Comparison

Dive Log vs AWU2UDDF

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

AWU2UDDF

Export underwater depth and temperature data from your Apple Watch to a standard UDDF XML file. This file can then be imported into popular diving log software for comprehensive record-keeping. It seamlessly integrates with the Health App and HealthKit.

Highlights
  • Export underwater depth and temperature data
  • Standard Universal Dive Data Format (UDDF) XML output
  • Import into Macdive or Subsurface
  • Integrates with Health App and HealthKit
Read full description

AWU2UDDF is used to export underwater depth and temperature data collected on your Apple Watch into a standard Universal Dive Data Format (UDDF) XML file. That file can then be imported into standard diving log software such as Macdive or Subsurface to complete your diving log. AWU2UDDF integrates with the Health App and the HealthKit framework to access the depth and temperature date stored by the phone.

Screenshots

Dive Log4 screens
AWU2UDDF3 screens

Verdict

The call

The clearest difference is price: AWU2UDDF at Free against Dive Log's $14.99. AWU2UDDF also leads on in-app purchases (none vs 13) and rating (5.0 vs 4.7). Dive Log's advantage is update cadence (monthly vs every 14 months) and ratings volume (106 vs 2). On ads 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

AWU2UDDF is free to download; Dive Log costs $14.99 up front. Dive Log sells 11 one-off in-app purchases. AWU2UDDF asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

AWU2UDDF 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 2, so its average is the more settled of the two. Written reviews point the same way: 84% of Dive Log's written reviews are positive against 100% of AWU2UDDF's.

UpkeepUpdate frequency

Dive Log ships an update monthly, AWU2UDDF every 14 months. The most recent releases landed on October 15, 2026 and September 20, 2026 respectively.

Scorecard9 real differences · 2 level
Dive Log versus AWU2UDDF: the parameters behind the verdict, then further details
ParameterDive LogAWU2UDDF
Price$14.99Free — better
Rating4.7 (106 ratings)5.0 (2 ratings) — better
Positive reviews83.8% of reviews100.0% of reviews — better
Number of ratings106 — better2
Update frequencyMonthly — betterEvery 14 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#38 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size33 MB1 MB
Age rating4+4+
DeveloperGreg MclaughlinDouglas Junkins

Customer experience

Dive Log

All ratings106 ratings
Positive94.3%
Neutral2.8%
Negative2.8%
Written reviews302 reviews
Positive83.8%
Neutral6.6%
Negative9.6%

AWU2UDDF

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
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

AWU2UDDF

No in-app purchases

Questions

Is Dive Log free?
Dive Log costs $14.99, and also offers in-app purchases.
Is AWU2UDDF free?
AWU2UDDF is free to download, with no in-app purchases.
Which has better reviews, Dive Log or AWU2UDDF?
AWU2UDDF is rated higher. Dive Log averages 4.7 out of 5 from 106 ratings, while AWU2UDDF averages 5.0 from 2 ratings.
Do Dive Log or AWU2UDDF have ads?
Neither Dive Log nor AWU2UDDF shows ads.
Which is updated more often, Dive Log or AWU2UDDF?
Dive Log ships an update monthly, and AWU2UDDF every 14 months. Most recently, Dive Log was updated on October 15, 2026 and AWU2UDDF on September 20, 2026.

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