TerraIndex vs ScubaLink
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
TerraIndex
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TerraIndex App, the app for conducting soil surveys! Below is an overview of the different surveys you can perform in TerraIndex: - Environmental soil testing - Geotechnical soil analysis - (Ground) water sampling - Water soil investigation The current version contains all functionalities for registering soil data. Functional Benefits TerraIndex has the following advantages: - Time saving - Simple way of registering soil data - No paper usage or risk of losing data - Fast communication with the consulting firm - Synchronization with the office - TerraIndex is multilingual. Field observations are done in your own language. - You no longer need to retype data. Field data is digitally stored directly in the field. - The App can be used both online and offline. - I.T. Works takes care of maintenance, updates and back up of data. Use your TerraIndex username and password to log in. Don't have a username and password yet? Please contact your TerraIndex or I.T. Works application administrator.
ScubaLink
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The ScubaLink app allows battery-saving Bluetooth Low Energy connection with any of Royal Eijkelkamp Water Probes family of Scuba multiprobes. Used in conjunction with the ScubaLink Bluetooth Module, the app allows use of an iPhone/iPad/iPod as a field display to view, collect and email data directly from the field. Features include: β’ Bluetooth Low Energy connection to any Scuba multiprobe β’ View data for up to 18 sensor parameters, such as temperature, depth, pH, conductivity, dissolved oxygen, and turbidity β’ Easy to read high-contrast data display with large fonts for use in bright sunlight β’ Time series data capture using the optional βauto-snapshotβ feature β’ Export logged snapshot data via email β’ Simple, intuitive interface β’ Log File management β’ Sensor Calibration β’ Manage displayed parameters and the order in which they appear β’ Review Calibration logs β’ Automatically capture GPS coordinates on all snapshot data β’ Manage interval for data capture β’ View screen in any orientation β’ Easy auto-connect β’ Calibrate easily in the field β’ Built-in Simulator
Screenshots
Verdict
The clearest difference is update cadence: TerraIndex at every 8 days against ScubaLink's every 21 months. TerraIndex also leads on iOS requirement (13.0 vs 15.6). ScubaLink's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
TerraIndex ships an update every 8 days, ScubaLink every 21 months. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.
| Parameter | TerraIndex | ScubaLink |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days β better | Every 21 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPad | iPhone, iPad, iPod β better |
| Requires iOS | 13.0 β better | 15.6 |
| Further details β not scored | ||
| Size | 58 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | TerraIndex B.V. | Royal Eijkelkamp |
In-app purchases
TerraIndex
No in-app purchases
ScubaLink
No in-app purchases








