On the App Store there is a widget that can be downloaded called AgeClock that show's how long one has aged, based on their birth date. Attached is a photo of the two app widgets I have on my desktop, displaying my birth age in granularity.
A neat add to the Don't Die app would be to take this a step further and show age accumulation via Biological age -- a Biological Age clock. I put in a single prompt to GPT-4 and got Flutter code that does exactly that on my mac desktop. Some tweaking needs to happen to account for precision (e.g., The exact time of day you were born, account for varying month lengths). And some tweaking could be done to fit it into the app as well, if desired.
The second screenshot shows the Flutter "app" adjacent to the Age Clock "app". If a dev would like prompt I used and/or code, please reach out.