You Are a Geologist
Explore beneath the sequoias
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Descend beneath California’s giant sequoias, collect field evidence, and discover how rock, water, roots, and microbes shape the living Sierra Nevada.
You Are a Geologist turns California’s Sierra Nevada into an interactive earth-science field expedition.
Create a field researcher and explore giant-sequoia groves while learning how granite, water, soil, roots, fungi, bacteria, glaciers, and climate shape the critical zone.
FIELD WORK THAT REWARDS CURIOSITY
• Explore eight distinctive sequoia-grove field sites
• Investigate rocks, soils, streams, roots, and mineral clues
• Descend underground into grove-specific critical-zone profiles
• Choose a mycorrhizal fungus or soil bacterium role
• Record surface and underground discoveries in your field log
• Complete story choices, quizzes, awards, and a field mini-game
• Invite one other geologist to a private two-minute grove challenge
• Compare specimen and quiz scores, earn wins, and climb the Community ladder
• Use the field guide and geology-concepts library to go deeper
BUILT FOR LEARNING
The app presents geology and forest ecology through short observations, missions, and interactive scenes. On iPhone and iPad, a private anonymous account saves progress and enables multiplayer without asking for your name or email address. Account deletion is available immediately in Settings.
COMMUNITY FIELD CHALLENGES
Create a six-character invitation code for one other geologist. Once accepted, both players enter the same grove for a synchronized two-minute specimen race followed by five geology questions. Specimens and correct answers build the match score; wins earn ladder points on the Community leaderboard. The leaderboard uses only automatically generated field aliases—there is no public chat and no personal contact information.
Four groves are available free. Optional Monthly, Annual, or Lifetime Premium access unlocks all eight groves and future premium grove scenes. Payment is handled by Apple. Restore Purchases is available in Settings.
Explore carefully, follow the evidence, and discover the living geology beneath the sequoias.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
The developer, Stephen Oni, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- User Content
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Stephen Oni
- Size
- 990.2 KB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Frequent
Contests
- In-App Purchases
Yes
- Lifetime Premium $199.99
- Annual Premium $49.99
- Monthly Premium $9.99
- Copyright
- © 2026 Stephen and Brooklyn Oni