Comparison

OpenBioMaps Forms vs MusTerra

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

Head to head
About

OpenBioMaps Forms

Features
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Use OpenBioMaps to record monitoring data for living organisms and habitats. In addition to basic data (what, when, where and in what quantities), the OpenBioMaps app allows you to compile and use any data collection forms. To use the application, you must sign up on a selected OpenBioMaps server, which usually requires an invitation! You can upload the monitoring data collected offline to the selected OBM database server. Once connected to a server, the app downloads the background data needed to work offline. Key features: - Use of custom monitoring forms for different monitoring programs. - Offline use: recording observation data without an internet connection. - Collection of spatial data: recording of the location of living organisms and habitats using maps or recording of location data. - Record location in the background to create a tracklog to measure search effort or record the shape of habitats. - Upload monitoring data and tracklogs to the destination server if an Internet connection is available. - Map display of tracklogs and recorded data. - Support for the use of custom language versions. - Fast data entry thanks to many auxiliary functions, such as autocompletion of lists; recent searches; pre-filled items; and customizable form field history,

About

MusTerra

Features
Read full description

Our app allows you to measure tree diameter and height, capture their location, and visualize them on a map for tracking and analysis. Designed for foresters, researchers, and nature enthusiasts, it makes tree measurement and data management effortless. Features & Functionality: Measure Tree Diameter & Height – Use your phone’s camera for accurate measurements. Find & Store Location – Automatically record GPS coordinates of each tree. Visualize on Map – View and manage measured trees on an interactive map. Store & Organize Data – Save measurements with notes for future reference. Export Data – Easily share or export tree data for reports or research. Track and analyze trees with ease! Download now!

Screenshots

OpenBioMaps Forms4 screens
MusTerra4 screens

Verdict

The call

OpenBioMaps Forms and MusTerra are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on September 12, 2026 and May 17, 2026 respectively.

ScorecardNo meaningful differences
OpenBioMaps Forms versus MusTerra: the parameters behind the verdict, then further details
ParameterOpenBioMaps FormsMusTerra
PriceFreeFree
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad β€” betteriPhone
Requires iOS17.016.0 β€” better
Further details β€” not scored
Size45 MB138 MB
Age rating4+4+
DeveloperECOLLABMUST GmbH

In-app purchases

None

OpenBioMaps Forms

No in-app purchases

None

MusTerra

No in-app purchases

Questions

Is OpenBioMaps Forms free?
OpenBioMaps Forms is free to download, with no in-app purchases.
Is MusTerra free?
MusTerra is free to download, with no in-app purchases.
Do OpenBioMaps Forms or MusTerra have ads?
Neither OpenBioMaps Forms nor MusTerra shows ads.
Which is updated more often, OpenBioMaps Forms or MusTerra?
OpenBioMaps Forms ships an update weekly, and MusTerra weekly. Most recently, OpenBioMaps Forms was updated on September 12, 2026 and MusTerra on May 17, 2026.

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