DJAI Game Analytics
Updated Aug 13
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Rubato Piano DrillsMajor 9Th Media · Music · released Dec 5, 2025 · Everyone
Rubato Piano Drills is a progressive piano training program.
Installs
Exactly what Play publishes: a bucket floor, not a count. `realInstalls` is not available from the store at all.10+
Installs / day
Modeled, not measured. Google Play only publishes install bucketslike “1,000,000+”, and no install history at all. We measure the exact rating count — which is public and ticks continuously — and convert it using an installs-per-rating factor calibrated from this game's own bucket floor. Treat it as an order-of-magnitude signal, never a count.—
Store rating
Exact. Play publishes the review score and the rating count as real numbers, which is precisely why the install model is calibrated against ratings.—/ 5
Momentum
A transparent weighted sum of four components. The breakdown below shows exactly how many points each contributed.0.0/ 100
Best rank
Each component's contribution to the headline score. Add the four and you get the number above.
Log-scaled install velocity. Modeled from exact rating counts — Play only publishes install buckets.
Places gained toward #1 across the window. Saturates at 50 places. Measured from our own chart captures.
Decays linearly over the first 90 days after release. Measured from the store's release date.
Crossing an install bucket (0.6) plus holding a top-20 slot (0.4). Measured.
Rating and review counts as captured by us. These are exact integers published by Play — no model involved.
3 captures over 3.0 days. The install estimate elsewhere on this page is derived from the slope of this line.
Best slot held on each capture day, across every chart this game appears in. Rank 1 sits at the top.
Play publishes no rank history. Every point here is a chart position we recorded ourselves.
Play publishes a floor, never a count — so this is a ladder of the rungs, not a line.
Currently in the 10+ bucket. Play publishes only this floor, never an exact count, and never a history — so a rung change is the only install movement we can observe directly.
The published review score. Plotted on its own axis rather than twinned with the audience curve — two measures, two charts.
Collecting history
No captures yet for this rating trend.
Last capture Aug 13, 2:23 PM
Every slot held at our most recent capture. Play exposes only three collections — top free, top paid and grossing — so this is the complete picture, not a sample.
| Chart | Category | Market | Rank |
|---|---|---|---|
| Top grossing | Music | us | #44 |
91 tracked music games.
#44
Where the numbers on this page came from, and when.