Daily Updates

Know the visibility before you dive.

Check underwater visibility at your favorite spots, updated daily from satellite data. No more wasting fuel on murky water.

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$10/month after trial ends

9:41

Favorites

North Point Reef
3.2 miles offshore
Clear
Vis: 25m Low Chl-a
Shark's Cove
0.8 miles offshore
Fair
Vis: 12m Rising Chl-a
Live Chlorophyll
Poor Vis
Best Vis
Forecast
Blue Water
Visibility
35m+
Yesterday Today Tomorrow

We talk to the satellites, you check the viz

NASA and Copernicus satellites are the engine behind VizCheck

Step 01

Satellites take a snapshot

We pull high-resolution optical data from Sentinel-3 and NASA satellites every single day to capture the ocean's state.

Step 02

We process the data

Our algorithms process the raw data, analyzing chlorophyll density and turbidity to map out exact visibility zones.

Step 03

You see the viz

The processed clarity map feeds straight into VizCheck. You get an instant, easy-to-read forecast on your phone.

NZ + AUS

Built for New Zealand and Australia

Experience high-definition chlorophyll & visibility forecasts across the entire Australian and New Zealand coastline.

Australia
Australia
Live Coverage
New Zealand
New Zealand
Live Coverage

They love it, so will you

“Finally, an app that actually tells me when the water is clear. Saved me so many wasted trips to the coast.”
Ellie Hayden
“The accuracy of the chlorophyll maps is insane. I use it for spearfishing every weekend. Essential gear.”
Zac Kenway
“Living in NZ, the weather changes fast. VisCheck helps me pick the perfect dive spot every single time.”
Jordy Bards
FAQs

Got questions?
Here’s the answers.

What is chlorophyll?
Chlorophyll concentration is a direct indicator of phytoplankton abundance. Lower chlorophyll levels typically correlate with cleaner, bluer water and better visibility for diving and spearfishing.
How often is the data updated?
We update our maps daily. As soon as the Sentinel-2 and NASA satellites pass over your region, we process the optical data and update the app within hours.
How accurate is the satellite data?
Extremely accurate. We use high-resolution multispectral imagery with a resolution of up to 10 meters per pixel, allowing you to see conditions on specific reefs and shoals.
What happens on cloudy days?
Optical satellites cannot see through thick cloud cover. On these days, we provide the most recent clear scan and use predictive modeling to estimate current conditions based on ocean currents.
Can I use it on my boat without signal?
Yes. Our Pro plan includes an Offline Maps feature. You can download the latest chlorophyll and visibility charts while on land and access them via GPS when you are offshore.
Can I cancel anytime?
Absolutely. There are no lock-in contracts. You can manage your subscription directly from your account settings and cancel whenever you like.
Does it work on iPhone/Android?
Yes, VisCheck is fully responsive and works as a Progressive Web App (PWA) on both iOS and Android devices, giving you a native app-like experience.
Pricing

Simple, transparent pricing

Start with a 3-day free trial. No credit card required for trial.

$9.99 /mo
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Daily Chlorophyll Updates
High-Res Satellite Imagery
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