Rintik Sedu (birth name: Nadhifa Allya Tsana) is an Indonesian author and internet persionality.. She is also mostly known by her podcast on Spotify.. She told detik.com, that ‘rintik’ means “lighter than the rain”.
She used a pseudonym to conceal her identity in front of her classmates. 
In 2018, the production company Multivision Plus announced that it will make a movie based on her novel. Geez & Ann tells the story of the love story of Keanna, a second year middle school girl who is called Ann by Geez, her senior, who is four years older. She is approached at an alumni event, after that memorable first meeting, Geez continues his education in Germany. After three years, Geez always surprisingly meets Ann until she falls in love with him.
- Geez & Ann #1, 2017
- Geez & Ann #2, 2017
- Buku Rahasia Geez, 2018
- Kata, 2018
- Buku Minta Dibanting, 2020
- Masih Ingatkah Kau Jalan Pulang, 2020
- Geez & Ann #3, 2020
- ^ “Toko Buku Online Terbesar | Gramedia.com”. www.gramedia.com. Retrieved 2019–08–29.
- ^ “Rintik Sedu”. www.goodreads.com. Retrieved 2019–08–29.
- ^ “Rintik Sedu”. Spotify (in Indonesian). Retrieved 2019–08–29.
- ^ Awalnya Sembunyikan Identitas, Apa Sih Arti Nama Rintik Sedu?
- ^ rachli. “Mengenal Profil Podcast Eksklusif Spotify (II)”. mancode.id. Retrieved 2020–09–28.
- ^ “Apple Podcasts : Indonesia : All Podcasts Podcast Charts — Top Podcasts (Updated”. chartable.com. Retrieved 2020–09–28.
- ^ Sedu, Rintik (2017). Geez & Ann #1. ISBN 9789797809096.
- ^ Sedu, Rintik (2017). Geez & A2. ISBN 9789797809102.
- ^ Sedu, Rintik (2018). Buku Rahasia Geez. ISBN 9789797809294.
- ^ Sedu, Rintik (2018). Kata. ISBN 9789797809324.