Subsurface vs Currents
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subsurface
This application allows divers to manage their dive logs on their mobile devices. It supports editing dive data and downloading new information from compatible dive computers. Optional cloud synchronization is available for seamless data transfer with desktop versions.
- Mobile dive log management
- Edit dive data
- Download from Bluetooth LE dive computers
- Optional cloud synchronization
- Open-source and free
Read full descriptionHide full description
Subsurface-mobile is an iOS dive log application based on Subsurface, the best free open source dive log application available on Windows, Mac and Linux. Subsurface-mobile allows you to access your dive log on your tablet or phone, edit the data and even download new dive information from many Bluetooth LE enabled dive computers. Using a free Subsurface Cloud Storage account you can synchronize your dive data with the Subsurface desktop application (while significantly increasing the usefulness, the cloud account is not required to use Subsurface-mobile). To get support from the developers, please use the in-app menu entry "Ask for support" Please check out the Subsurface-mobile user manual: https://subsurface-divelog.org/documentation/subsurface-mobile-v3-user-manual (also available from within the app) Subsurface-mobile is free and open source. No ads, no commercial anything. And it comes with free cloud storage (if you decide to use that - it's optional). Your data aren't used for anything, nothing gets monetized.
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.
- Automatic dive computer syncing
- Quick manual dive logging
- Dive site and shop discovery
- Community alerts and sharing
- Digital certification storage
- Gear maintenance tracking
Read full descriptionHide 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
Verdict
The clearest difference is in-app purchases: Subsurface at none against Currents's 3. Subsurface also leads on rating (4.5 vs 4.2) and ratings volume (48 vs 5). Currents's advantage is update cadence (every 5 days vs every 2 months) and review sentiment (75% vs 63%). On price, ads and device support 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
Both are free to download. Currents sells 3 in-app purchases, starting at $2.99 per month. Subsurface asks for nothing beyond the download.
Subsurface holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Subsurface has 48 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 63% of Subsurface's written reviews are positive against 75% of Currents's, so the app with the better star average is not the one people write more warmly about.
Subsurface ships an update every 2 months, Currents every 5 days. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.
| Parameter | Subsurface | Currents |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (48 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 63.3% of reviews | 75.0% of reviews — better |
| Number of ratings | 48 — better | 5 |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17 — better | 26.1 |
| Further details — not scored | ||
| Size | 52 MB | 200 MB |
| Age rating | 4+ | 4+ |
| Developer | Dirk Hohndel | Latisha Besariani Hendra |
Customer experience
Subsurface
Currents
In-app purchases
Subsurface
No in-app purchases
Currents
- DiverPlus PRO Monthly$2.991 Month
- DiverPlus PRO Yearly7 Days trial$19.991 Year
- Lifetime Access$29.99
