how to write in append mode for text file
Remove the following line of code [savedString writeToFile:documentTXTPath atomically:YES]; And remaining code are all fine. Anyway check my code also, NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *documentTXTPath = [documentsDirectory stringByAppendingPathComponent:@”Notes.txt”]; NSString *savedString = textview.text; NSFileHandle *myHandle = [NSFileHandle fileHandleForWritingAtPath:documentTXTPath]; [myHandle seekToEndOfFile]; [myHandle writeData:[savedString dataUsingEncoding:NSUTF8StringEncoding]];