# Rock & Crystal Identifier App

> Taken from the public Google Play listing. Every figure below carries the date it was updated.
> Nothing is modelled or estimated. A new collection starts at 00:00 UTC daily and takes several hours; an individual app's reading lands at some point inside that window.

Source page: https://appcurves.com/app/rock-and-crystal-identifier-app

- Package: `rock.crystal.stone.gem.mineral.identifier.geology.rocks.slsolutions.rockid`
- Developer: SL-Solutions
- Category: Education
- Platform: Android (Google Play)
- Released: Dec 30, 2023
- Lifetime downloads: 319,872 (updated 2026-09-20)
- What the store shows instead: 100,000+
- Rating: 4.63 from 6,467 ratings
- Downloads added: 4,352 across 15 days (2026-09-05 → 2026-09-20; a reading is missing in between)
- Readings kept: 23 (2026-08-05 → 2026-09-20)

### Latest readings

| Date (UTC) | Lifetime downloads | Added |
|---|---:|---:|
| 2026-08-30 | 313,712 | — |
| 2026-08-31 | 313,712 | held |
| 2026-09-02 | 314,789 | +1,077 over 2 days |
| 2026-09-03 | 315,520 | +731 |
| 2026-09-04 | 315,520 | held |
| 2026-09-05 | 315,520 | held |
| 2026-09-20 | 319,872 | +4,352 over 15 days |

"held" means Google's own counter showed the same figure as the day before — it is a real reading, not a missed one. A multi-day "Added" spans two real readings; the days between were not read.

Showing the latest 7 of 23 readings. Signed-in followers see the full curve from the day they followed.

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Site last completed a reading on 2026-09-22. AppCurves is not real-time.
When citing, include the reading date. https://appcurves.com/faq answers where the figure comes from.