LithoMap

Simple choices for different kinds of trips

Explore free. Pay when you need the field tools.

The live map does not require an account. Offline plans add downloaded areas, private saved places, and higher-capacity tools for regular field use.

Download LithoMapPut U.S. geology in your pocket.Choose Google Play or the App Store.

Get it onGoogle PlayDownload on theApp Store

New to Offline Basic?

Take every Basic field tool for a 7-day test trip.

Eligible new subscribers can choose monthly or annual Offline Basic and pay nothing for the first seven days. Afterward, the selected plan renews automatically at $5.99/month or $49.99/year unless canceled before the trial ends.

United States only. Apple asks customers to cancel at least 24 hours before the trial ends. Apple or Google determines eligibility and shows the final renewal terms before confirmation.
Field kit with a phone, paper map, notebook, and unpolished rock specimens
Explore free. Add the field tools when you need them.

Pay for the field tools—not the curiosity

Start exploring before you ever choose a plan.

Geology, fossil records, collectible rocks and minerals, public-land context, search, and map details are free. Upgrade only when you want offline areas, a private field notebook, photos, organization, or sharing.

Explore Free

$0No account required

Explore the live map and research the geology and discoveries around you.

  • Nationwide geology across the United States
  • Fossil occurrence discovery, including petrified wood records
  • Collectible rocks, minerals, gems, and precious metals
  • Public-land context
  • GPS, place search, filters, and formation details
  • No account required for live exploration
7 days free for eligible new subscribers

Offline Basic

$5.99per month · $49.99/year

Try the complete Basic field kit free for 7 days, then keep it for occasional trips and focused offline areas.

  • 7-day free trial for eligible new subscribers
  • Everything in Explore Free
  • 3 active offline areas
  • 6 completed downloads each month
  • 3 GB monthly transfer
  • Up to 10 private places saved on this device
  • Titles, notes, and up to 6 private photos per place
  • Receive places directly from a Plus member
  • Resumable downloads and fair queue estimates
Best for frequent trips

Offline Plus

$9.99per month · $84.99/year

More offline coverage, organization, and private sharing for frequent field explorers.

  • Everything in Offline Basic
  • 10 active offline areas
  • 20 completed downloads each month
  • 10 GB monthly transfer
  • Unlimited places saved on this device
  • Private sharing by exact LithoMap username or secure link
  • Folders, searchable tags, and GeoJSON export

Only completed downloads count

Interrupted or failed downloads do not use a completed-download credit. Downloads can resume when a connection returns.

Your device sets the final limit

Saved places and private photo copies are kept on the device. “Unlimited” saved places remain subject to available device storage.

Add capacity when a trip needs it

Active members can add 3 completed-download credits and 3 GB of transfer for a one-time $3.99. Credits remain available while membership is active.

Prices shown are U.S. list prices. The 7-day introductory trial is available only to eligible new Offline Basic subscribers. After the trial, the selected monthly or annual plan renews automatically until canceled. Your app store shows eligibility, price, and billing terms before you confirm.

Built for the trip you actually take

From a quick afternoon search to a signal-free weekend.

Start with the nationwide live map. Add saved places and photos when you want a field notebook, then choose the offline capacity that fits the way you explore.

Layered Grand Canyon geology in natural early-morning light
Bring the geologic story with you—even when the signal stops.

Still deciding?

See what each feature does in the field.

Explore all featuresRead common questions