Insulin and glucose

This app tracks the correlation between your insulin intake and blood sugar, writes the data to the Health database on your iPhone, and graphs the correlation. It maintains a log, permits you to add data points and graphs the results. The blood sugar readings are written to the iPhone blood sugar results and visible in the Health app. The insulin is written to the Forced Vital Capacity results and visible in the Health app. Both are deleted when you delete the app.

Notes:
1. The iPhone does not have an insulin category in its Health database. We use Forced Vital Capacity instead. The records are identifiable (and filterable) because the source is Insulin.
2. The app will not graph your correlation unless there are at least two data points with different insulin units (e.g. 21 insulin units and 20 insulin units). The window for the graph is 1 week. Multiple data points with the same insulin units are fine, even for a single day. The graph provides an average reading for these data points.
3. The app assumes at least iOS 9.0, and runs on the iPhone 4s and later iPhones.
4. The log is presented in tabular form and is scrollable.