Comparison

ScubaLink vs HyQual Interface App

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

Head to head
About

ScubaLink

Features
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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: • Bluetooth Low Energy connection to any Scuba multiprobe • View data for up to 18 sensor parameters, such as temperature, depth, pH, conductivity, dissolved oxygen, and turbidity • Easy to read high-contrast data display with large fonts for use in bright sunlight • Time series data capture using the optional “auto-snapshot” feature • Export logged snapshot data via email • Simple, intuitive interface • Log File management • Sensor Calibration • Manage displayed parameters and the order in which they appear • Review Calibration logs • Automatically capture GPS coordinates on all snapshot data • Manage interval for data capture • View screen in any orientation • Easy auto-connect • Calibrate easily in the field • Built-in Simulator

About

HyQual Interface App

Features
Read full description

The HyQual app connects your iPhone or iPad to a HyQual probe via Bluetooth by using the Bluetooth battery pack. Get similar functionalities available in the HyQual control software, only with touchscreen utility and email function additionally. Functions available: • Snapshot: a Snapshot is one line of data (date, time, parameter readings) that is logged into your display device’s Snapshot file • AutoSnap: record automatically data for short periods • Clean: HyQual 300T have a cleaning brush (wiper). Use Clean function when you wish to run a cleaning cycle. • Connect or disconnect to a HyQual probe. • Logging On/Off: Activate and deactivate logging functions and choose the logging interval. • Rolling data: scroll data in the Home Screen • Files: Create, See, Edit, Export, Delete files: Snapshot Files or Log Files. • Snapshot file: select and record data (Snapshots) in your device either manually (one-by-one) or automatically. • Log file: program the HyQual to log data autonomously. Log files must first be downloaded from the probe to your display device before they can be viewed, exported, or emailed. • Calibration function with ability to email the Cal Log: Use Calibration Logs Screen to see a list of Cal Logs stored in your device for the connected HyQual and any Cal Log that has been downloaded from other probes to the memory in your display device. • Parameter settings: list of Active and Available parameters. Add, Edit, Change order, Remove. • Display settings: View customization and Display configuration. Adjust the Screen layout and change the time between readings. • Other settings: Set HyQual time (time and date recorded with each data line during Logging), Show hidden sensors, Change the scrolling interval (time between readings), Activate location tracking or Geofencing function, Show HyQual simulators, Activate Keep connection to pin connection screen, and calibration settings for Calibration diagnostics, Calibration Learning. • App settings: export files to your device’s file system or email your files. • Touchscreen utility • Email function to email data snapshot files • Export, Download and Upload data to your app.

Screenshots

ScubaLink3 screens
HyQual Interface App3 screens

Verdict

The call

The clearest difference is update cadence: HyQual Interface App at weekly against ScubaLink's every 21 months. HyQual Interface App also leads on iOS requirement (12.1 vs 15.6). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

ScubaLink ships an update every 21 months, HyQual Interface App weekly. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 4 level
ScubaLink versus HyQual Interface App: the parameters behind the verdict, then further details
ParameterScubaLinkHyQual Interface App
PriceFreeFree
Update frequencyEvery 21 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.1 — better
Further details — not scored
Size8 MB15 MB
Age rating4+4+
DeveloperRoyal EijkelkampKisters AG

In-app purchases

None

ScubaLink

No in-app purchases

None

HyQual Interface App

No in-app purchases

Questions

Is ScubaLink free?
ScubaLink is free to download, with no in-app purchases.
Is HyQual Interface App free?
HyQual Interface App is free to download, with no in-app purchases.
Do ScubaLink or HyQual Interface App have ads?
Neither ScubaLink nor HyQual Interface App shows ads.
Which is updated more often, ScubaLink or HyQual Interface App?
ScubaLink ships an update every 21 months, and HyQual Interface App weekly. Most recently, ScubaLink was updated on October 10, 2026 and HyQual Interface App on October 2, 2026.

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