Comparison

Subsurface vs Dyvo

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

Head to head
About

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.

Highlights
  • Mobile dive log management
  • Edit dive data
  • Download from Bluetooth LE dive computers
  • Optional cloud synchronization
  • Open-source and free
Read 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.

About

Dyvo

This app visualizes your dive history on an interactive globe, allowing you to log detailed dive information, track personal statistics, and privately share experiences with dive buddies. It offers offline access and Siri integration for convenience.

Highlights
  • Global dive site visualization
  • Detailed dive logging
  • Personal dive statistics dashboard
  • Private dive buddy sharing
  • Offline access to shared dives
  • Siri and Shortcuts integration
Features
Read full description

Dyvo is a dive logbook that treats your dives the way you remember them — not rows in a spreadsheet, but places on a globe. EVERY DIVE ON THE GLOBE See your whole diving life on a beautiful satellite globe. Every site you've splashed gets a pin — spin the earth to relive past trips, and drop pins for the dives you're planning next. A LOGBOOK BUILT FOR DIVERS Capture everything that matters in seconds: max and average depth, bottom time, water and air temperature, visibility, current, surface conditions, gas mix (air, nitrox, or trimix), tank size and pressures, suit and weight, boat or shore entry, operator, buddy, and the marine life you spotted. Add photos and notes so every dive is a story, not just a stat. BRING THE LOGBOOK YOU ALREADY HAVE Import UDDF from Shearwater Cloud, Subsurface, Diving Log and more, or pull underwater workouts from Apple Health if you dive an Apple Watch. Imported dives keep their full depth profile chart. PLAN THE NEXT ONE Pin a future dive and Dyvo forecasts the site: a divability score from swell, period, wind, current and rain; slack windows and current set from NOAA stations; tides; sunrise and sunset in the site's own time zone; estimated visibility from five days of weather. Marine warnings are free for everyone, on every dive, always. BADGES THAT KNOW YOUR HISTORY 60 badges across depth, gas, conditions, marine life, travel and habit, judged against your whole logbook — an import awards everything you already earned, each pinned to the dive that unlocked it. Spin the medal in 3D and read the engraved back. YOUR DIVING, BY THE NUMBERS A dashboard that turns your logbook into milestones: dive count, time underwater, depth records, SAC rate, depth trends, marine life and the regions you've explored. Close out any year with a Year in Review card from your photos. Metric or imperial, your choice. GEAR AND C-CARDS Track your kit with serials, purchase dates and service intervals, and the dives on that reg since its last service. Certification cards store scans of both sides and open offline — the only way that's useful at a shop counter. DIVE BUDDIES, NOT FOLLOWERS Dyvo has no public feed, no follower counts, and no user search. You connect by sharing a personal invite link with people you actually dive with, and choose exactly which dives to share. Shared dives travel through iCloud's private sharing — visible to your buddies and no one else. Log the same dive as a buddy? Link the two and read both logs together. PRIVATE BY DESIGN Sign in with Apple. Your logbook syncs through your personal iCloud, and your photos are stored in full inside it — never shuffled off to someone else's server. No ads. No tracking. ALWAYS WITH YOU • Home Screen widget with your logbook at a glance • Live Activity dive timer on the Lock Screen and Dynamic Island • Siri & Shortcuts — log a dive or ask for your stats hands-free • Buddies' shared dives cached on device, readable offline between dives DYVO PRO Free forever: unlimited dives, certification cards, all 60 badges, CSV export, and marine warnings. Pro adds the full forecast for every planned dive, unlimited import with depth profiles, every stat and range, 3D medals, clean Year in Review cards, 10 photos a dive, an unlimited gear locker and UDDF export. Nothing you created is ever locked if Pro lapses. From your first open water dive to number 1,000, Dyvo keeps every one of them close. Dive in. Dyvo Pro is an optional subscription with monthly and annual plans, plus a one-time lifetime unlock that doesn't renew. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the current period ends; manage or cancel any time in Settings › Apple Account › Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Dyvo Terms of Use: https://getdyvo.com/terms Privacy Policy: https://getdyvo.com/privacy

Screenshots

Subsurface4 screens
Dyvo4 screens

Verdict

The call

The clearest difference is review sentiment: Dyvo at 100% against Subsurface's 63%. Dyvo also leads on rating (4.9 vs 4.5) and update cadence (weekly vs every 2 months). Subsurface's advantage is ratings volume (48 vs 11). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Dyvo holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 48 and 11 respectively. Written reviews point the same way: 63% of Subsurface's written reviews are positive against 100% of Dyvo's.

UpkeepUpdate frequency

Subsurface ships an update every 2 months, Dyvo weekly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Subsurface versus Dyvo: the parameters behind the verdict, then further details
ParameterSubsurfaceDyvo
PriceFreeFree
Rating4.5 (48 ratings)4.9 (11 ratings) — better
Positive reviews63.3% of reviews100.0% of reviews — better
Number of ratings48 — better11
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS17 — better18.0
Further details — not scored
Size52 MB24 MB
Age rating4+4+
DeveloperDirk HohndelGrant Swingler

Customer experience

Subsurface

All ratings48 ratings
Positive89.6%
Neutral2.1%
Negative8.3%
Written reviews30 reviews
Positive63.3%
Neutral6.7%
Negative30.0%

Dyvo

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Subsurface

No in-app purchases

None

Dyvo

No in-app purchases

Questions

Is Subsurface free?
Subsurface is free to download, with no in-app purchases.
Is Dyvo free?
Dyvo is free to download, with no in-app purchases.
Which has better reviews, Subsurface or Dyvo?
Dyvo is rated higher. Subsurface averages 4.5 out of 5 from 48 ratings, while Dyvo averages 4.9 from 11 ratings.
Do Subsurface or Dyvo have ads?
Neither Subsurface nor Dyvo shows ads.
Which is updated more often, Subsurface or Dyvo?
Subsurface ships an update every 2 months, and Dyvo weekly. Most recently, Subsurface was updated on October 22, 2026 and Dyvo on October 24, 2026.

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