Convo announced today an update to its iOS app that adds new file sharing and annotation features to the business collaboration service. The update represents Convo’s efforts to combine mobile, social and the cloud to help teams work together faster and better. Convo rearchitected its app to handle PDF, Word and Powerpoint previews almost instantaneously. The company claims the app can now load a 6MB Powerpoint file in 2.8 seconds, compared to 80 seconds in the previous version. Once the file is open, you can highlight and annotate specific parts_of the document. If you want to share a file while...

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