CurveSpotter 
App series / 6747273681
Bookology: Book Tracker
observed since · 66 snapshots · last
Empty Studio
- Track ID
- 6747273681
- Seller ID
- 1468461395
- First seen
- Published snapshots
- 66
- Current rating count
- 772
- Current rank
- #51 · Book top-free:au (US) · as of 2026-09-28T18:00:13.601Z
Screenshots
Rating-count series
App Store rating count, US
Window rate · primary +7.0ratings/day 2026-09-22T18:00:12.367Z → 2026-09-28T18:00:13.601Z · 6.0d window.
recent: +7.0/day over the last 1.0d · secondary interval · 2026-09-27T18:00:15.268Z → 2026-09-28T18:00:13.601Z
Rating counts can decrease when reviews are removed; decreases are shown as measured.
Cite this series
CurveSpotter, "Bookology: Book Tracker," App Store rating-count series, curvespotter.com/apps/6747273681, data as of 2026-09-28T18:00:13.601Z.
Cohort context
Percentile 89.1 by rating count among N=3,967 apps in the same app-age bucket (released 366+ days ago), as of 2026-09-28T18:00:13.601Z.
This metric compares the app’s latest absolute rating count against apps of similar app age. It is not a growth ranking.
Calls referencing this app
No call has named this app yet. Calls live in the permanent ledger index.