Its easy to magage your Hatena blog from your iOS device with iHatenaSync.
(This app is only for Hatena Diary. Not available in the Hatena Blog.)
**iHatenaSync has the following functions.
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-The post function of a diary.
-The delete function of a diary.
-Function to Save Inputted Diary in device.
-The post function of a HatenaFotolife.
-The delete function of a HatenaFotolife.
-Hatena notation input support.