About this app
Explore the effigies and mausoleums of 50 sovereigns — Merovingians, Carolingians, Capetians, Valois and Bourbons — enriched with portraits and detailed biographies. Admire the gallery of interior photos and exceptional stained-glass windows. Test your knowledge with the quiz. Available in French and English.
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 26, 2026 · 11:08 AM $0.99
Screenshots
