Methodology

What we observe, what we calculate, and what the public Play Store cannot tell us. The short version: store facts stay facts, estimates are labeled, and missing history is never invented.

Observed captures

Google Play has no public historical feed. Every point must come from a captured Play page.

Recent points come from DJAI crawls. Older source-ledgered Play-page captures appear only where their collection basis is comparable. A six-month market window does not promise one observation per calendar day.

Install numbers

Public listings expose coarse floors such as 1M+, not exact competitor downloads.

We show that bucket exactly. Any installs-per-day field is a clearly marked model based on movement in the exact public rating count.

Traction-v1

The opportunity map compares growth, positive rank movement, and breakout evidence.

100 × clamp((.45g + .25max(r,0) + .15b) / .85). Age and freshness are excluded from the score; age only sets the x-position and cohort.

Markets and geography

The current public release is a single-market view.

Exact downloads by geography are not available for competitor apps. A future enterprise publisher connection may show authorized first-party reports for apps the customer owns.

Reading an intermittent chart

The x-axis follows real capture dates, including longer gaps.

Observed dates

Use the overview handles to focus a shorter interval, then reset to return to the full window.

Missing input

Shown as unavailable, never silently converted to zero. Exact data and CSV expose every plotted value.

Indexed genres

Each genre begins at 100, and only crawl rollups with the same population basis share a line.

Need the machine-readable contract?

The Developer Hub includes endpoints, authentication, examples, and OpenAPI.

Open Developer Hub