Comparison

Rockd vs Chocorua Map

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Rockd

Discover and document the geology around you. Access global geologic maps, 3D globes, and detailed summaries of your surroundings. Contribute your own observations and track your exploration of Earth's geologic history.

Highlights
  • Interactive global geologic maps
  • 3D virtual globe exploration
  • Field observation logging
  • Offline map caching
  • Paleogeographic map access
  • Stratigraphic column viewing
  • Geologic literature integration
Features
Read full description

Explore, learn about, and document your geologic surroundings! Whether you are a professional geoscientist or curious about the rocks around you and the stories they tell, Rockd allows you to explore and learn about the geologic record, contribute your own observations, and log your journey through the geologic record. Features: - Instant access to geologic and geographic summaries of your current location via a Dashboard - Interactive global access to more than 290 geologic maps, with more being added weekly - Explore the landscape with a dynamic, 3D virtual globe - Save maps for use in the field with a built-in map caching system - See your past location and explore paleogeographic maps from C.R. Scotese and GPlates - View Macrostrat stratigraphic columns where available (beta) - Explore published literature containing mentions of mapped geologic units (when available) via xDD (formerly, GeoDeepDive) - Elevation data for most points on Earth from digital elevation models (DEMs) - Add your own field observations even offline; tag features from Macrostrat and the Paleobiology Database - Record strike/dip or trend/plunge for geologic features, using your phone's compass - Track your progress through the geologic record privately, or share it with others - See the public activity of other users and share your own and other public checkins using unique URLs Rockd is produced by the Macrostrat lab in the Department of Geoscience at the University of Wisconsin - Madison. Support provided by the National Science Foundation (NSF) and the Dept. of Geoscience. Experiencing issues? Send an email to contact@rockd.org and we will do our best to help you resolve it.

About

Chocorua Map

Explore trails and points of interest around Mt. Chocorua and its lake with this offline map guide. Track your position, measure distances, and learn about the area's history and geology. Create and privately store your own points of interest with photos.

Highlights
  • Offline trail and POI map
  • GPS location tracking
  • Distance and compass measurement
  • Historical and geological information
  • User-created POIs with photos
  • Self-contained, no internet needed
Features
Read full description

The Chocorua Map app is a mobile guide to trails and points of interest (POIs) in and around Mt. Chocorua and its eponymous Lake, especially the area preserved, directly or indirectly, by the Chocorua Lake Conservancy (CLC). If you allow the app to use your location (e.g., GPS), you can find and track your position on the map. The app contains abundant information on trails, including how long it should take at a given pace, as well as historical and geological points of interest.. Measure distances and compass bearings by tapping and dragging on the map. Publicly accessible lands of different types are shown with transparent color overlay. The background map was rendered from LiDAR topography and has a resolution of 1 meter. The app's built-in POIs describe sites of historical interest, unique landscape features and how they developed, and features of geological and ecological significance. The user may enter their own POIs and attach photos to them; all user-entered information remains private to user's device. The user can share their POIs with other people or apps via the standard iOS Sharing Panel. The app is completely self-contained: No internet connection is necessary. Furthermore, user data is NEVER uploaded automatically to the Internet and can never be seen by the app programmer, CLC, or any other third party. This app is for educational purposes only and should not be used as a sole source of navigation. The CLC and the author are not responsible for the accuracy of any of the information presented by this app.

Screenshots

Rockd4 screens
Chocorua Map4 screens

Verdict

The call

The clearest difference is rating: Rockd at 4.4 against Chocorua Map's 3.7. Rockd also leads on ratings volume (185 vs 3). Chocorua Map's advantage is iOS requirement (14.0 vs 16.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Rockd holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Rockd has 185 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

Rockd ships an update every 3 months, Chocorua Map every 2 months. The most recent releases landed on September 18, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
Rockd versus Chocorua Map: the parameters behind the verdict, then further details
ParameterRockdChocorua Map
PriceFreeFree
Rating4.4 (185 ratings) — better3.7 (3 ratings)
Positive reviews73.3% of reviews—
Number of ratings185 — better3
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.614.0 — better
Further details — not scored
Size259 MB272 MB
Age rating4+4+
DeveloperUniversity of Wisconsin-Madison Shared AppsRichard Allmendinger

Customer experience

Rockd

All ratings185 ratings
Positive82.2%
Neutral7.6%
Negative10.3%
Written reviews90 reviews
Positive73.3%
Neutral13.3%
Negative13.3%

Chocorua Map

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Rockd

Reported bugs

17 issues
  • Black map display in airplane mode and online
  • Persistent error dialogs that cannot be dismissed
  • GPS not tracking in real-time
  • Offline check-ins not syncing properly
  • Sign-up page jumps between fields and login page
Show 12 more
  • Fossils button not working
  • Map returns to user location after viewing check-ins
  • App crashes and becomes unresponsive
  • Data loss after app reinstall or logout
  • Maps fail to load after recent updates
  • Location search functionality broken
  • Android version windows not visible
  • Straight lines appear when zooming
  • Formations stop at state lines
  • Check-in screen stuck with no exit option
  • App won't load after initial use
  • Geological overlay won't upload to base map

Requested features

16 requests
  • Follow/friend mechanic to track other users' check-ins
  • Rock identification tool from photo uploads
  • Offline map download with customizable zoom levels
  • Stereonet tool for structural geology
  • Groundwater/aquifer information section
Show 11 more
  • Map legend/key for geological features
  • Spanish language support
  • Ability to move dashboard to different locations
  • Latitude/longitude search functionality
  • Multiple photo attachments per location
  • Strike and dip data visualization
  • Fault line labeling on maps
  • Better Android version compatibility
  • Tutorial or short course for advanced features
  • Black contact lines between formations toggle
  • Personal photo upload focus with mineral variations

Chocorua Map

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Rockd

No in-app purchases

None

Chocorua Map

No in-app purchases

Questions

Is Rockd free?
Rockd is free to download, with no in-app purchases.
Is Chocorua Map free?
Chocorua Map is free to download, with no in-app purchases.
Which has better reviews, Rockd or Chocorua Map?
Rockd is rated higher. Rockd averages 4.4 out of 5 from 185 ratings, while Chocorua Map averages 3.7 from 3 ratings.
Do Rockd or Chocorua Map have ads?
Neither Rockd nor Chocorua Map shows ads.
Which is updated more often, Rockd or Chocorua Map?
Rockd ships an update every 3 months, and Chocorua Map every 2 months. Most recently, Rockd was updated on September 18, 2026 and Chocorua Map on September 14, 2026.

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