“I have just crossed the Bay of Biscay. 25 miles from shore all my charts disappeared. I have been nagged to renew my subscription, but surely my old charts should have been safe? I wasn't renewing Europe as I don't need it now, but I was…”
Independent automated assessment · 3 signal sources · 415 reviews scanned · analyzed 2026-10-04.
2.8 ★50,939 ratings
5M+Downloads
4+Age rating
161 MBApp size
FreeIn-app purchases
About this app
Get up-to-date, detailed charts you can use offline plus a boatload of features on your mobile device, so they’re on hand wherever you go. The Boating app is a must-have for cruising, fishing, sailing, diving and all your activities on the water. Try it free for a limited time. To continue using charts and advanced features, you can purchase a yearly auto-renewable subscription*.
A COMPLETE PACKAGE • INTERNATIONALLY RENOWNED NAVIONICS® CHARTS: Use them offline along with multiple overlays, so you can be more aware of what’s above and below the water. - NAUTICAL CHART: Use this premier marine reference to study port plans, anchorages and safety depth contours, locate navaids, marine services and more. - SONARCHART™ HD BATHYMETRY MAPS: Extraordinary 1’ (0.5 meter) HD bottom contour detail is the ideal tool for locating new fishing areas. - U.S.…
Preview
Real screenshots from the store listing.
Independent evidence report
Evidence and review signals
This is where the page changes from an app-store listing into an evidence report: findings, important reviews, pricing and a dated history.
Which version this describes
When we ran this analysis, and what the store lists now.
We cannot tell which version of the app this analysis describes. It was run 2026-10-04 , and the app may have changed since.
The store currently lists version VARY, updated 2026-08-19.
What we measured
Each line is a measurement published as a measurement, never a verdict.
Each line is a measurement, published as a measurement. Where we have not looked, the line says so rather than reading as a zero.
Developer replies to reviews
Replies to at least 1 review in 20
Price in the store description
States no price and billing period
Cancelling, in the store description
Does not say how to cancel
Themes reported by reviewers
2 themes reported
Counted from the reviews we have read for this app. "No theme reported" means no theme reached our reporting threshold — it is not a finding that nothing is wrong with this app, and we do not say it is.
Five-star share of ratings
Under 65% five-star
Arithmetic on the stores' own published rating counts. It says nothing about why the ratings fall where they do.
In the 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 about the app, not a finding about it.
Graded bands · predicate set 1.4 · how these are measured
What the analysis found
App-specific findings, grouped by what each one rests on. How they are graded lives on its own page.
Positive evidence 1
Things this app does right, published at the same strengths as the catch list.
Developer says data deletion can be requested
The developer's data-safety disclosure on the store states that users can request deletion of their data, or the app's own text offers a way to delete the account. This restates what the developer declares; it is not a test of whether deletion works. Apple publishes no equivalent disclosure, so on an Apple-only listing only the app's own text can support it.
What we saw: The developer's store data-safety disclosure states that data deletion can be requested; we have not seen a deletion control in the app's own text
One source only — shown, not confirmed 2
A single kind of evidence. We publish these because withholding them would be the bigger distortion, and we do not treat any of them as a finding we stand behind.
Reported by users: Upgrade prompts use guilt-trip wording
Declining an upgrade is written as a loss ('No thanks, I don't want to improve'), or users report being repeatedly pushed to subscribe during normal use.
What we saw: Constant upsell pressure: raised by 5 distinct reviewers (1.2% of 415 reviews scanned)
Reported by users: Price keeps rising
The price of the paid tier has been raised on existing users.
What we saw: Price keeps rising: raised by 10 distinct reviewers (2.4% of 415 reviews scanned)
Highlighted reviews
Representative public review excerpts shown as user reports, not Appworthy audit evidence.
“Since Garmin disabled all chart info after 1 year, this app is a complete scam in comparison to the original Navionics app. Shady business practice is making a significant change in the subscription based service and hiding it in the…”
“App doesn't work at all now. Keeps prompting me to purchase a subscription despite me already owning one. Got passed that after much messing around, get into the charts for the area I purchased, and nothing shows up. Instead im hit with…”
Assessment & version history
App changes and Appworthy events in one timeline.
Store listing updated to version 24.4.
What this app sells
Useful store-disclosed pricing, kept below the app listing.
Items shown0
Lowest—
Highest—
Google Play does not publish per-purchase prices.