Diving Log vs Mares App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diving Log
This app serves as a customizable digital logbook for scuba divers. It allows users to record detailed dive information, including depth, time, location, and environmental conditions. Users can also add photos, instructor signatures, and export logs for social sharing.
- Customizable dive logbook
- Record dive details (depth, time, temp)
- Map dive point locations
- Add photos and instructor signatures
- Export logs to social media
- Graph display of depth intervals
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TUSA Diving LOG is a diving logbook app, which enables you to upload log data from TUSA IQ1204 DC Solar Link to your smartphone using Bluetooth® SMART. The TUSA Diving LOG App has many customizable functions to record the details of your dive. Information such as entry time, exit time, dive time, maximum water depth, average water depth, water temperature, air consumption, and much more can be recorded. Customize your dive log by recording dive point locations using maps, add photos, and capture signatures from an instructor. In addition, detailed water depth and warning information can be recorded at intervals, and uploaded to your app. Also you can easily export dive log information as images to share on Facebook, Twitter, or other social media. TUSA Diving LOG can be used independently of TUSA IQ1204 DC Solar link to record basic log information. --TUSA Diving LOG-- • Featuring: - Customizable scuba diving log book (create, edit, and browse log history) - Graph display of depth intervals - Record dive point locations using maps - Export log information as an image to share on social media - Dive instructor verification signature - Ability to toggle ON/OFF all menu display items • Information Recording: - Maximum Water Depth (including graph display and current time) - Average Water Depth - Total Bottom Time (including Entry and Exit Time) - Date - Location - Dive Points (Map Display) - Entry Point (Boat or Beach) - Residual Pressure Start and End Time - Air Consumption - Weather - Wave Height - Current - Wind - Water Temperature - Lowest Water Temperature - Visibility - Gas Type - Cylinder Type & Volume - Safety Factors: N2 & O2 Indicators - Ascent Rate Warning - Decompression Dive Warning - Decompression Depth Warning - PO2 warning - O2 warning - Maximum Depth Alarm - M Value Warning - Weight - Instructors Name - Instructor Verification Signature - Buddy Name - Memo • Creating a New Dive Log with TUSA Diving LOG App - Press the “New Log” button on the home screen to create your new dive log. • How to Pair TUSA IQ1204 DC Solar Link with DiveLog App - When you create a new dive, first press the blue “Link with DC Solar” button on top in order to pair your TUSA IQ1204 DC Solar Link. Press the “Start Search” button displayed at the bottom of the screen. Make sure to follow all instructions on the screen in order to successfully upload your dive log information in the Diving LOG app.
Mares App
Transform your Apple Watch Ultra into a dive computer, recording dives directly on your wrist. Log scuba, freediving, and technical dives, manage dive sites, and track underwater wildlife sightings. Share your adventures with dive buddies and keep your equipment details organized.
- Apple Watch Ultra dive computer integration
- Digital dive logbook
- Dive site database and management
- Underwater wildlife tracking
- Dive buddy sharing
- Dive equipment management
- Firmware updates
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APPLE WATCH ULTRA DIVE COMPUTER Transform your Ultra into a dive computer. Record dives directly on your wrist and sync automatically to the Mares App. (In-app purchase required.) DIGITAL LOGBOOK: Log your Scuba, Freediving, Extended Range and Rebreather (SCR/CCR) dives in seconds via Bluetooth. Easily share your dives via QR code. Add new dives with your device’s GPS and download your dives from selected dive computers (1*). DIVE SITES: With the help of the Mares dive site database, you can immediately assign a dive site to your logged dives. You can also add your own private dive sites and share them with your dive buddies using a QR code. You can download your dive data directly from selected Mares dive computers . WILDLIFE: A variety of local wildlife is already stored in the app for individual dive sites. This means you can immediately assign the highlights of your underwater encounters to your logged dives. Your sightings are displayed on your personal world map. DIVE BUDDIES: Easily add your dive buddies via QR code or manually in the app. Share your best dives and most exciting animal encounters with friends using the Mares app. STATISTICS: All your dives and data can be seen at a glance, including your longest or deepest dive, your average dive time and more! DIGITAL EQUIPMENT: Store important dive equipment details, including serial numbers, photos and invoices. Enter maintenance dates and keep track of when your equipment needs to be serviced. NEWS AND VIDEOS: Stay up-to-date with all the latest news and videos from the world of water sports and diving. FIRMWARE: When you connect your dive computer to the app, you will be able to confirm if you have the latest firmware. As soon as it is outdated, you will receive a message regarding the newest firmware to download. TABLES: Here you will find useful information such as decompression tables and emergency scenarios. 1* Currently available for MARES Sirius, Sirius L, Sirius Hunter, Horizon, Genius, Quad CI, Quad 2, Quad Air, Quad, Puck 4, Puck Pro EZ, Puck lite, Puck Pro, Puck Pro Plus, Puck Air 2, Smart, Smart Apnea, Smart Air Terms of Use (EULA) Mares App for Apple Watch Ultra: https://my.divessi.com/published/viewhls/awu_terms_v1/2
Screenshots
Verdict
The clearest difference is rating: Mares App at 4.5 against Diving Log's 2.0. Mares App also leads on update cadence (every 3 weeks vs every 9 months) and ratings volume (183 vs 3). Diving Log's advantage is in-app purchases (none vs 8). On price, review sentiment, 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. Mares App sells 8 in-app purchases, starting at $2.99 per month. Diving Log asks for nothing beyond the download.
Mares App holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: Mares App has 183 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 50% of Diving Log's written reviews are positive against 47% of Mares App's, so the app with the better star average is not the one people write more warmly about.
Diving Log ships an update every 9 months, Mares App every 3 weeks. Both last shipped on September 21, 2026.
| Parameter | Diving Log | Mares App |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (3 ratings) | 4.5 (183 ratings) — better |
| Positive reviews | 50.0% of reviews — better | 47.5% of reviews |
| Number of ratings | 3 | 183 — better |
| Update frequency | Every 9 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 22 MB | 247 MB |
| Age rating | 4+ | 4+ |
| Developer | TABATA CO.,LTD. | Head Watersports S.p.A. |
Customer experience
Diving Log
Mares App
In-app purchases
Diving Log
No in-app purchases
Mares App
- Snorkel Only$2.991 Month
- Full Featured Month (Housing Only)3 Days trial$6.991 Month
- Full Featured Month (Ultra Only)3 Days trial$6.991 Month
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- MARES Fully Featured Monthly3 Days trial$8.991 Month
- Full Featured Yearly (Housing Only)3 Days trial$49.991 Year
- Full Featured Yearly (Ultra Only)3 Days trial$49.991 Year
- MARES Fully Featured Yearly3 Days trial$69.991 Year
- MARES Fully Featured Yearly Family3 Days trial$119.991 Year
Questions
Is Diving Log free?
Is Mares App free?
Which has better reviews, Diving Log or Mares App?
Do Diving Log or Mares App have ads?
Which is updated more often, Diving Log or Mares App?
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