Comparison

Z dive log vs Oceanus

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

Head to head
About

Z dive log

Easily manage your SCUBAPRO Z1 dive computer logs and settings. Download dive data via Bluetooth, add details like location and photos, and configure your dive computer's preferences.

Highlights
  • Download dive logs via Bluetooth
  • Enter and edit dive log details
  • Add photos to dive logs
  • View dive statistics at a glance
  • Configure Z1 dive computer settings
  • Save and share depth graph images
Read full description

With "Z dive log" and "SCUBAPRO Diving Computer Z1" you can enjoy diving log management and Z1 settings easily. You can download Z1's diving log data via Bluetooth and you can enter the diving point, weather etc on the smartphone. ● Download dive logs Tap the upper right "Download" button of Z dive log then set your Z1 to Bluetooth Mode "ON", Z dive log automatically start downloading dive logs. If the "Download button is not displayed, tap the "Dive Log" button at the bottom of the display. Downloaded logs are displayed in the Dive Log List and you can check log list by swiping. On the Dive Log List screen, you can check the total dive times, total dive time, maximum water depth and maximum dive time etc at a glance, and you can tap each log to see the details. - List of Z1 log items that can be downloaded by Z dive log Date Start time End time Depth Graph* Max. Depth Avg. Depth Max. Depth Temp O2 Indicator N2 Indicator Warnings * Depth graph is created automatically. ● Checking, entering, and correcting dive log details You can enter the log details when you tap each log from Dive Log List. You can fill in the same way as the paper log book, such as Location, Spot, photos, tanks, exposure protection, sea condition, buddy/instructor and comments. If you attach a photo, the photo will be displayed on the Dive Log List screen and you can enjoy a colorful logbook. You can put 3 photos, main photo, instructor photo and buddy photo in one log. - List of items that can be input / modified in Z dive log Location Location Spot Entry Dive Log Date Start time End time Depth Graph Max. Depth Avg. Depth Min Temp O2 Indicator N2 Indicator Warnings Photo Tank Tank Material Gas Tank Capacity Start Pressure End Pressure Exposure Protection Suit Glove Boot Hood Inner Weight Sea Condition Weather Temperature Surface Temperature Bottom Temperature Visibility Wave Height Current Surge Wind Direction Wind Speed Buddy/Instructor Instructor Instructor No. Instructor Photo Buddy Buddy Photo Comments ● Saving the Depth Graph Image Tap the image of the depth graph on the log detail screen to save the depth graph image. You can upload the saved image to SNS or check on the PC. ●Tap the "Z1 Setting Change" tab at the bottom of the screen. On the Z1 Setting Change screen, you can set Basic Configuration, Dive Setting, Alarm Setting, Timer Setting, Configuring Time and Date Settings and World Time. You can change the Z1 settings from Z dive log. Tap the "Reading" button at the top right of the screen and tap the CONNECT button. Set your Z1 to Bluetooth Mode and press PLAN button once to change Bluetooth state "ON". Starts connection and reads the Z1 settings. After reading, you can change Z1 settings from Z dive log. Change the item you want to change and tap the "Writing" button and set your Z1 to Bluetooth Mode "ON", the Z1 settings are changed. -Z dive log Setting · Support menu list App Settings App color scheme Restore deleted Dive Log Items of Log display Tank Exposure Protection Sea Condition Buddy/Instructor Photo Unit Depth Temperature Pressure Volume Weight Log Data Export About Z dive log Web manual Introducing app to friends Write a review on the app store ● Export Log data CSV Choose the Export menu from the Settings / Support menu. A confirmation message will be displayed. Save the CSV data to the destination you want to save. You can check the saved CSV data on the PC.

About

Oceanus

Features
Read full description

Log the dive. Name what you saw. Keep both in one place. Oceanus is a scuba and freediving logbook with an AI marine species identifier built in. Record depth, time, tank and conditions — then point your camera at a fish and pin it to the dive it came from. THE LOGBOOK - Log by hand in under a minute: date and time, duration, max and average depth, location - Import straight from a .FIT file exported by a Garmin dive computer, depth profile included - Read the depth profile as a chart on the detail screen - Scuba and freediving are both first-class types - Conditions: salt, fresh or brackish water, water temperature, visibility from poor to excellent - Gear: suit from shorty through 3/5/7 mm wetsuit, semi-dry and drysuit; tank from aluminum 63 through steel 120, doubles and sidemount; start and end pressure - Free-text title and notes on every entry - Link the species you identified to the dive they belong to - Everything syncs to your account and follows you to any device you sign in on AI SPECIES IDENTIFICATION - Point the camera at a fish, shark, ray or invertebrate and get an identification back - Species profiles with scientific name, depth range, geographic regions, danger level and conservation status - Browse the catalog by category: fish, sharks, rays, mammals, reptiles, mollusks, crustaceans, cnidarians - Save any species to favorites - Everything you identify joins your personal collection DIVERS, NOT JUST DIVES - Find divers by nickname, follow them, and watch their diving arrive in the Friends feed - Like the ones you enjoyed - 34 achievements, from your first identification to a full-category sweep - A global leaderboard scored on Ocean Score, recalculated nightly: species x10, identifications x2, achievements x25, streak x5 - A certification wallet for your scuba, freediving, specialty and first-aid cards. Medical entries stay private and are never published. - Share an entry as a sticker sized for Instagram Stories PREMIUM Premium unlocks AI Dive Story: turn a photo from a diving trip into a cinematic underwater scene. A monthly generation limit applies and is shown in the app. WHO IT IS FOR Recreational scuba divers who want the logbook on their phone instead of in a soggy paper book. Freedivers. Snorkelers. Anyone who surfaces with a photo of a fish and no idea what it was. Available in English, Spanish, Portuguese, Italian, Polish, Russian and Ukrainian. Oceanus does not replace your dive computer and is not a dive planner. It does not calculate decompression or no-stop limits. Always dive within your training and follow your computer.

Screenshots

Z dive log4 screens
Oceanus4 screens

Verdict

The call

The clearest difference is in-app purchases: Z dive log at none against Oceanus's 2. Z dive log also leads on ads (none vs shown). Oceanus's advantage is update cadence (every 5 days vs every 4 months). On price, device support and iOS requirement 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. Oceanus sells 2 in-app purchases, starting at $3.99 per month. Z dive log asks for nothing beyond the download.

UpkeepUpdate frequency

Z dive log ships an update every 4 months, Oceanus every 5 days. The most recent releases landed on November 2, 2026 and November 10, 2026 respectively.

Scorecard3 real differences · 7 level
Z dive log versus Oceanus: the parameters behind the verdict, then further details
ParameterZ dive logOceanus
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews58.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 4 monthsEvery 5 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size40 MB55 MB
Age rating4+4+
DeveloperSCUBAPRO ASIA LTD.Mikhail Listratsenka

In-app purchases

None

Z dive log

No in-app purchases

2 purchases

Oceanus

Subscriptions2
  • Premium Monthly$3.991 Month
  • Premium Yearly3 Days trial$29.991 Year

Questions

Is Z dive log free?
Z dive log is free to download, with no in-app purchases.
Is Oceanus free?
Oceanus is free to download, with in-app purchases available.
Do Z dive log or Oceanus have ads?
Oceanus shows ads; Z dive log does not.
Which is updated more often, Z dive log or Oceanus?
Z dive log ships an update every 4 months, and Oceanus every 5 days. Most recently, Z dive log was updated on November 2, 2026 and Oceanus on November 10, 2026.

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