Can I download registration information into a spreadsheet?

Yes, you can download the submissions as Excel or integrate your form with Google Spreadsheet. Please check the following guides that will help you doing so: 

https://www.jotform.com/help/73-How-to-Download-Form-Submissions-as-Excel-CSV-PDF

https://www.jotform.com/help/228-How-to-Integrate-Form-with-Google-Spreadsheet 

I hope this helps.