# Erebus Scuba Dive Log & Deco — Planner, Gear, CCR & Holiday

> Complete dive management companion for recreational and technical divers. (iPhone/iPad app by Leviathan Systems Ltd.)

- Source: https://appshunter.io/ios/app/erebus-scuba-dive-log-and-deco/id6780519891 (this page in markdown: same URL + `.md`)
- Developer: [Leviathan Systems Ltd](https://appshunter.io/developer/1895611456)
- Category: Sports, Travel
- Price: Free with in-app purchases
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 54 MB
- Languages: American English
- Released: 2026-08-02
- Data updated: 2026-09-14
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/erebus-scuba-dive-log-and-deco/id6780519891/reviews.md

## What is Erebus Scuba Dive Log & Deco?

Erebus is the complete dive management companion for recreational and technical divers. Whether you're logging your first open water dive or planning a multi-gas technical descent, Erebus keeps everything in one place — beautifully organised and always offline-capable.
DIVE LOGGING
Log dives manually or import from Subsurface, UDDF, and CSV files. Capture depth profiles, gas mixes, temperatures, buddy details, surface conditions, and personal notes. View interactive dive profile charts and gas pressure gauges. Sync directly from compatible dive computers via Bluetooth.
DIVE PLANNING
Full Bühlmann ZHL-16C decompression planning with gradient factors. Interactive profile chart, real-time tissue saturation tracking, CNS/OTU monitoring, and PDF export. Supports open circuit and CCR configurations.
GEAR MANAGEMENT
Build detailed gear profiles with exposure suit, BCD, cylinder, and weighting configurations. Manage your full equipment inventory and link gear to individual dive logs.
CYLINDER CERTIFICATIONS
Track visual inspections, hydrostatic tests, and oxygen cleaning across UK/EU, US, and custom standards. Get push notification reminders before tests are due. Log test history with facility details and pass/fail records.
DIVE SITES
Browse and manage your personal dive site library with search and filters. Wreck sites include automatic Wikipedia integration for historical information. View site conditions, depth ranges, and access notes.
PHOTOS & VIDEO
Capture and organise your underwater photography in a masonry gallery. Link photos and videos to specific dives, mark favourites, and add captions. Videos are automatically compressed before upload.
CERTIFICATIONS TRACKER
Manage all your diving certifications in one place. Scan and store certification cards, track your course wishlist, and keep instructor details to hand.
DIVE TRIPS
Plan and log dive holidays with trip type, operator, location, and date range details. Link trips directly to your dive logs.
COMPRESSOR MANAGEMENT
Track diving compressors with runtime hours, service intervals, fill logs, and test certificates.
DIVE BUDDIES
Build a buddy list with photos and notes. Link buddies to individual dives to build a history of who you've dived with.
GAS CALCULATOR
Calculate best mix, fill capacity, gas blending sequences, and cylinder density. Real gas mode uses NIST REFPROP data for accurate high-pressure calculations.
WEATHER FORECASTS
7-day marine and atmospheric forecasts based on dive site location, so you can plan surface conditions before you travel.
ALWAYS OFFLINE CAPABLE
All your data syncs automatically when online and stays fully accessible when you're offline — on a liveaboard, at a remote site, or anywhere connectivity is limited.
Available in English, French, German, Spanish, Italian, and Swedish.
A 14-day free trial is included. Erebus Premium unlocks the full feature set with a monthly or annual subscription.
https://erebus.nammu-tech.com/terms
https://erebus.nammu-tech.com/privacy

## Key features

- Dive logging with profile charts
- Decompression planning (Bühlmann ZHL-16C)
- Gear inventory management
- Cylinder certification tracking
- Dive site library with Wikipedia integration
- Underwater photo & video organization
- Certification and dive trip planning

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $6.99 | per month |
| Annual | $69.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/erebus-scuba-dive-log-and-deco/id6780519891/reviews.md

### 1/5 — Subscription

*2026-09-04*

This is the first dive log app I’ve seen that requires a subscription. The one benefit I can say is that seeing this app made me laugh pretty hard. Having some things in one app would be nice and all but I’m not paying a subscription to log my dives. I’ll just stick to SSI for dive log, shearwater for planning, and Nitrox buddy for calculating.

## Frequently asked questions about Erebus Scuba Dive Log & Deco

### What is Erebus?

Erebus is a complete dive management companion for recreational and technical divers. It helps you log dives, plan dives, manage gear, track certifications, and more, all while being offline-capable.

### How much does Erebus cost?

Erebus is free to download and offers a 14-day free trial of Erebus Premium. After the trial, a monthly subscription is $6.99/P1M or an annual subscription is $69.99/P1Y to unlock the full feature set.

### Can I use Erebus offline?

Yes, Erebus is always offline-capable. All your data syncs automatically when online and remains fully accessible when you are offline, making it ideal for liveaboards or remote dive sites.

### What dive computers are compatible with Erebus?

Erebus can sync directly from compatible dive computers via Bluetooth. Specific compatibility details are not provided in the description, but it supports importing from Subsurface, UDDF, and CSV files.

### Does Erebus have ads?

No, Erebus does not contain advertisements. The app is free to download and offers premium features through a subscription model.

### What dive planning features does Erebus offer?

Erebus provides full Bühlmann ZHL-16C decompression planning with gradient factors, an interactive profile chart, real-time tissue saturation tracking, CNS/OTU monitoring, and PDF export. It supports both open circuit and CCR configurations.

### How does Erebus handle gear and certifications?

You can build detailed gear profiles, manage your equipment inventory, and link gear to dive logs. It also allows you to track cylinder certifications with reminders for tests and manage all your diving certifications by scanning and storing cards.

### What is the update frequency for Erebus?

The app was last updated on 2026-09-02 with version 1.0.3. While specific update frequency is not detailed, this indicates active development and maintenance.

## Version history (last 2 releases)

### 1.0.3 — 2026-09-02

Minor bug fixes

### 1.0.2 — 2026-08-02

No release notes.

## More apps by Leviathan Systems Ltd

- [Sovra: Private AI Second Brain](https://appshunter.io/ios/app/sovra-private-ai-second-brain/id6764045748)
- [TopUp (Fuel & Charging)](https://appshunter.io/ios/app/topup-fuel-and-charging/id6782972169)

All apps by Leviathan Systems Ltd: https://appshunter.io/developer/1895611456

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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 2026-09-14.*