Not enough grossing-chart signal for an honest number yet.
Chart position
#59
paid · Books
Ratings base
3
momentum charts unlock as daily captures accrue
*MRR is a modeled point estimate, never a measured figure: computed from observed chart ranks, ratings momentum, paid-chart position and verified anchors, recalibrated weekly. The full modeled range is in the estimator breakdown below, and our measured error is published on the methodology page.
Cumulative ratings
See how this number was made
+The full estimator breakdown: which signals produced the number, how much they disagree, and the full modeled range
+The copyability scorecard with every signal receipt
+Related niche apps in the same category, ranked by copyability
