Comparison

EDDMapS Biocontrol vs Rockd

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

Head to head
About

EDDMapS Biocontrol

This app serves as a reference and reporting tool for invasive plants and their biological control agents. It connects to EDDMapS to assist agencies in tracking the release and occurrence of biological control agents for noxious weeds.

Highlights
  • Invasive plant reference
  • Biological control agent reporting
  • Noxious weed tracking
  • Agency data integration
  • Occurrence tracking
Features
Read full description

Reference and Reporting for Invasive Plants and their biological control agents. This free application uses EDDMapS (www.eddmaps.org) to help county, state and federal agencies track releases and occurrences of biological control agents of noxious weeds.

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
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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.

Screenshots

EDDMapS Biocontrol4 screens
Rockd4 screens

Verdict

The call

The clearest difference is ratings volume: Rockd at 187 against EDDMapS Biocontrol's 3. EDDMapS Biocontrol's advantage is rating (4.7 vs 4.4). 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

EDDMapS Biocontrol holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Rockd has 187 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

EDDMapS Biocontrol ships an update every 4 months, Rockd every 3 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

Scorecard2 real differences · 8 level
EDDMapS Biocontrol versus Rockd: the parameters behind the verdict, then further details
ParameterEDDMapS BiocontrolRockd
PriceFreeFree
Rating4.7 (3 ratings) — better4.4 (187 ratings)
Positive reviews—73.6% of reviews
Number of ratings3187 — better
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.616.6
Further details — not scored
Size26 MB259 MB
Age rating4+4+
DeveloperCharles T. BargeronUniversity of Wisconsin-Madison Shared Apps

Customer experience

EDDMapS Biocontrol

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Rockd

All ratings185 ratings
Positive82.2%
Neutral7.6%
Negative10.3%
Written reviews91 reviews
Positive73.6%
Neutral13.2%
Negative13.2%

Bugs and requests

EDDMapS Biocontrol

Not enough reviews yet to summarise bugs or 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

In-app purchases

None

EDDMapS Biocontrol

No in-app purchases

None

Rockd

No in-app purchases

Questions

Is EDDMapS Biocontrol free?
EDDMapS Biocontrol is free to download, with no in-app purchases.
Is Rockd free?
Rockd is free to download, with no in-app purchases.
Which has better reviews, EDDMapS Biocontrol or Rockd?
EDDMapS Biocontrol is rated higher. EDDMapS Biocontrol averages 4.7 out of 5 from 3 ratings, while Rockd averages 4.4 from 187 ratings.
Do EDDMapS Biocontrol or Rockd have ads?
Neither EDDMapS Biocontrol nor Rockd shows ads.
Which is updated more often, EDDMapS Biocontrol or Rockd?
EDDMapS Biocontrol ships an update every 4 months, and Rockd every 3 months. Most recently, EDDMapS Biocontrol was updated on October 23, 2026 and Rockd on October 21, 2026.

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