Appworthy

Marine Instruments

Boat Instruments, NMEA Display

Stolk.cc
Download on theApp Store
Store ratingNo rating
Price$7.99Listed price
Age4+Store age rating
Size1 MBiPhone download
CategoryUtilities
DeveloperStolk.cc

What we found

Full report

Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.

Money

  • $7.99 to download.

Not yet tested.

The store currently lists version 2.0, updated 2026-07-02.

Preview

Screenshot 1Screenshot 2Screenshot 3Screenshot 4

Store screenshots supplied by the developer.

About this app

Marine Instruments turns your iPhone into a boat instrument display. Connect it to your boat's NMEA 0183 WiFi gateway and see your real instruments — wind, depth, speed and heading — on a big, glare-friendly screen. No gateway? The built-in sensors still give you heel angle, a barometer with storm alarm and a GPS trip log.

BOAT INSTRUMENTS OVER WIFI (NEW)

• Connects to any NMEA 0183 WiFi gateway: Orca Core, Yacht Devices, Digital Yacht, Vesper and many more

• Speed over ground (SOG), depth, apparent wind angle & speed, heading

• TCP or UDP, configurable host and port (standard 10110)

• Automatic reconnection when the connection drops

• Values mark themselves stale ("--") within seconds if data stops — no misleading frozen numbers…

From the developer’s store description.

For developers and the curious

The full report

The evidence, sources, measurements and versions behind every label above.

Findings and evidence

Not yet tested
Not yet tested. No analysis has been published for this app. A missing label is not a clean bill of health.

What reviewers report

No review coverage

No review analysis published for this app.

Measurements

2 measured · 6 not assessed

“Not assessed” means we could not measure it. It is never a zero and never a pass.

From store data and reviews

Developer replies to reviews
Not assessed
Fewer than 50 reviews scanned — too few to state a rate
Price in the store description
The store description doesn’t list prices (most don’t)
Cancelling, in the store description
The store description doesn’t say how to cancel (most don’t)
Themes reported by reviewers
Not assessed
This app's reviews have not been assessed yet
Five-star share of ratings
Not assessed
No rating histogram has been captured for this app

In the app package we scanned

No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.

Sensitive permissions
Not assessed
No package has been scanned for this app
Analytics or tracking SDKs in the scanned package
Not assessed
No package has been scanned for this app
Advertising SDKs in the scanned package
Not assessed
No package has been scanned for this app
How we know

Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured

Versions and dates analysed

Not yet tested

Not yet tested. No analysis has been run for this app, so there is no version or date to report.

Store update history

Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.

App Store

Version 2.0 · 2026-07-02
Marine Instruments 2.0 — your boat's real instruments, on your phone. • NEW: NMEA 0183 over WiFi. Connect to your gateway (Orca Core, Yacht Devices, Digital Yacht, Vesper…) and see SOG, depth, apparent wind and heading live. TCP or UDP, auto-reconnect, stale-data indication. • NEW: Real night mode. Every screen — attitude indicator, barometer, graphs, trip log and the new instrument tiles — now dims to red-on-black, and the setting is remembered. • Barometer fallback: phones without a barometer can use gateway pressure (MDA sentences) for the trend and storm alarm. • Honesty fixes: removed non-functional background-recording scaffolding. Recording happens while the app is open (the screen…

Shortened here; the full notes are on the store listing.

Assessment record

Status
Not yet tested
App identifier
marine-instruments
Sources used
None recorded
Reviews read
None recorded
Package examined
No package scan
Human inspection
Not completed
How we know
Measurement vocabulary
1.4

Store facts

App Store

What the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.

App Store

Store rating
Not supplied
Version
2.0
Updated
2 Jul 2026
Price
$7.99
Age rating
4+
Size
1 MB
Open in App Store
Developer
Stolk.cc
Category
Utilities
Listing price
$7.99

No itemized purchase list is available for this listing.

Method and limits

What this report can and cannot show

What a missing label means

Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.

Limits of this report

  • A package scan is static. It identifies code and text in one Android build. It does not measure a live ad session, test a deletion request, or count the steps needed to cancel.
  • Reviews keep their sample. A review-only charge shows distinct reviewers, the share and the sample size, and is published only once it clears that label’s published threshold. Calibration labels are machine-drafted and not yet confirmed by a person.
  • Not assessed is a state. It is never a zero and never a pass.
  • A missing label is not a clean bill of health. It means the evidence did not support one, not that the app is problem-free.
Not yet human-reviewed. A human review gives an app hands-on, recorded measurements. None has been run for this app. Hands-on inspections are not yet open.
Review thresholds Read the methodology For developers

Request a correction

[email protected]

Write to [email protected], or use the form. Name the finding, the app version and the evidence that needs correcting. Factual corrections are free and never depend on buying anything.

Report a factual error — free Email a correction