rashitha Bhanu.

Singaperumal's ideology is that dedication plus meditation plus concentration is equal to education and Chakravarthy tops 10th class with 99% and his father enrols him in one of the strictest higher secondary boarding schools in a distant locality.

But Kumaran, a famous doctor, informs Dhayalan that Chakravarthy already died 8 hours ago and was murdered by the School officials for complaining after a night-long torture.

In September 2015, Samuthirakani chose to postpone the production of his Kitna, after the lead actress Dhansika got an offer to appear in Pa. Ranjith's Kabali (2016).

[10][11] Behindwoods stated, "Appa has moments of greatness but because of its opinionated presentation, at no level, it gives you a good degree of satisfaction nor makes you accept the flaws that have been pinpointed".

[12] Sify.com labelled the film as "below average" and added "to conclude, Samuthirakani’s Appa has lost track as the director carried away by the message and missed the target by a mile".

[13] Baradwaj Rangan of the Hindu wrote "Samuthirakani has grown into a terrific actor, and he works consistently with good filmmakers — and you wonder if it isn’t time for him to look around between shots and pick up some tricks if he’s going to keep making movies.

"[14] The sequel to the film was announced by director Samuthirakani through his official Twitter account on 18 June 2018 on the eve of the Father's Day.

[17] The film is set to feature Samuthirakani and Thambi Ramaiah, with Namo Narayanan, Vignesh and Nasath in supporting roles; most of the cast members are retained in the sequel.