Google Calendar - Spend less time managing your day & more time enjoying it
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
CalenGoo - Features | 1.0.175 for Android™
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
Jorte - Schedule books must be practical and has a good design.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request