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Wärtsilä iSailor icon
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Wärtsilä iSailor

Wartsila Voyage Sweden AB · Navigation · United States store
NOT IN TOP 100 HERE
View on App Store ↗ Instagram card
Revenue a month, worldwide EST
$4.7K
Likely $1.6K to $14K
▼ 99.5% in 15 days
New ratings
+0
in 4 days, 229 in total
Rating
3.3 of 5
12 ratings in this store
Countries it ranks in
37
was 40 on Oct 19, 2026

Revenue

Estimated from the grossing charts of Oct 25, 2026 in the 53 countries we track, and ratings growth on the App Store.

EST. REVENUE / YEAR · WORLDWIDE
$55.8K
No Google Play version found
EST. LIFETIME DOWNLOADS
420 to 1.2K
Estimated from ratings count
WHERE IT EARNS · EST. / MONTH
  • Germany #69 Navigation$1.1K · 23%
  • Spain #40 Navigation$1.1K · 23%
  • United Kingdom #55 Navigation$800 · 17%
  • Netherlands #88 Navigation$666 · 14%
  • Norway #36 Navigation$362 · 8%
  • Finland #13 Navigation$321 · 7%
  • New Zealand #30 Navigation$171 · 4%
  • Austria #43 Navigation$88 · 2%
2 more countries
  • Poland #48 Navigation$79 · 2%
  • Egypt #57 Navigation$22 · 0%
HOW SURE ARE WE
Small app: combines its grossing ranks with ratings growth (1.2 new ratings a month on average since launch). Tested on 418 apps with verified revenue: typically off by about 2.6 times, so the range is wide. Countries we don't track (and Google Play in China, which doesn't exist) aren't included, and neither are ads or web payments. Gross revenue before store fees.
RATINGS
12
AVG RATING
3.25
PRICE
Free
AGE
15.9y
LAST UPDATE
230d ago
VERSION
1.13.4
SIZE
55 MB
AGE RATING
4+

Last 30 days

From our daily snapshots of every grossing chart and daily ratings counts.

DAYS IN A GROSSING CHART
30 / 30
COUNTRIES NOW
33 (was 14)
NEW RATINGS, LAST 4 DAYS
+0
EST. REVENUE A MONTH, DAILY · APP STORE EST
Show daily values
Sep 27, 2026$103.7K a month
Sep 28, 2026$74.6K a month
Sep 29, 2026$67.8K a month
Sep 30, 2026$57.4K a month
Oct 1, 2026$69.1K a month
Oct 2, 2026$3.5K a month
Oct 3, 2026$3.5K a month
Oct 4, 2026$3.3K a month
Oct 5, 2026$3.5K a month
Oct 6, 2026$3.5K a month
Oct 7, 2026$3.5K a month
Oct 8, 2026$3.5K a month
Oct 9, 2026$3.6K a month
Oct 10, 2026$874.2K a month
Oct 11, 2026$3.8K a month
Oct 12, 2026$3.8K a month
Oct 13, 2026$112.5K a month
Oct 14, 2026$67.1K a month
Oct 15, 2026$72.3K a month
Oct 16, 2026$85.8K a month
Oct 17, 2026$102.5K a month
Oct 18, 2026$140.6K a month
Oct 19, 2026$98.5K a month
Oct 20, 2026$163.2K a month
Oct 21, 2026$111.2K a month
Oct 22, 2026not in a grossing chart
Oct 23, 2026$4.8K a month
Oct 24, 2026$4.7K a month
Oct 25, 2026$4.7K a month
Oct 26, 2026not in a grossing chart
The same estimate as the headline, saved every day. Best rank Sep 27, 2026: #7 Navigation · ID. Now: #5 Navigation · PH.
RATINGS IN THE CORE COUNTRIES, DAILY
Show daily values
Oct 22, 2026229 ratings
Oct 23, 2026229 ratings
Oct 24, 2026229 ratings
Oct 25, 2026229 ratings
Oct 26, 2026229 ratings
229 on Oct 22, 2026, 229 on Oct 26, 2026. New ratings track new downloads, even outside the charts.

Money and momentum

Measured from the store, not estimated.

WHAT IT CHARGES
10 purchases listed
  • USA. Nantucket to Cap May, NJ$4.99
  • USA. Gulf Coast. Florida$4.99
  • USA. Atlantic Coast. Florida$4.99
  • USA. Ri to the Canadian border$4.99
  • USA.Chesapeake & Delaware bays$4.99
  • USA. Norfolk to Jacksonville$4.99
  • Caribbean Sea. Lesser Antilles$10.99
  • AIS Receiver Support$11.99
Top in-app purchases as listed on the App Store, in local prices.
REVIEW MOMENTUM
0.3 reviews / week
  • Trendfalling
  • Recent reviews average3.1 stars
  • Recent 1 and 2 star share43%
From the latest 245 written reviews, covering 5787 days.
RELEASE CADENCE
0 updates in 90 days
  • Typical gap between releases45 days
From the last 25 versions listed on the App Store.
RATING BREAKDOWN
12 ratings
5★50%
4★0%
3★8%
2★8%
1★33%

What users want

From the latest 245 reviews on the United States App Store, Dec 22, 2010 to Feb 21, 2026: 43% are 1 or 2 stars. Open a theme to read what people wrote.

WHAT THEY COMPLAIN ABOUT · SHARE OF BAD REVIEWS
Price and subscription47%

49 of the 1 and 2 star reviews.

★★★★★ I had several charts renewing their subscriptions in this last year.
★★★★★ Think twice about spending money on this app.
★★★★★ I cancelled my Wartsila subscription and am giving Savvy Navy a try.
Worse after an update26%

27 of the 1 and 2 star reviews.

★★★★★ They got the money but the actual charts in app did not update.
★★★★★ It is now Apr 2024 and I have received nothing from customer support, in spite of sending several e-mails requesting an update.
★★★★★ $25 annually for an app that hasn't been updated in almost FOUR years.
No customer support17%

18 of the 1 and 2 star reviews.

★★★★★ Emails to support were never answered.
★★★★★ And they aren't replying to support emails.
★★★★★ I can't restore my charts, there are no expiration dates on my purchases, and I can't report a problem or email support.
Bugs, things not working14%

15 of the 1 and 2 star reviews.

★★★★★ I purchased 2 charts on this app and both fail to open every time.
★★★★★ I have been trying to troubleshoot with wartsila for 3 months now, with multiple emails, calls, and internet inquiries about the Pilot AIS portion of this App not working.
★★★★★ No updates in years and the support site doesn't work.
Lost data, sync, backup13%

14 of the 1 and 2 star reviews.

★★★★★ Sounds like they may have gone out of business.
★★★★★ I can't restore my charts, there are no expiration dates on my purchases, and I can't report a problem or email support.
★★★★★ Deleted the app and moved on to a better product.
Wrong or poor results12%

13 of the 1 and 2 star reviews.

★★★★★ The new update policy to charge a subscription is wrong-headed, you are making a big mistake!
★★★★★ The currents really rip, up there, so it's critical to have down-to-the-minute accuracy on tides.
★★★★★ Unfortunately this makes it useless in any professional capacity.
Slow, laggy, battery3%

3 of the 1 and 2 star reviews.

★★★★★ Since the last update all this app does is open to the loading screen and then crash.
★★★★★ I also use the Marine Traffic AIS app and while it has a 1-5 min lag it always shows all the AIS equipped traffic.
Crashes and freezes2%

2 of the 1 and 2 star reviews.

★★★★★ Since the last update all this app does is open to the loading screen and then crash.
★★★★★ Please update the app for iOS 8. I can't use this at all anymore.
WHAT THEY ASK FOR
  • Would love to have better integration with newer versions of ipad or more customizable instrument panels 5★, Jul 4, 2023
  • I WANT A REFUND!!!!!!! 1★, Dec 23, 2018
  • There is no reason we should have to pay outrageous amounts of money for a subscription services. 1★, Dec 4, 2018
  • really wish there was some way to roll back changes on apps.... 1★, Nov 29, 2018
  • However, it needs an option to allow location access when not using. 4★, Mar 12, 2017
  • Also, MPH would be nice to see. 4★, Mar 12, 2017
  • Still wish it had a few more features but that anchor alarm is perfect I love to see a real sharp graphic of where I drift. 3★, May 26, 2016
  • If so would be nice in boat settings to be able to adjust that to reflect on charts . 3★, May 26, 2016
WORDS THAT KEEP COMING UP IN BAD REVIEWS
purchased charts8subscription service6customer service5rip off5existing customers5already paid4isailor since4business decision4new owners4i'm done3customer support3new subscription3
WHAT THEY LOVE · SHARE OF GOOD REVIEWS
Easy to use25%

30 of the 4 and 5 star reviews.

★★★★★ Some of the features require some practice to master but it's generally very intuitive and has lots of great features.
★★★★★ The user interface is simple, but does everything I need it to do.
★★★★★ It is easy to use, intuitive, and a powerful piloting tool
Accurate, great results17%

21 of the 4 and 5 star reviews.

★★★★★ I use iSailor to navigate my Alberg 35 from Baltimore on the Chesapeake. I've been using it for a couple of years and find that it's easy to create routes. I like that I can go back and forth between my iPhone 5 and…
★★★★★ charts are cheap, the weather program works well as does AIS.
★★★★★ There are no bugs in it, all features are well synchronized and quality is amazing.
Worth the money12%

14 of the 4 and 5 star reviews.

★★★★★ I paid for the marina data and it is fine (cheap enough that it is worth it, but could have more robust data and a feature to sort by distance).
★★★★★ Lag free, with no stupid track ball interface, and I find the interface less frustrating to set up routes on (even though I'm using an iPhone's minuscule display).
★★★★★ charts are cheap, the weather program works well as does AIS.
Looks great9%

11 of the 4 and 5 star reviews.

★★★★★ The user interface is simple, but does everything I need it to do.
★★★★★ Lag free, with no stupid track ball interface, and I find the interface less frustrating to set up routes on (even though I'm using an iPhone's minuscule display).
★★★★★ I love the usability of the interface, they have a very good guide to get you going and then from there you can get the hang of it pretty easy.
Useful, it helps7%

8 of the 4 and 5 star reviews.

★★★★★ And being able to see future currents helps planning for currents throughout the day.
★★★★★ Excellent app and very useful for passages with weather integration with Weather Track.
★★★★★ I used this for the first time last night, and I was impressed. I couldn't believe the number of very shallow locations right out in the middle of the river that I had no idea were there. I tested it and it guided me…

Found by matching words and phrases in the reviews, not read by a person. A review can count toward more than one theme.

What users say

Latest reviews, United States App Store.

★★★★★Feb 21, 2026
Detail vanishes randomly from purchased charts.

You buy a chart and expect that what you’ve purchased remains intact, but it doesn’t. It degrades as they pull detailed data that you’ve already paid for. You’d expect purchased updates to provide the latest survey data, and by all rights they do — but if you don’t need the latest and greatest survey data, you’d expect the old charts you bought to show you everything you bought. Nope — they pull the rug out from underneath you and dangle a $6 chart upgrade out there with no guarantee that the corrupted view of the area of interest will be any improved after taking the bait. I’m done with this app. Open CPN on raspberry pi it is.

★★★★★Feb 1, 2026
Active Unlock AIS Option

Kindly requested to active AIS options to be used with new navigation equipments. In new devicee we receive ship data through AIVOD sentencesb that unfortunately that is locked in the app.

★★★★★Dec 21, 2025
Fix to update the chart

Please fix the update of the chart yearly

★★★★★Aug 8, 2025
Bye bye moneys.

I purchased 2 charts on this app and both fail to open every time. I have not been able to access or view either of the charts that I purchased. It keeps telling me to “try again later” when trying to download a purchased chart but it doesn’t work “later” either. Been trying for days. Updating phone, deleting and redownloading the app, nothing is working. Good thing I’m on land. Do not recommend.

★★★★★Jul 30, 2025
Is iSailor back?

An update?! Is iSailor coming back? My chart still shows large chunks of the chart missing around Stonington, ME. I was just getting used to Timezero, but maybe I’d switch back…

★★★★★Jun 27, 2025
App is not supported or updated.

I had several charts renewing their subscriptions in this last year. They got the money but the actual charts in app did not update. Emails to support were never answered. Disappointed, cancelling all subscriptions.

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Same category, earning about as much.

Store screenshots

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App Store ads

Apple Search Ads this app ran in the last 90 days, from Apple's public ad repository.

No App Store ads in the EU
None in the last 90 days.

Apple only publishes ads shown in the EU (EU Digital Services Act), with a 7 day delay. An app that advertises only outside the EU shows nothing here.

Growth research

Where this app is buying and earning its users. Each link opens pre filtered.

ASO keywords

Most repeated terms in the listing. Highlighted ones also appear in the title.

chart12isailor10option8option nmea6service6gps6nmea6information4charts4via4ais4optional4rtsil isailor3navigational information3chart folios3chart correction3built gps3gps nmea3nmea gps3ais class3interface option3track user3service optional3time eta3

What's new in 1.13.4

stability improvement

Released Dec 15, 2010. Current version shipped Mar 10, 2026.

Store description

Wärtsilä iSailor is an easy-to-use marine and river navigation application for amateur seafarers. iSailor provides a clear presentation of navigational information, electronic charts and additional content. TX-97 vector charts supported by iSailor are recognized worldwide as one of the most accurate and reliable sources of navigational information. Chart folios can be purchased and downloaded in the iSailor Chart Store utilizing the standard iTunes Store payment/purchasing procedure. Chart correction service is provided on annual basis via the auto-renewable subscription service. iTunes will charge payment after confirmation of the chart correction purchase. You may manage your subscriptions and turn off the auto-renewal service in the Account Settings. Your subscription will automatically renew unless auto-renewal is turned off at least 24 hours before the end of the subscription period. You can cancel your subscription in the Chart Store any time. All previously purchased chart folios will remain available for you and can be restored from the service via the Chart Restore function. To receive subsequent chart corrections for your purchased charts, you will need to subscribe to the annual updates in the Chart Store. The application works on iPhone and iPad using built-in GPS, NMEA Wi-Fi GPS or an external Bluetooth GPS. Supported devices (iOS version 11 and higher): • iPhone 5S or higher • iPad 5 generation or higher iSailor features: • Positioning system: iOS (Built-In GPS), NMEA GPS or AIS Class B (Option) • AIS Class A NavData interface (Option) • NMEA Heading and Rate-Of-Turn sensors (Option) • NMEA Echo Sounder with a graphical 2D echogram and water temperature sensor (Option) • NMEA Wind Sensor, including True & Relative wind calculation (Option) • NMEA Autopilot interface (Option) • Display of charts, routes, track(s) and user objects • AIS target presentation. Target contours and dimensions (Option) • Internet AIS service (Optional subscription) • Weather service (Optional subscription) • Tides and tidal currents (Optional subscription) • Sailing guides, regional marinas (Optional subscription) • North Up, COG Up, Head Up and Route Up chart orientations • Information on any vector chart objects • Free cursor, Point-To-Point and Own ship referenced ERBL functionality • Monitoring of navigational data: Position, Course (COG) and Speed Over Ground (SOG) • Route creation by the graphic and tabular methods. “Go To” routes. • Waypoint monitoring: Bearing to WP, Distance to WP, XTD, Time-To-Go and ETA • Schedule information: Time-To-Go and ETA to any selected waypoint ahead • Multi-language support • Multi-unit support • Custom track colors • Day and night chart palettes • Alarm monitoring functionality • Route, track and user object: export/import via GPX, KML and KMZ formats • Advanced Logging and Playback function (Option) • User object sharing via Facebook, Twitter, iMessenger, eMail NOTE: Continuous use of the GPS running in the background can dramatically decrease the battery life. Wärtsilä iSailor application may use your location even when it’s not open, which can decrease battery life of the device iSailor EULA: https://www.wartsila.com/docs/default-source/marine-documents/transas/WVL-EULA.pdf iSailor Privacy Notice: https://www.wartsila.com/legal-privacy/privacy Questions? Please contact us at isailor.support@wartsila.com Sincerely yours, iSailor Team

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