Comparison

Dive Log vs Halcyon Dive Systems

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

Head to head
About

Dive Log

Log your SCUBA dives with detailed information, including GPS coordinates and dive buddy details. Supports metric and imperial units, and integrates with desktop software for comprehensive dive history management.

Highlights
  • SCUBA diving logbook
  • GPS coordinate capture
  • Dive buddy integration
  • Dive data and statistics
  • Metric and Imperial units
  • Dive computer data import
  • Bluetooth LE transfer
Features
Currently charting
Read full description

Dive Log is designed to work either as your primary SCUBA diving logbook application or in conjunction with compatible 3rd party desktop logbook applications. You can use Dive Log at the dive site or on the dive boat to capture the information about the site while it is fresh in your mind (or your dive guide's mind). You can even capture the GPS coordinates of the dive site using the built in location services of your iOS device. Details about your actual dive can be added immediately after your dive or at the après dive event and later be saved to your desktop computer. The dive buddy feature is fully integrated with Contacts on your iPhone or iPad, letting you capture information about your newest dive buddy or quickly add an existing buddy to a particular dive. The dive data and statistics features let you have an immediate answer the next time your dive guide asks how much weight you used on your last dive or have all the information you need about your dive history when you fill out that next dive waiver. Metric and Imperial values are supported for all appropriate logbook fields. You can easily enter values using the appropriate units for the situation and view them in your preferred measurement system. You can even explore detailed dive profiles from popular dive computers that you download with your desktop software and later upload to Dive Log on iPhone/iPad. Dive profile data can also be transferred directly from certain dive computers directly via Bluetooth or using a supported Bluetooth accessory and an associated in-app purchase. On Windows, Diving Log 6.0 (www.divinglog.de) is fully integrated with Dive Log on iPhone/iPad and has built in synchronization. Diving Log 6.0 has extensive support for importing data from dive computers and other dive log applications. On Mac OS X, logbook information can be imported to Dive Log on iPhone/iPad from a number of compatible applications using the free Dive Log Manager application available from More Mobile Software (www.moremobilesoftware.com/divelog-sync). DiveLogDT (available on the Mac App Store) can be used to directly import a number of dive computers and file formats and can synchronize with Dive Log on iOS. Dive data can be directly downloaded on a Bluetooth LE (Bluetooth 4.0/5.0) compatible iPhone, iPad or iPod touch from Bluetooth LE capable dive computers such as the Suunto EON Steel, Suunto EON Core, Suunto D5, Scubapro Galileo 2 (G2), Aladin Sport (Matrix), Aladin H (Matrix), G2 HUD, Aladin A1, Shearwater Teric, Peregrine, Petrel 2, Petrel 3, Perdix, Perdix AI, Perdix 2, NERD 2, Oceanic VTX, Pro Plus 4, Geo 4.0, VEO 4.0, Aeris A300CS, Aqualung i300C, i330R, i550C, i750TC, i770R, Apeks DSX, Sherwood Wisdom 4, Mares Genius and certain heinrichs weikamp OSTC computers as well as the DiveNav Inc. bluebuddy and Tech Buddy dive logger accessories. Supported Bluetooth LE accessories are available separately. Mares Bluelink Pro is a Bluetooth LE accessory by Mares and available for purchase separately (www.mares.com). The Bluelink Pro allows you transfer dive data from certain Mares dive computers (Puck Pro, Smart, Smart Air, Quad and Quad Air) directly to Dive Log on your Bluetooth LE compatible iPhone, iPad or iPod touch. Dive Computer Buddy (aka DCbuddy) is a Bluetooth LE accessory by DiveNav Inc. (note that the DCbuddy itself is no longer available). The DCbuddy allows you transfer dive data from certain dive computers (including models from Suunto, Oceanic, Aqualung, Aeris, Sherwood, Tusa and Mares) directly to Dive Log on your Bluetooth LE compatible iPhone, iPad or iPod touch.

About

Halcyon Dive Systems

This app helps divers log, track, and share their underwater experiences. It offers integration with dive computers, personalized settings, and a community forum for connecting with other divers.

Highlights
  • Symbios integration for dive computer settings
  • Detailed dive logging and progress tracking
  • Social logbook for sharing dive stories
  • Connect with a global diving community
  • Personalized dive tips and advice
  • Exclusive benefits for Halcyon owners
Features
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Explore without limits: Your Ultimate Diving App Dive smarter and safer with the Halcyon App. Enjoy this powerful tool for logging, tracking, and sharing all your diving experiences while experiencing unprecedented integration with your Halcyon computer. With the Haclyon app you have full control over all computer settings, allowing the creation of profiles that include tailored settings and gases, pushed to the computer with the click of a button. You can also enjoy a full-featured "dry-diving" mode to explore all the unique features of our Symbios-connected products. From beginners to seasoned pros, the Halcyon App empowers you to explore the underwater world with confidence, share with our vibrant community, and track your diving progress. Key Features: Symbios Integration: Sync with Symbios-enabled devices, including the Handset, HUD, Rebreather and more. Manage your settings, create saved profiles with tailored settings and gases, track dive profiles, and access advanced metrics. Log Your Dives: Keep a detailed record of your dives. Monitor your progress over time and relive your diving adventures. Social Logbook: Share your dive stories, photos, and achievements with divers worldwide. Stay motivated and inspire others along the way. Diving Community: Connect with divers at any level. Share tips, discover new dive spots, and stay in the loop with the latest dive trends. Personalized Dive Tips: Get advice tailored to your diving experience with helpful tips and tricks, no matter your skill level. Halcyon Owner Benefits: Enjoy exclusive perks if you're a Halcyon owner—priority support, extended warranties, and special offers to get the most out of your gear. Why Choose Halcyon App? The Halcyon App isn’t just for logging and tracking—it’s your gateway to a richer diving experience. With cutting-edge technology, a thriving community, and personalized insights, the Halcyon App helps you dive smarter, stay connected, and explore like never before. Whether you're diving at a technical site or simply enjoying a recreational dive, the app ensures every dive is memorable, safe, and exciting. Stay Connected, Stay Inspired Join a passionate diving community where you can share experiences, connect with fellow divers, and keep up with the latest Halcyon innovations. The Future of Diving Is Here With Symbios Ecosystem integration, the Halcyon App lets you customize and track your gear, log dives, and connect with divers worldwide. Experience the underwater world with the latest tools, all from your phone. For Divers at Every Stage Whether you're just starting out or have hundreds of dives under your belt, the Halcyon App helps you track your dives, manage your gear, and stay in touch with the diving community. Download Halcyon App Today Join the next generation of divers—download Halcyon App and start exploring without limits.

Screenshots

Dive Log4 screens
Halcyon Dive Systems4 screens

Verdict

The call

The clearest difference is price: Halcyon Dive Systems at Free against Dive Log's $14.99. Halcyon Dive Systems also leads on in-app purchases (none vs 13) and rating (5.0 vs 4.7). Dive Log's advantage is ratings volume (106 vs 8) and chart position (#183 vs unranked). On 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

Halcyon Dive Systems is free to download; Dive Log costs $14.99 up front. Dive Log sells 11 one-off in-app purchases. Halcyon Dive Systems asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Halcyon Dive Systems holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Dive Log has 106 ratings behind it against 8, so its average is the more settled of the two.

UpkeepUpdate frequency

Dive Log ships an update monthly, Halcyon Dive Systems every 2 weeks. The most recent releases landed on September 23, 2026 and July 24, 2026 respectively.

Scorecard9 real differences · 2 level
Dive Log versus Halcyon Dive Systems: the parameters behind the verdict, then further details
ParameterDive LogHalcyon Dive Systems
Price$14.99Free — better
Rating4.7 (106 ratings)5.0 (8 ratings) — better
Positive reviews83.7% of reviews—
Number of ratings106 — better8
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
Best chart rank#183 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS14.0 — better16.0
Further details — not scored
Size33 MB159 MB
Age rating4+4+
DeveloperGreg MclaughlinHalcyon Dive Systems

Customer experience

Dive Log

All ratings106 ratings
Positive94.3%
Neutral2.8%
Negative2.8%
Written reviews301 reviews
Positive83.7%
Neutral6.6%
Negative9.6%

Halcyon Dive Systems

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

11 purchases

Dive Log

One-time11
  • Suunto Bluetooth Download$2.99
  • Mares Bluetooth Download$2.99
  • Crest Bluetooth Download$2.99
Show 8 more
  • Shearwater Download$2.99
  • bluebuddy Download$2.99
  • SCUBAPRO Download$2.99
  • Pelagic Bluetooth Download$2.99
  • Cressi Bluetooth Download$2.99
  • Ratio Bluetooth Download$2.99
  • Halcyon Bluetooth Download$2.99
  • DCbuddy Support$4.99
None

Halcyon Dive Systems

No in-app purchases

Questions

Is Dive Log free?
Dive Log costs $14.99, and also offers in-app purchases.
Is Halcyon Dive Systems free?
Halcyon Dive Systems is free to download, with no in-app purchases.
Which has better reviews, Dive Log or Halcyon Dive Systems?
Halcyon Dive Systems is rated higher. Dive Log averages 4.7 out of 5 from 106 ratings, while Halcyon Dive Systems averages 5.0 from 8 ratings.
Do Dive Log or Halcyon Dive Systems have ads?
Neither Dive Log nor Halcyon Dive Systems shows ads.
Which is updated more often, Dive Log or Halcyon Dive Systems?
Dive Log ships an update monthly, and Halcyon Dive Systems every 2 weeks. Most recently, Dive Log was updated on September 23, 2026 and Halcyon Dive Systems on July 24, 2026.

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