# Submarius: Diving and fishing — Diving Conditions & Visibility

> Marine conditions forecast for diving, fishing, and boating with a single verdict score. (iPhone/iPad app by Roger VanDeburgh.)

- Source: https://appshunter.io/ios/app/submarius-diving-and-fishing/id6762419192 (this page in markdown: same URL + `.md`)
- Developer: [Roger VanDeburgh](https://appshunter.io/developer/1860757742)
- Category: Sports, Navigation
- Price: Free with in-app purchases
- Rating: 5.00/5 from 11 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 30 MB
- Languages: Greek, European Spanish, American English, European Portuguese, Filipino
- Released: 2026-04-19
- Data updated: 2026-09-03
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/submarius-diving-and-fishing/id6762419192/reviews.md

## What is Submarius?

Submarius reads the ocean and reports everything you need to know to make a decision. Dive weather, bite forecast, and water clarity forecast for spearfishing, diving, fishing, and boating — built for people who are tired of stitching together four apps to decide if today is worth the drive.

App Sections:
- Conditions Dashboard
- Map (with reefs and wrecks, live/forecasted radar, water clarity overlay, wind, and more)
- Fish (what species can I expect to find at my set location, what are the laws and regulations, images of the fish)

Every factor — wind, swell, tide, moon, pressure, water temp, water clarity — goes into a single 0–10 verdict you can read in two seconds. Tap any factor to see the numbers and the reasoning. No black-box "AI" — every input is transparent.

Water Clarity Forecast
No other major app has this. Submarius blends satellite turbidity (NOAA CoastWatch Kd490), USGS river-plume detection, wave-mixing physics, and community post-dive reports into an honest Secchi-depth estimate with explicit uncertainty. Grounded in Lee et al. 2015 (R²=0.96). When we don't know, we say so.

Activity Modes
Spearfishing, freediving, scuba, rod-and-reel fishing, boating, sailing, surfing, kayak/SUP. Each mode reweights the verdict around what actually matters for that activity — clarity and tide for spearos, swell period and wind for surfers, bite windows for anglers, small-craft advisories for boaters.

Bite Score
Dive forecast with water clarity, bite score, swell, tide, and moon — every factor explained. Tide stage, moon phase, solunar windows, barometric trend, wind, and water temperature — combined into a 0–10 score, factor by factor. No secret formula. If we score a day a 3, you'll know exactly why.

Map Layers
Self-hosted bathymetry + sea-surface temperature + animated weather radar + wind particle flow + reef and wreck structure overlays. Finds drop-offs, temp breaks, and shelter without dragging you to another app.

Live GPS Tracks
Record your dive or fishing trip as a live blue track on the map. Useful for retracing drift, marking productive zones, or just remembering the line you swam.

Safety, Always Free
Shark-tag alerts (OCEARCH), community shark sightings, SOS, and buddy GPS sharing are permanently free for every user, every tier. No paywall, no trial — by design.

Privacy by default
Your spots stay your spots. GPS-fuzzed to ~1 km on anything public; precise location never leaves your device unless you explicitly share it. Post-dive clarity reports ship with H3-fuzzed coordinates only — we can't give away where you dive because we never see it.

Anonymous
Current conditions, 2-day forecast, basic bite score, and every safety feature work without an account. Sign up when you want to save spots or post catches.

Submarius Pro
Pro unlocks the 8-day forecast, premium map overlays, offline maps, unlimited saved spots, advanced bite score layers, full water-clarity horizons, and catch history export. $12.99/month or $99/year with a 7-day free trial. Limited $149 lifetime tier for the first 1,000 founders.

Subscriptions bill through your Apple ID and renew automatically unless cancelled at least 24 hours before the end of the current period. Manage in Settings → Apple ID → Subscriptions.

Privacy: https://submarius.com/privacy
Terms: https://submarius.com/terms

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Submarius Pro | $12.99 | per month |
| Submarius Pro | $99.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Submarius Pro — Lifetime | $149.99 | one-time |


## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/submarius-diving-and-fishing/id6762419192/reviews.md

### 5/5 — Amazingly helpful app

*2026-06-01*

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.

### 5/5 — Cool app

*2026-05-02*

Very useful. Cool idea for an app.

### 5/5 — Verdict

*2026-04-26*

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

### 5/5 — Awesome App

*2026-04-25*

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.

**Developer response:** Thank you for the review! Happy that you find it useful!

### 5/5 — Game-Changer for Fishing Days 🌊🎣

*2026-04-24*

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.

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

### 5/5 — Beautiful app

*2026-04-24*

Beautiful design, great features, good information.. just an all around well designed app.

**Developer response:** Thank you for the review and for the compliment :)

### 5/5 — All In One App for the Water

*2026-04-23*

Great app for kayak fishing. I don’t have to reference several sites anymore for wind speed and water temperature. I would highly recommend for boaters and anglers.

**Developer response:** Thank you for the review! Happy that Submarius can simplify the tech in your fishing trips!

### 5/5 — Great App!

*2026-04-23*

The UI is smooth and gives me the data I need.

**Developer response:** Thank you for the review! Welcome to the Submarius fam :)

### 5/5 — The bomb

*2026-04-21*

I am very impressed with this app. It has obviously been designed with a lot of features that are all in one app rather than separate apps. it definitely was very well thought out!

**Developer response:** Thank you for the review! Glad to have you on board :)

## Frequently asked questions about Submarius

### 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.

## Version history (last 5 releases)

### 1.3.36 — 2026-08-31

The verdict now opens as a shape with band-colored glow and tappable factor cards
Secondary activity modes constrain the verdict and storm hours and NWS warnings cap it
A new global bite-score heatmap map layer
Wave-coverage fixes

### 1.3.34 — 2026-08-29

• The map now follows your live position while you record a trip, so your track draws without you touching the map.
• More shipwrecks worldwide, now on the map.
• A cleaner verdict share card with a simpler layout, and Copy now gives you a link.

Thanks for the feedback. Keep it coming.

### 1.3.32 — 2026-08-27

New: a Currents card on the Today screen for divers, spearos, and freedivers, so you can read the water movement before you get in. Pick on Map now opens at a full globe view, the location search shows which activity it is setting, and there is the usual round of fixes and refinements under the hood.

### 1.3.31 — 2026-08-21

• Improved home screen layout
• The hourly weather cards are now tappable. Open one to see that hour in detail, with radar for that time.
• Smoother radar, with a cleaner reveal when the drawer opens.
• Reefs and wrecks are more accurate: correct wreck depths, cleaner reef shapes, and more detail when you tap one.
• A cleaner home screen, with a clearer verdict score and smoother tiles.
• Plus smaller fixes and polish.

### 1.3.24 — 2026-08-08

Promotional and sale pricing now displays consistently and always matches what you are charged.
More reliable location handling.
Reliability and performance improvements under the hood.

## More apps by Roger VanDeburgh

- [RuckusTime](https://appshunter.io/ios/app/ruckustime/id6773891852)

All apps by Roger VanDeburgh: https://appshunter.io/developer/1860757742

## Related topics

[spearfishing tracker dive log](https://appshunter.io/ios/topics/spearfishing-tracker-dive-log) · [scuba diving fishing](https://appshunter.io/ios/topics/scuba-diving-fishing)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-03.*