# LithoMap — Geology and field discovery

> Geology and field discovery (iPhone/iPad app by PTW Referrals LLC.)

- Source: https://appshunter.io/ios/app/lithomap/id6809553321 (this page in markdown: same URL + `.md`)
- Developer: [PTW Referrals LLC](https://appshunter.io/developer/6786098773)
- Category: Reference, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.4 · 70 MB
- Languages: American English
- Released: 2026-09-22
- Data updated: 2026-10-09

## What is LithoMap?

Discover the geologic story beneath your feet with LithoMap, a nationwide field reference for the United States and Washington, DC.

Use the interactive map to:

• Explore mapped geologic units with consistent LithoMap colors.
• Inspect formation names, ages, descriptions, and source information.
• View reported fossil occurrences from the Paleobiology Database.
• Explore reported collectible-rock and mineral occurrences from USGS MRDS.
• View informational public-land boundaries.
• Search for cities, landmarks, and addresses, with multiple choices for ambiguous place names.
• Center the map on your current location when foreground location access is allowed.
• Filter the map to focus on the fossils, rocks, minerals, gems, and precious metals that interest you.
• Save field locations with a title, notes, and on-device photos on eligible plans.
• Download selected areas for offline field use on eligible plans.
• Share saved locations securely on eligible plans.

LithoMap preserves source attribution and links so you can evaluate original records. Scientific and locality information may be incomplete, generalized, historical, or inaccurate. A mapped occurrence does not guarantee that material is present, collectible, visible, or legally accessible today. Geologic units and public-land boundaries are informational and are not legal surveys. Always verify current ownership, access rules, closures, permits, and collecting regulations with the responsible land manager before entering land or collecting anything.

LithoMap is not a navigation, emergency, safety, legal, or professional geologic service. Never rely on it as your only navigation or safety resource.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
LithoMap Terms: https://lithomap.app/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Offline Basic Monthly | $5.99 | per month |
| Offline Basic Annual | $49.99 | per year |
| Offline Plus Monthly | $9.99 | per month |
| Offline Plus Annual | $84.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 3 Extra Download Credits | $3.99 | one-time |


## Is LithoMap safe?

Not enough ratings yet to assess LithoMap.

## Is LithoMap legit?

LithoMap has limited verification signals. The AppsHunter Legitimacy Score for LithoMap is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-22

No release notes.

## More apps by PTW Referrals LLC

- [Precision Grade AI: Card Scan](https://appshunter.io/ios/app/precision-grade-ai-card-scan/id6786098471)

All apps by PTW Referrals LLC: https://appshunter.io/developer/6786098773

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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 2026-10-09.*