Comparison

Diving logbook vs Subsurface

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

Head to head
About

Diving logbook

Easily record your scuba dives with an unlimited logbook. Track dive sites, conditions, equipment, and personal notes. Connect with dive partners and view comprehensive statistics.

Highlights
  • Unlimited dive entries
  • Extensive dive site database
  • Detailed dive condition logging
  • Equipment and gas tracking
  • Dive partner confirmation
  • Comprehensive dive statistics
  • User-added dive sites
Features
Read full description

Our mobile logbook is the easiest way to keep a dive log! The number of entries in the logbook is unlimited. Keeping a personal dive log is recommended in all scuba diving associations. You can choose such parameters. ● Date and number of dive  The number of the first dive from which you decide to start logging  can always be changed in the settings of the mobile dive log. ● Place of immersion  You can choose a dive site from a map of dive sites, we have a large  base of dive sites and easy search on the map. Or add your own  thereby enlarging the general base of dive sites for other divers. The number of dive sites you visit is displayed in statistics on the main application screen. ● Dive conditions  Deep, on sunken objects, at night, during or in conditions  high mountains and others. ● Cylinders  Steel or aluminum, different volume of cylinders. amount  cylinders is not limited. ● Gases in cylinders  Air or nitrox of any percentage from 21% to 100% is suitable for  immersing in the technical mode. ● Amount of gas in cylinders  Remember the amount of gas at the beginning and end of the dive. ● Depth of dive  It is selected simply by scrolling the screen down. ● Time spent under water  All the time is summed up and displayed on the main screen as statistics  total time spent by you under water. By the end of the vacation, this  it's funny. )) ● Ballast  The amount of cargo that you use in salt or fresh water when immersed. It is very important to remember your ballast for comfortable dive especially after a long break. ● Water temperature  The temperature at the surface and at the depth is chosen to be simple  scrolling. ● Visibility under water  You will like this screen with animation. ● Costume  Dry, wet, short, or completely without it. ● Notes  Be sure to write down your impressions right after diving so memories will be the brightest. Indicate who or what you met under These data on the fish or marine. They are processed for the statistics of the halo of various marine species. ● Body partner  The most important part of your dive is the partner you are with  immersed. The application allows you to select the body partner from the list users of the application or friends of facebook. Choosing body partner you confirm the dive. It's like a stamp or a signature in your paper logbook. All these parameters are selected very easily in one two-touch and does not require a long input from the keyboard. After all, as we said this is the easiest mobile logbook! We are glad that now you are with us. We are waiting for feedback in the itunes store. Successful and interesting dives! Privacy Policy https://www.freeprivacypolicy.com/privacy/view/2514ee890daaa2fe15999a7010f55e73 Terms of Use https://www.websitepolicies.com/policies/view/MDfU1sJ6

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.

Screenshots

Diving logbook4 screens
Subsurface4 screens

Verdict

The call

The clearest difference is in-app purchases: Subsurface at none against Diving logbook's 3. Subsurface also leads on rating (4.5 vs 4.2). Diving logbook's advantage is review sentiment (76% vs 63%). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Diving logbook sells 3 in-app purchases, starting at $1.99 per month. Subsurface asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Subsurface holds the better App Store score, 4.5 against 4.2. Both are backed by a comparable volume of ratings — 96 and 48 respectively. Written reviews complicate that: 76% of Diving logbook's written reviews are positive against 63% of Subsurface's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 30, 2026 and September 27, 2026 respectively.

Scorecard4 real differences · 6 level
Diving logbook versus Subsurface: the parameters behind the verdict, then further details
ParameterDiving logbookSubsurface
PriceFreeFree
Rating4.2 (96 ratings)4.5 (48 ratings) — better
Positive reviews76.1% of reviews — better63.3% of reviews
Number of ratings96 — better48
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.617 — better
Further details — not scored
Size71 MB52 MB
Age rating4+4+
DeveloperDenys DykushaDirk Hohndel

Customer experience

Diving logbook

All ratings96 ratings
Positive78.1%
Neutral10.4%
Negative11.5%
Written reviews67 reviews
Positive76.1%
Neutral10.4%
Negative13.4%

Subsurface

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

In-app purchases

3 purchases

Diving logbook

Subscriptions2
  • support DiveNumber every month$1.991 Month
  • support DiveNumber every year$1.991 Year
One-time1
  • support Dive Number one time$4.99
None

Subsurface

No in-app purchases

Questions

Is Diving logbook free?
Diving logbook is free to download, with in-app purchases available.
Is Subsurface free?
Subsurface is free to download, with no in-app purchases.
Which has better reviews, Diving logbook or Subsurface?
Subsurface is rated higher. Diving logbook averages 4.2 out of 5 from 96 ratings, while Subsurface averages 4.5 from 48 ratings.
Do Diving logbook or Subsurface have ads?
Neither Diving logbook nor Subsurface shows ads.
Which is updated more often, Diving logbook or Subsurface?
Diving logbook ships an update every 2 months, and Subsurface every 2 months. Most recently, Diving logbook was updated on September 30, 2026 and Subsurface on September 27, 2026.

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