Hello, I have a need for an app that rings an alarm at a specified time in advance of the current time. I need to take my blood sugar levels at one hour and at two hours after eating. I could eat at any time. (No set times for eating!) So, I envisage a button on my HTC which I press at any time (just one click) and it notes the current time and then reminds me in an hour and then in another hour. No frills. Easy to use. Get it?