"Shraddha Prayoga is strictly parampara-based. The above is a guideline. You must consult a Sri Vaishnava Vadhyar (Srouthigalar) for your specific subsect (Thenkalai/Vadakalai) and Sutra."
Recommendation for a complete text: Obtain the book "Sri Vaishnava Shraddha Prayoga" published by Ubhaya Vedanta Pravartana Sabha (Kanchipuram) or the Sri Ramanuja Mission Trust (PDF copies sometimes available for scholars). Alternatively, request the Prayoga Patam (ritual booklet) from the Sri Rangam Srimad Andavan Ashrama.
It sounds like you are looking for the ritual procedure (prayoga) for performing Shraddha (ancestral rites) according to Sri Vaishnava traditions, specifically hoping to find a free resource or guide. sri vaishnava shraddha prayoga Free
Here is a direct, actionable answer to help you find a free, authentic Sri Vaishnava Shraddha Prayoga.
Q1: Can I perform the Sri Vaishnava Shraddha Prayoga without a priest? "Shraddha Prayoga is strictly parampara-based
Q2: Is there a free mobile app for this?
Q3: What is the difference between Thenkalai and Vadakalai Shraddha Prayoga? Recommendation for a complete text: Obtain the book
Q4: Is it okay to use a "Free" PDF instead of a printed book?
Q5: What if I make a mistake in the free prayoga?
Using the Pavitram (ring of Dharba) on the right hand, water mixed with black sesame is poured through the fingers. This is done 3, 7, or 16 times depending on the specific family tradition (Achara Vichara).