Your android built in calander is not bad for simple memory write, todo task, travel not, keyword from newspapee and portal for search google for article read and make, All that you need tool for calaender import/export here are some

https://play.google.com/store/apps/details?id=tk.drlue.icalimportexport&hl=en&referrer=utm_source%3Dgoogle%26utm_medium%3Dorganic%26utm_term%3Dandroid+calendar+import


https://play.google.com/store/apps/details?id=jitdesign.icsimport&hl=en&referrer=utm_source%3Dgoogle%26utm_medium%3Dorganic%26utm_term%3Dandroid+calendar+import

https://play.google.com/store/apps/details?id=com.shadowfury.facebookcalendarsync&hl=en&referrer=utm_source%3Dgoogle%26utm_medium%3Dorganic%26utm_term%3Dandroid+calendar+import

https://play.google.com/store/apps/details?id=com.anydo.cal&hl=en&referrer=utm_source%3Dgoogle%26utm_medium%3Dorganic%26utm_term%3Dandroid+calendar+import

https://play.google.com/store/apps/details?id=eu.gajdos.contacts&hl=en&referrer=utm_source%3Dgoogle%26utm_medium%3Dorganic%26utm_term%3Dandroid+todo+import+export