Comparison

Deep Tools vs PhorcysMOD

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

Head to head
About

Deep Tools

This app is a comprehensive tool for divers, offering planning, logging, and calculation features. It supports recreational, technical, and rebreather diving with advanced decompression planning and gas blending capabilities. Easily import dive data and manage your underwater adventures.

Highlights
  • Decompression planning (Bühlmann ZH-L16)
  • Dive log with Shearwater import
  • Nitrox and Trimix gas blending
  • Multiple dive calculators
  • Metric and imperial units
  • Multi-level and repetitive dive planning
Features
Read full description

The complete dive planner, dive log and dive calculator app for recreational, technical and rebreather divers. Plan decompression dives with Bühlmann ZH-L16 and gradient factors, import your dives from a Shearwater dive computer, blend nitrox and trimix, and get quick answers to the questions you ask before every dive. All in one app, for open circuit (OC) and CCR. Whether you are in dive training, planning complex deco dives, or logging your underwater adventures, Deep Tools gives you reliable results you can trust. DIVE CALCULATORS - Maximum Operating Depth (MOD) - Oxygen partial pressure (ppO₂) - Equivalent Air Depth (EAD) - Equivalent Narcotic Depth (END) - Equivalent Air Density Depth (EADD) - No Decompression Limit (NDL) - Best nitrox mix for depth - Best trimix mix for depth - Gas consumption (SAC / RMV) and gas density - Lift bag calculator DECO PLANNER * Plan complex dives with confidence on open circuit (OC) or rebreather (CCR): - Bühlmann ZH-L16B and ZH-L16C with gradient factors (GF) - Multi-level and repetitive dive planning - Lost gas plans and CCR bailout planning, with custom bailout points - Gas consumption, CNS and OTU for every dive - Dive profile, run time table, tissue pressure graph and slate view - Share dive plans as a file, text, slate or image DIVE LOG * - Import dives from Shearwater dive computers (Petrel, Perdix, NERD, Teric and more) - Full dive profile with ppO₂, CNS, TTS, SAC and gas density - Dive sites with name, coordinates, map and custom tags - Automatically merge dives with short surface intervals - Share dives with your buddies - Local backup and easy transfer to a new device GAS BLENDER * Mix accurate nitrox and trimix: - Partial pressure blending to the desired gas - Blending with a top-off gas - Continuous flow blending - Gas cost estimate MORE - Metric and imperial units - Altitude diving and water type (salt, fresh, EN13319) - Custom tank / cylinder database - Available in 11 languages * The deco planner, dive log and gas blender are included in Deep Tools Premium. Try them free during the free trial. Deep Tools is a planning aid. It does not replace proper dive training or certification. Special thanks to V. Paul Gordon, Serge Nelissen and Michael Heus for extensive testing and valuable contributions. Terms of Use: https://www.deepblue.si/privacy/terms-of-service.php Privacy Policy: https://www.deepblue.si/privacy/

About

PhorcysMOD

This app quickly calculates the Maximum Operating Depth (MOD) for nitrox mixes. It's designed for divers to ensure safe pre-dive planning with instant results based on oxygen percentage, PO2, and water type. The interface is clean and intuitive for easy use on mobile devices.

Highlights
  • Instant MOD calculations
  • Adjustable O₂ percentage
  • Selectable PO₂ setpoints
  • Fresh vs. Salt water adjustment
  • Large, readable display
  • Accurate formula-based results
Features
Read full description

MOD Calculator provides divers with a fast, accurate way to calculate the Maximum Operating Depth (MOD) for any nitrox mix. Built for both recreational and technical divers, the app delivers instant results using your selected oxygen percentage, PO₂ setting, and choice of fresh or salt water. Designed with a clean, intuitive interface, MOD Calculator makes pre-dive planning quick and reliable—right from your iPhone. Features Instant MOD calculations in both feet and meters Adjustable O₂ percentage slider for precise nitrox mixes Selectable PO₂ setpoint options from 1.2 to 1.6 (and more) Fresh vs. Salt water depth adjustment Large, readable display for quick reference on the boat or during training Accurate formula-based results matching standard dive planning tables Whether you're checking a standard 32% mix or fine-tuning a custom blend, MOD Calculator gives you the exact depth limits you need for a safe dive.

Screenshots

Deep Tools4 screens
PhorcysMOD2 screens

Verdict

The call

The clearest difference is in-app purchases: PhorcysMOD at none against Deep Tools's 3. PhorcysMOD also leads on rating (5.0 vs 4.6). Deep Tools's advantage is ratings volume (93 vs 1). 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. Deep Tools sells 3 in-app purchases, starting at $7.99 per month. PhorcysMOD asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PhorcysMOD holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Deep Tools has 93 ratings behind it against 1, so its average is the more settled of the two.

Scorecard4 real differences · 6 level
Deep Tools versus PhorcysMOD: the parameters behind the verdict, then further details
ParameterDeep ToolsPhorcysMOD
PriceFreeFree
Rating4.6 (93 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings93 — better1
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better17.6
Further details — not scored
Size13 MB3 MB
Age rating4+4+
DeveloperDeep Blue d.o.o.LARRY HACK

Customer experience

Deep Tools

All ratings93 ratings
Positive91.4%
Neutral2.2%
Negative6.5%
Written reviews6 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

PhorcysMOD

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Deep Tools

Subscriptions2
  • Subscription Monthly$7.991 Month
  • Subscription Yearly3 Days trial$22.991 Year
One-time1
  • Lifetime Subscription$49.99
None

PhorcysMOD

No in-app purchases

Questions

Is Deep Tools free?
Deep Tools is free to download, with in-app purchases available.
Is PhorcysMOD free?
PhorcysMOD is free to download, with no in-app purchases.
Which has better reviews, Deep Tools or PhorcysMOD?
PhorcysMOD is rated higher. Deep Tools averages 4.6 out of 5 from 93 ratings, while PhorcysMOD averages 5.0 from 1 ratings.
Do Deep Tools or PhorcysMOD have ads?
Neither Deep Tools nor PhorcysMOD shows ads.

Other comparisons