To me, these apps are a snapshot overlay for other apps that already exist but, you might no commonly use. For example, the pedometer gives you a quick insight into your step count but, if you wanted more detailed step tracking, you’d open Google Fit.
For the pedometer though, it’d be cool if it displayed a week on week or, day on day +/-.
I’d suggest submitting this as feedback via settings>system>feedback on your Nothing phone.