https://www.beeminder.com/overview
https://apps.apple.com/us/app/beeminder/id551869729

Not all things Strides would be a good fit to use with Beeminder, but what would be could be very effective.

Their description:

What is Beeminder?

It's reminders with a sting! Or, goal-tracking with teeth.

Mind anything you can graph — weight, pushups, to-do tasks completed — by replying with data when Beeminder prompts you. Or connect with one of the dozens of services (like Fitbit or RescueTime) that we integrate with to report automatically.

We plot your progress with a Bright Red Line to your goal. Keep all your datapoints on the good side of your red line or (literally) pay the price.