Hello, Thanks to all for many useful information; I check this forum monthly as guest but this is the first time I search for a specific app and need some help. Can you please suggest me an app where I can write (store) my costumers data (information)? Like this would be some kind of notes, 2nd phone book or preferably database. I only need to store very simple information: name, last name, address, phone number, e-mail and short memo for example: how costumer looks like, what she/he prefers to buy, what kind of appliance was brought to service.... It must have a chance for full search (search for the name, telephone number or just part of the word/text). If this app will also have a chance to import/export this data, it would be awesome. If it has chance to automatically convert phone number into hyperlinked (ready to tap and call), this would be also very ok. But... This application should not interfere with my phone contacts. Because this database will be over the year quite large and I am not in contact with those costumers weekly or with some even not monthly. Many thanks for suggestions and best regards.