What is pace out of 10?

Question

Okay people, I thought I could solve this problem myself but for some reason I just can't get a straight answer! 

I recently downloaded a fitness app called '100% Army Fit'. On it there is a section for cardio training and with it guidance. This is what I'm seeing:

Exercise duration: 15:00
Pace out of 10: 3

Does anyone know what this means?
Thank you

Answer

The app has a home page:  play.google.com/store/apps/details?id=com.himumsaiddad.armyfit&hl=en

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What is pace out of 10?

Answers (1)