Comparison

Poseidon Reef vs Currents

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Poseidon Reef

This app helps divers log, plan, and analyze their dives. It offers detailed overviews, customizable dive logs, and advanced planning for various dive types. Connect your dive computer to manage data and firmware.

Highlights
  • Comprehensive dive logging
  • Detailed dive planning
  • Support for OC and CCR dives
  • Unlimited tank support
  • Decompression model selection
  • Dive computer connectivity
  • Cloud backup and firmware updates
Read full description

Dive into the deep with Reef, the ultimate tool for every diver regardless of experience, level, or dive style. Designed to enhance and prolong your passion for diving, Reef seamlessly extends your diving experience, both before and after the actual dive. With Reef in your pocket, you're always ready to explore. Dive Log > Get a comprehensive and detailed overview of all your dives. > Easily sort and filter to find specific dives. > Import and export dives effortlessly. > Personalize dives with custom details, photos, location and more. > Engage with your dives using the interactive chart functionality. > Visualize intricate data like tank pressures, pO2, loop temperature, etc.* > Choose the data points you want to see > Zoom in on portions of the dive you are interested in Planner > Keep track of all your upcoming dives with a comprehensive overview. > Sort, filter, and organize your dive plans. > Plan for a single dive or a series of dives. > Suitable for OC (Open Circuit) and CCR (Closed Circuit Rebreather) dives. > Supports an unlimited number of tanks. > Choose between DCAP and Buhlmann decompression models. > Bailout scenario > Configure gas content Device Manager > Connect your Poseidon M28 dive computer through WiFi > View details about connected submodules. > Download, store, and back up your dives in the cloud. > Access vital service information > Monitor total dive time > Stay updated with firmware information. *Only available with Poseidon M28 dive computer

About

Currents

Log your dives effortlessly with automatic syncing from popular dive computers or quick manual entry. Discover over 5,000 dive sites and verified shops, and connect with a community for real-time safety alerts and shared experiences. Keep your certifications handy and manage gear maintenance with this comprehensive diving companion.

Highlights
  • Automatic dive computer syncing
  • Quick manual dive logging
  • Dive site and shop discovery
  • Community alerts and sharing
  • Digital certification storage
  • Gear maintenance tracking
Features
Read full description

Effortless Dive Logging for Passionate Divers Designed for divers who go below the surface more than 10 times a year, from weekend quarry dives to deep trips in the Maldives. Log faster, plan smarter, and keep your dive details and training ready wherever you dive. 1. Simplified Dive Logging - Log a dive in under 30 seconds by entering depth, site, and dive partners. - Import dive files in UDDF, Subsurface XML, or FIT format from your dive computer software or other logging apps. - Back up your logs with UDDF export, a universal format supported by most dive-logging software. 2. Reliable Dive Site and Shop Discovery - Explore 10,000+ dive sites. - Find dives by type, entry point, and skill level. 3. Save Your Favorites - Bookmark must-visit sites like Silfra Fissure and the dive shops divers trust, so your next trip takes less time to plan. 4. Real Reviews from Real Divers - Rate sites and dive shops, leave reviews, and read what other divers say, from Cozumel to local favorites. 5. Streamline Your Dive Management - Keep certifications accessible: store your PADI, SSI, or NAUI cards digitally for offline access, even on remote liveaboard trips. - Track your trends: review maximum depth, SAC rate, and dive counts over 1 month, 6 months, 1 year, or all time. - See your stats at a glance: add the No-Fly and Dive Stats widgets to your Home or Lock Screen, no need to open the app. Upgrade to Pro for more - Wireless dive computer sync: Shearwater, ScubaPro, Suunto, and 15+ other dive computers. No cables, no manual typing. Check compatibility at trycurrents.app/compatibility. - Live sync progress: watch dive computer downloads update live on your Lock Screen or Dynamic Island. - Comprehensive dive logs exports: Export in CSV and PDF. - Gear kits and service history: Track each piece of gear, create kits, and get reminders for upcoming servicing. - Dive tools: Nitrox MOD Calculator, Nitrox Best Mix Calculator, Weight Calculator, and Unit Conversion, based on your dive logs and established formulas. Learn more: Terms of Service: https://www.trycurrents.app/terms-of-service Privacy Policy: https://www.trycurrents.app/privacy-policy

Screenshots

Poseidon Reef4 screens
Currents4 screens

Verdict

The call

The clearest difference is review sentiment: Currents at 75% against Poseidon Reef's 0%. Currents also leads on rating (4.2 vs 3.0) and ads (none vs shown). Poseidon Reef's advantage is in-app purchases (none vs 3) and device support (4 vs 1). On price and ratings volume there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Currents sells 3 in-app purchases, starting at $2.99 per month. Poseidon Reef asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Currents holds the better App Store score, 4.2 against 3.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 0% of Poseidon Reef's written reviews are positive against 75% of Currents's.

UpkeepUpdate frequency

Poseidon Reef ships an update every 5 weeks, Currents every 5 days. The most recent releases landed on June 2, 2026 and September 23, 2026 respectively.

Scorecard8 real differences · 2 level
Poseidon Reef versus Currents: the parameters behind the verdict, then further details
ParameterPoseidon ReefCurrents
PriceFreeFree
Rating3.0 (2 ratings)4.2 (5 ratings) — better
Positive reviews0.0% of reviews75.0% of reviews — better
Number of ratings25 — better
Update frequencyEvery 5 weeksEvery 5 days — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFreemium
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS12.1 — better26.1
Further details — not scored
Size58 MB200 MB
Age rating4+4+
DeveloperPoseidon Diving Systems ABLatisha Besariani Hendra

Customer experience

Poseidon Reef

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Currents

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

In-app purchases

None

Poseidon Reef

No in-app purchases

3 purchases

Currents

Subscriptions2
  • DiverPlus PRO Monthly$2.991 Month
  • DiverPlus PRO Yearly7 Days trial$19.991 Year
One-time1
  • Lifetime Access$29.99

Questions

Is Poseidon Reef free?
Poseidon Reef is free to download, with no in-app purchases.
Is Currents free?
Currents is free to download, with in-app purchases available.
Which has better reviews, Poseidon Reef or Currents?
Currents is rated higher. Poseidon Reef averages 3.0 out of 5 from 2 ratings, while Currents averages 4.2 from 5 ratings.
Do Poseidon Reef or Currents have ads?
Poseidon Reef shows ads; Currents does not.
Which is updated more often, Poseidon Reef or Currents?
Poseidon Reef ships an update every 5 weeks, and Currents every 5 days. Most recently, Poseidon Reef was updated on June 2, 2026 and Currents on September 23, 2026.

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