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Submarius: Dive & Spearfishing

Submarius: Dive & Spearfishing

Diving Conditions & Visibility

11 ratings
9 reviews
🗺️ Navigation
☀️ Weather
Free
In-App Purchases

Details

  • Released
  • Updated
  • April 19, 2026
  • July 29, 2026

Features

Developer

Roger VanDeburgh
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🧾$149.99
In-App Purchase↘︎
⭐9
Reviews↘︎
❓8 answered
FAQ↘︎
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About

This app provides a comprehensive marine conditions forecast, including dive weather, bite predictions, and water clarity. It consolidates essential data into a single, easy-to-understand verdict for activities like spearfishing, diving, and fishing.

✓Consolidated marine conditions verdict
✓Honest water clarity forecast
✓Eight activity-specific modes
✓Transparent bite score factors
✓Interactive bathymetry map
✓Live GPS track recording
✓Free safety features
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+1

What's New in Submarius

1.3.20

July 29, 2026

- Home screen: richer condition factors and moon detail, with a reworked layout. - Water clarity improvements - Redesigned Home Screen widget. It now matches the in app conditions card, shows sea state and wave period, and automatically follows the spot you have selected. Cleaner layout at every widget size. - Faster map. Zoomed out views are prefetched, so panning and zooming out no longer waits. - Reliability and performance improvements under the hood.

More

Subscription plans

Submarius Pro

Forecast, map layers, advanced clarity & bitescore

$12.991 Month
How to cancel Submarius subscription ⁉️
1

In-App Purchases

$149.99

Submarius Pro — Lifetime

One payment. Pro features forever.

User reviews

Most RecentHighest RatedLowest Rated

Amazingly helpful app

This app is amazing it’s got all the information I need to go spearfishing and I don’t need to make 20 google searches to see if it’s a good day to head out. Plus I love how the few things that they are missing (which they are adding in) have links to go and show you the info. Great app for anyone doing fishing, spearfishing or even just diving.
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Cool app

Very useful. Cool idea for an app.
hvand614hvand614

Verdict

Works great, love the philosophy, it’s not just a dash board.
KkjedKkjed

Awesome App

This is a great tool for planning smarter fishing trips. It highlights real-time conditions (like weather and tides), lets you save fishing spots, and provides useful info on different fish species.
~Ember96~Ember96

Response from developer

Thank you for the review! Happy that you find it useful!

Game-Changer for Fishing Days 🌊🎣

Been using this app for fishing in Miami-Dade and it’s actually really helpful. The water clarity and “go or don’t go” rating makes it super easy to decide if it’s worth heading out. I like how simple and clean everything looks, and the trip tracking feature is a nice bonus too. Definitely useful if you’re into fishing or diving down here.
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Chuchi72202Chuchi72202

Response from developer

Thank you for the review! Very glad that you find the features helpful for decision making. Happy diving!

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FAQ

What is the verdict score in Submarius?

The verdict score is a single 0-10 rating that summarizes all marine factors like wind, swell, tide, and water temperature, making it easy to decide if conditions are worth pursuing for your activity.

How accurate is the water clarity forecast in Submarius?

Submarius provides an honest water clarity forecast by blending satellite data, river plume detection, wave-mixing physics, and community reports, achieving an R² of 0.96 in studies.

Does Submarius offer different modes for various activities?

Yes, Submarius has eight activity modes including spearfishing, freediving, scuba, rod-and-reel fishing, boating, sailing, surfing, and kayak/SUP, each reweighting the verdict based on what matters most for that activity.

Are safety features in Submarius free?

Yes, all safety features in Submarius, such as shark-tag alerts, community shark sightings, SOS, and buddy GPS sharing, are permanently free for all users, regardless of subscription tier.

How does Submarius handle user privacy for saved spots?

User privacy is a priority. GPS data for saved spots is fuzzed to approximately 1 km on public information, and precise locations are never shared unless explicitly chosen by the user.

What features are included in Submarius Pro?

Submarius Pro unlocks an 8-day forecast, premium map overlays, offline maps, unlimited saved spots, advanced bite score layers, full water-clarity horizons, and catch history export.

What is the pricing for Submarius Pro?

Submarius Pro is available for $12.99 per month or $99 per year, with a 7-day free trial. A limited lifetime tier is also offered for the first 1,000 founders at $149.

Does Submarius have ads?

No, Submarius does not contain advertisements. The app is free to use with optional in-app purchases for premium features.