App series / 6747273681

Bookology: Book Tracker

observed since · 19 snapshots · last

Empty Studio

Track ID
6747273681
Seller ID
1468461395
First seen
Published snapshots
19
Current rating count
492
Current rank
#41 · Book top-free (US) · as of 2026-08-15T11:43:20.561Z

Screenshots

Bookology: Book Tracker — App Store screenshot 1Bookology: Book Tracker — App Store screenshot 2Bookology: Book Tracker — App Store screenshot 3Bookology: Book Tracker — App Store screenshot 4Bookology: Book Tracker — App Store screenshot 5
Screenshots captured from the App Store listing and stored here unchanged.

Rating-count series

App Store rating count, US

Rating-count time seriesRating count from 2026-08-10T10:33:28.095Z to 2026-08-15T11:43:20.561Z, ranging from 472 to 497.4974854722026-08-102026-08-112026-08-122026-08-132026-08-142026-08-15curvespotter.com/apps/6747273681 · 19 snapshots 2026-08-10 → 2026-08-15
Window rate · primary +4.0ratings/day 2026-08-10T10:33:28.095Z → 2026-08-15T11:43:20.561Z · 5.0d window. recent: +7.2/day over the last 1.1d · secondary interval · 2026-08-14T09:08:17.111Z → 2026-08-15T11:43:20.561Z 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 2026-08-15T11:43:20.561Z.

Cohort context

Percentile 89.6 by rating count among N=1,859 apps in the same app-age bucket (released 366+ days ago), as of 2026-08-15T11:43:20.561Z.

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.