# Deep Dive Drill

> Deep Dive Drill (iPhone/iPad app by Alex Ortega.)

- Source: https://appshunter.io/ios/app/deep-dive-drill/id6760712573 (this page in markdown: same URL + `.md`)
- Developer: [Alex Ortega](https://appshunter.io/developer/1885863231)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16.0 · 7 MB
- Languages: American English
- Released: 2026-03-25
- Data updated: 2026-06-05
- User reviews in markdown: https://appshunter.io/ios/app/deep-dive-drill/id6760712573/reviews.md

## What is Deep Dive Drill?

Identify Minerals in the Field
Walk through a structured identification workflow based on the Mohs hardness scale and standard mineralogical criteria. No equipment beyond what you carry. No guesswork. No internet connection.

Build Your Personal Collection
Save identified specimens with photos, location notes, collection date, and custom descriptions. Filter and sort your collection by mineral class, match quality, or date. Every specimen stays on your device — no account needed.

Browse the Reference Database
Explore a comprehensive mineral database with detailed entries covering chemical formula, crystal system, specific gravity, associated minerals, and occurrence contexts. Filter by luster, color, hardness, class, and more.

Track Your Session History
Review every identification session with a full recap of your answers and top candidates. See your monthly activity, overall confidence rate, and your most frequently encountered minerals.


## Version history (last 2 releases)

### 1.29 — 2026-03-29

Identification Workflow — refined step-by-step flow based on the Mohs scale and standard mineralogical criteria. Works fully offline, no equipment required.
Collection — save specimens with photos, GPS notes, and custom descriptions. New filters by mineral class, match quality, and date.
Reference Database — expanded entries with chemical formulas, crystal systems, specific gravity, and occurrence contexts. Filter by luster, color, hardness, and more.
Session History — full recap of every identification session. Track your monthly activity, confidence rate, and most-encountered minerals.

### 1.0 — 2026-03-25

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*