About this app
Prepare for success on the Principles & Practice of Engineering (PE) Exam with our comprehensive exam preparation app. Whether you're on the path to becoming a licensed Professional Engineer or need to review your engineering knowledge, our app is your go-to resource.
Latest release
What’s New
It has a default GDPR message now.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 8, 2026 · 11:19 AM Free
Screenshots
