Subsurface vs DiverLog+
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
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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.
DiverLog+
This app allows divers to digitally log and manage all aspects of their underwater adventures. Track dive details, gear, buddies, and locations. Sync data with dive computers and cloud backups, and share your experiences.
- Manage dive details
- Search dives by location/buddy
- Manage dive spots and gear
- Track personal medical/certification info
- Add photos and videos
- Sync with desktop/cloud
- Download/upload dive computer data
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The DiverLog+ for mobile app is the premier full-featured dive log application. DiverLog+ is the Official App for Bluetooth Smart dive computers made by the following manufacturers: AQUALUNG, APEKS, HUISH/OCEANIC, SHERWOOD. FEATURES - View, edit, and manage your DC dive detail data - Search dives based on location, dive type, buddies, many more - View, edit and manage your favorite dive spots and locations - View, edit and manage your dive gear, buddies - Keep track of personal data including medical and certification information - Upload slates, MY INFO, GPS Location to Dive Computer (DSX only) - Add photos, Youtube video links to dives, and remember those fun times - Social sharing features - Synchronize with DiverLog application for desktop, laptop, and mobiles devices - Download dive data from Dive Computer, upload your desired settings to Dive Computer, update firmware to Dive Computer using Bluetooth Smart (currently supports BEACON, CALM-ACT, DSX, i200C, i300C, i330R, i330R Console, i470TC, i550C, i750TC, i770R, GEO 4.0, GEO AIR, PROPLUS 4.0, PROPLUS X, SAGE, VEO 4.0, WISDOM 4.0) - Much more ... SUMMARY DiverLog+ allows you to view, edit, and manage your dives easily. The dive detail section gives you all the information you need, including dive data, location and dive site information, tank and buddy information, gear bag, and more. Add your diving buddies and keep your personal certification and medical information on hand at all times. View your dive profile in full screen view. Add and manage your gear with easy entry forms. DiverLog+ offers you simple search methods to find your dives .. search by location, dive site, and even which computer you used! ...See all your dives on the world map, a unique feature we call your dive activity map! You can even keep track of your personal information, including medical and certification info. You can now sync your dives with the DiveCloud online dive data backup system so you never lose your dives, and always have them available, wherever you are! Connect with our developers by posting in the forum, or contact by email at the support website: https://ediverlog.com
Screenshots
Verdict
The clearest difference is review sentiment: Subsurface at 63% against DiverLog+'s 19%. Subsurface also leads on rating (4.5 vs 2.5) and monetization model (free vs freemium). DiverLog+'s advantage is iOS requirement (9.0 vs 17). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.
Subsurface holds the better App Store score, 4.5 against 2.5. Both are backed by a comparable volume of ratings — 48 and 111 respectively. Written reviews point the same way: 63% of Subsurface's written reviews are positive against 19% of DiverLog+'s.
Subsurface ships an update every 2 months, DiverLog+ every 5 weeks. The most recent releases landed on September 18, 2026 and September 4, 2026 respectively.
| Parameter | Subsurface | DiverLog+ |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (48 ratings) — better | 2.5 (111 ratings) |
| Positive reviews | 63.3% of reviews — better | 19.1% of reviews |
| Number of ratings | 48 | 111 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17 | 9.0 — better |
| Further details — not scored | ||
| Size | 52 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Dirk Hohndel | Head Watersports S.p.A. |
Customer experience
Subsurface
DiverLog+
Bugs and requests
Subsurface
Not enough reviews yet to summarise bugs or requests.
DiverLog+
Reported bugs
28 issues- App crashes when downloading/syncing dives
- Crashes during firmware updates
- Crashes when accessing settings or verification
- All dive data lost after app reinstall
- Data loss when switching phones
Show 23 moreShow fewer
- Bluetooth connection failures
- Firmware update stuck at 99%
- Incorrect elapsed dive time calculations
- Download timeouts around 50%
- GPS coordinates disappear after naming dive site
- Tank pressure not auto-populated from wireless transmitter
- Dive computer not recognized after updates
- Sync failures with dive cloud
- Cannot add photos or videos
- Incomplete label text in log lists
- Time synchronization not working
- Settings revert to English/Anglo-Saxon format
- Cannot update GPS locations for dive sites
- Dive data shows incorrect tanks and mixes
- Map displays wrong locations (e.g., Antarctica instead of Galapagos)
- Keyboard input issues on iPad
- App crashes on specific iPhone models
- Network errors on login
- Cannot edit personal information (blood type, insurance)
- Graph display showing blank/white after updates
- Account creation confusion
- Password reset not working
- Dives disappear after login
Requested features
20 requests- Cloud backup and sync across devices
- iPad-optimized version with landscape mode
- Cumulative dive time and average RMV statistics
- Average depth per dive display
- Merge/combine multiple dives into one
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- Export to Excel or other formats
- Ability to re-download deleted dives
- Edit and delete dive locations easily
- Back buttons in data entry forms
- Photo thumbnails in dive log list
- Safety stop indication during dives
- Heart rate tracking integration
- Ability to split dives recorded as one
- Search by depth ranges (greater than/less than)
- Multi-location search capability
- Separate logs for scuba vs freediving
- Battery indicator for dive computer
- Customizable gear bag items
- Manual GPS coordinate input and editing
- Offline mode capability
In-app purchases
Subsurface
No in-app purchases
DiverLog+
No in-app purchases









