Issaabuu Lab · com.blackbooks.lite · Productivity
Google Play shows 100+ for BlackBooks. The counter behind it stood at 427 lifetime downloads on Nov 5, 2026. Recorded by AppCurves, once a day, from the public Play listing — not modelled, not estimated.
Charts in 1 of the 203 markets we scan each day, on Nov 5, 2026. Best positions first.
Android only — Apple publishes no download counts. Questions · llms.txt