WHY FREE & WHY OPEN-SOURCE? What any ASO tool gives you are just algorithmically estimations. I have tried many and I can say they are not consistent at all. And they likely over-complicate things in their solutions where over-complication does not necessarily create a better solution.
WHY SELF-HOSTED? I wanted to provide this as free. If I hosted the whole thing at a site, I suspect that abuse would be one of the things I would need to deal with, and it would also come with lots of infrastructure costs. And users would share their data suspecting how the hack this is possible for free of charge. Hosting locally is extremely easy, can be done in less than 2 minutes.
HOW IT WORKS IN A NUTSHELL? It uses the public iTunes Search API to estimate keyword popularity (6-signal model), difficulty (7 weighted factors), and downloads per ranking position. You can scan 30 App Store countries, track your app's rank, and export to CSV. It has all the core functions one can ask for.
Installation: git clone https://github.com/respectlytics/respectaso.git cd respectaso docker compose up -d
License: AGPL-3.0. Built with Django + SQLite + Tailwind.