Comparison

Subsurface vs Blue Infinity Dive Watch

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

Head to head
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.

About

Blue Infinity Dive Watch

Track your snorkeling, freediving, and spearfishing sessions with real-time depth, duration, and heart rate data. Review your dive history, routes, and detailed metrics on a companion app.

Highlights
  • Real-time depth and duration
  • Heart rate and water temperature
  • Location tracking
  • Dive session history
  • Dive route on map
  • Depth over time chart
Features
Read full description

The premier app for snorkeling, freediving and spearfishing on Apple Watch (no scuba). With a focus on simplicity and ease of use, it displays the key information you want when in the water and, when you’re back on deck, provides a beautiful overview of your session. On the Watch (Free) * Real-time depth and duration when you dive, * Last dive depth and duration on the surface * Surface and overall session timer * Real-time heart rate and water temp * Location tracking Companion app (Paid subscription - first 3 dives free) * List of all your dive sessions * Dive route on a map * Depth over time chart * Key metrics from your dive We’re focussed on designing and building the premiere app for snorkeling, freediving and spearfishing and leaving out all things scuba to keep it simple. Unlimited access subscription: * You can subscribe for unlimited access to all features and content offered for purchase within Blue Infinity. * Subscriptions are billed monthly or annually at the rate selected depending on the subscription plan. * Payment will be charged to App Store Account at confirmation of purchase. * Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period * Account will be charged for renewal within 24-hours prior to the end of the current period, and cost depends on your chosen package. * Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. * Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Terms of use - https://blueinfinity.app/terms Privacy policy - https://blueinfinity.app/privacy Apple Terms - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Subsurface4 screens
Blue Infinity Dive Watch3 screens

Verdict

The call

The clearest difference is review sentiment: Blue Infinity Dive Watch at 100% against Subsurface's 63%. Blue Infinity Dive Watch also leads on update cadence (monthly vs every 2 months). Subsurface's advantage is in-app purchases (none vs 2). On price, ads, 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. Blue Infinity Dive Watch sells 2 in-app purchases, starting at $5.99 per month. Subsurface asks for nothing beyond the download.

UpkeepUpdate frequency

Subsurface ships an update every 2 months, Blue Infinity Dive Watch monthly. The most recent releases landed on September 18, 2026 and September 6, 2026 respectively.

Scorecard4 real differences · 6 level
Subsurface versus Blue Infinity Dive Watch: the parameters behind the verdict, then further details
ParameterSubsurfaceBlue Infinity Dive Watch
PriceFreeFree
Rating4.5 (48 ratings) — better—
Positive reviews63.3% of reviews100.0% of reviews — better
Number of ratings48 — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS1717.0
Further details — not scored
Size52 MB186 MB
Age rating4+4+
DeveloperDirk HohndelJames Mansfield

Customer experience

Subsurface

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

Blue Infinity Dive Watch

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Subsurface

No in-app purchases

2 purchases

Blue Infinity Dive Watch

Subscriptions2
  • Monthly$5.991 Month
  • Annual$29.991 Year

Questions

Is Subsurface free?
Subsurface is free to download, with no in-app purchases.
Is Blue Infinity Dive Watch free?
Blue Infinity Dive Watch is free to download, with in-app purchases available.
Do Subsurface or Blue Infinity Dive Watch have ads?
Neither Subsurface nor Blue Infinity Dive Watch shows ads.
Which is updated more often, Subsurface or Blue Infinity Dive Watch?
Subsurface ships an update every 2 months, and Blue Infinity Dive Watch monthly. Most recently, Subsurface was updated on September 18, 2026 and Blue Infinity Dive Watch on September 6, 2026.

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