Comparison

Pro Dive vs Depth.

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

Head to head
About

Pro Dive

Features
Read full description

Pro Dive continuously tracks your depth, time, ascent rate and tissue loading to keep you informed throughout every dive. Real-Time Dive Computer • Certified to EN13319 — the international standard for dive instruments. • Live depth display • No-Deco Limit (NDL) • Decompression ceiling and Time-To-Surface (TTS) estimates • Gradient Factors and multi gas support (Nitrox / Trimix capable engine) • CCR support with fixed PPO2 and Bail Out modes • Ascent-rate tracking with smart averaging • Automatically detects submersion and starts logging • Underwater Compass • Indicates no fly time Decompression Model Built on the Bühlmann ZH-L16C model with gradient factors, Pro Dive continuously updates a full 16-compartment tissue model during your dive — just like a dedicated dive computer. Automatic Dive Logs Every dive is saved automatically and synced to your iPhone: • Full dive profile graph • Max depth, duration, start/end times • Min/max temperature • Location via GPS + reverse geocoding • Notes and dive-day details • All logs stored locally with optional cloud backup (if applicable) Designed for Apple Watch Ultra Pro Dive is built specifically for the Ultra’s: • Depth and water-temperature sensors • Bright always-on display • Large Action Button and crown to quickly select options underwater • Rugged dive-ready design Offline, Reliable, and Fast All calculations run entirely on the watch — no signal required. Your watch keeps logging even if the iPhone is not nearby. For Recreational and Technical Divers Whether you’re practising buoyancy in the pool, exploring a wreck, or building up to technical training, Pro Dive provides a clean, modern interface with professional-grade dive calculations behind it. Privacy Policy - https://www.tec-diver.eu/pro-dive-privacy-policy.html End User License Agreement - Privacy Policy - http://www.tec-diver.eu/easy-deco-privacy-policy.html

About

Depth.

Features
Read full description

Depth. is your dive log for iPhone. Simple, fast and beautiful. LOG EVERY DIVE Location, depth, dive time, water temperature, visibility, equipment, weights and buddy all in one place. Dives are automatically saved to your account. MARINE SPECIES Save species you encounter during your dive. Depth. has an extensive catalog with photos and information about fish, coral and other underwater animals. BUDDY SYSTEM Send a dive directly to your buddy via their Depth ID. They will see your log appear in their timeline. AI ASSISTANT Ask questions about diving techniques, species or your equipment. The built-in AI assistant will help you further. EXPORT Download all your dives as JSON, CSV or XML compatible with other logbooks. IMPORT Do you dive via Diviac? Import all your existing dives with one tap. DESIGNED FOR DIVERS No subscriptions. No ads. Just a clean, quick logbook that you always have with you.

Screenshots

Pro Dive4 screens
Depth.4 screens

Verdict

The call

The clearest difference is in-app purchases: Depth. at none against Pro Dive's 3. Depth. also leads on iOS requirement (16.0 vs 18.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Pro Dive sells 3 in-app purchases, starting at $6.99 per month. Depth. asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 29, 2026 and September 26, 2026 respectively.

Scorecard2 real differences · 4 level
Pro Dive versus Depth.: the parameters behind the verdict, then further details
ParameterPro DiveDepth.
PriceFreeFree
Update frequencyEvery 5 weeksEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS18.016.0 — better
Further details — not scored
Size32 MB2 MB
Age rating4+4+
DeveloperMillennium LtdJosephus Fransiscus Zegers

In-app purchases

3 purchases

Pro Dive

Subscriptions2
  • Pro Dive monthly$6.991 Month
  • Pro Dive anual$59.991 Year
One-time1
  • Pro Dive Lifetime$139.99
None

Depth.

No in-app purchases

Questions

Is Pro Dive free?
Pro Dive is free to download, with in-app purchases available.
Is Depth. free?
Depth. is free to download, with no in-app purchases.
Do Pro Dive or Depth. have ads?
Neither Pro Dive nor Depth. shows ads.
Which is updated more often, Pro Dive or Depth.?
Pro Dive ships an update every 5 weeks, and Depth. every 5 weeks. Most recently, Pro Dive was updated on September 29, 2026 and Depth. on September 26, 2026.

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