SST Online has been the leader in providing superior high resolution sea surface data imagery for over 20 years!

Interactive sea surface temperature, turbidity and altimetry charts with REAL TIME GPS VESSEL TRACKING! We cover the entire US East coast, the Florida Gulf coast, the Florida Keys and the Bahamas. Our HD² display technology has 3X the resolution of of other services and our detailed fishing charts and interactive chart interface are simply the best in the business. Real-time GPS vessel tracking right on our high resolution charts so you can take your iPhone or iPad with you offshore to see exactly where you are and where you need to be to find that edge and CATCH MORE FISH!


- Detailed SST, turbidity and altimetry charts using HD² display technology.
- Real time vessel tracking (with GPS capable device).
- Waypoint, distance and bearing functions.
- Tap screen to display waypoints, GPS coordinates and water temperature - pinch to zoom.
- Wi-Fi or 3G chart downloads for on the go updates.
- Localized fishing charts with popular named fishing locations.


- In app purchase available: $69.99 for one year subscription, auto renewed.
- Payment will be charged to your iTunes Account at confirmation of purchase.
- Subscription automatically renews unless auto-renew is turned off at least 24 hours prior to the end of the current period.
- Account will be charged $69.99 for renewal within 24 hours prior to the end of the current period.
- Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.
- No cancellation of the current subscription is allowed during the active subscription period.
- See our privacy policy here:
- Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to SST Online.

What’s New

Version 1.1

This update is signed with Apple’s latest signing certificate. No new features are included.

Ratings and Reviews

2.6 out of 5
8 Ratings

8 Ratings

Paul-J-M ,

Needs work

I could not get this app to work even on my new IPad Pro.
Very poor menu and support. After 3 emails that offered very little help, I asked them three times to pick up the phone and call me, i am still waiting...

MikeBots ,

HD imagery and overlay detail the best

This app gets better with each update. The overlay detail is the best of any comparable service and the GPS functionality allows real-time plotting of your boat position on the high definition SST and turbidity charts! Takes a little practice to learn all of the features and updates are as regular as any other service - cloud cover can be a problem with any satellite data provider. These guys have been doing this on the web for over 20 years -highly recommended.

Ellie143256 ,

Keeps getting better and better

SST is company and has a product that continues to show strong improvements . With all the options that the program offers it has definitely improved our off shore fishing success. For any offshore fisherman this is an app that is well worth it.

App Privacy

The developer, SST Online, LLC, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


SST Online, LLC
11.7 MB

Requires iOS 9.2 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating
In-App Purchases
  1. SSTOL Annual Subscription $69.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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