SoftAims React Native Developer interview questions

The interview process was terribly long and frustrating, i had 4 interviews and almost all 4 were of same type, I got asked technical questions which were easy-medium in difficulty. The final one was also strange, i was asked to design schema and some logic of one of their real apps but i declined saying they can ask me to do for some parts of it not whole as it is not possible in such short time. The interviewer asked me to search about a tool, which i was suppose to tell in another fifth interview, thankfully it never happened. I didn't understand what they were trying to do.