How to Read My Bio Age’s Trend Charts and Colour Zones
Use the 14-day, three-month and six-month views to review available trends, while distinguishing app score bands from clinical reference ranges.
By My Bio Age
A trend chart helps you see whether a number is isolated or part of a longer pattern. My Bio Age includes short and longer views for supported metrics, with colour zones in selected score charts to make their categories easier to scan.
Choose the window for your question
- 14 days: review recent movement and check individual changes.
- Three months: look for a pattern across a longer stretch of your routine.
- Six months: compare a broader history when enough records are available.
Changing the window changes the context, not the underlying measurement. A steep-looking line in a short view may look smaller in a longer view. Always read the dates and scale before comparing screenshots.
What the background colours mean
Colours show the app’s categories for the selected score. They are not universal diagnostic thresholds. Recovery, Training Load, Stress Resilience and Circadian Alignment use different definitions, so a green band in one chart does not have the same meaning as a green band in another.
Read the label and numerical value alongside the colour. A score entering a lower band does not establish why it changed, and a higher band does not prove that everything is healthy.
Check coverage before interpreting shape
A chart only contains records available to the app. Missing nights, a changed tracker or a different number of samples can affect what is displayed. Check the underlying Health category if a sudden change coincides with a device or permission change.
Weekly and daily views are different
The MyBioAge Index™ is calculated for complete weeks. Other measurements and daily scores have their own windows and update behaviour. Do not assume that a daily point and a weekly Index point refer to the same period.
A useful review sequence
- Start with the longer view to locate the period you are interested in.
- Switch to a shorter view to inspect recent movement.
- Check dates, units and missing records.
- Compare related measurements without assuming one caused the other.
If you share a screenshot, include enough context to show the metric, date range and scale, and review the personal information it contains. The chart can support a conversation, but it is not a diagnosis or proof that an intervention changed your biological aging.
See the patterns in your own Apple Health history with clear, dated trend charts. Get My Bio Age free on the App Store. The iPhone app is completely free, with no in-app purchases, subscription or account required. Your health data is processed privately on your iPhone.