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ChatPDF GPT AI - Homework solver
The app uses ChatPDF API, which comes with a free plan that allows you to have 500 messages sent, but if you want to upgrade you can start by $19/.month which allows you to have 3,000 messages sent. It also uses api-ninjas API, which allows you to scan paper documents. It comes with a free plan that give you 10,000 API calls, but if you want to upgrade you can start by $19/.month which allows you to have 200,000 API calls.