Almost 100,000 people can access their summary health records, order repeat prescriptions and book, view and cancel certain appointments through the new app.
Mae modd i bron i 100,000 o bobl gael gafael ar grynodeb o'u cofnodion iechyd, archebu presgripsiynau amlroddadwy a threfnu, gweld a chanslo rhai apwyntiadau penodol drwy'r ap newydd.