Comparison

O'Dive vs mvPlan

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

Head to head
About

O'Dive

This app uses patented acoustic sensor technology to analyze gas microbubbles detected after a dive. It helps divers assess their decompression procedures and improve their safety and practice based on personalized acoustic measurements.

Highlights
  • Acoustic sensor technology
  • Gas microbubble detection
  • Personalized decompression analysis
  • Diving practice improvement
  • Diving safety enhancement
  • Sensor control interface
Read full description

O'Dive's unique and patented technology includes an acoustic sensor connected to a smartphone app and a server with specialised analysis capabilities. O'Dive's objectives are: - Indicating to divers, by taking into consideration gas microbubbles detected, the adequation of their decompression procedures with their own person and diving practice; - Help them improve their practice and safety. The personalization of the diving procedure is based on the acoustic measurement of circulating gas microbubbles detected post-dive in the divers' venous system. O'Dive app allows to control the sensor by being the interface between the sensor, the server and the user. O'Dive is a technological innovation developped by AZOTH SYSTEMS.

About

mvPlan

Features
Read full description

Plan your dives with confidence. mvPlan is a full-featured decompression planner for recreational and technical divers, built on the proven Buhlmann ZHL-16B and ZHL-16C algorithms with gradient factor conservatism. OPEN CIRCUIT & CLOSED CIRCUIT Plan dives on standard open circuit or CCR rebreathers with fixed or dynamic setpoints, multiple diluents, and full bailout planning with stress gas consumption. ALL GAS MIXES Air, Nitrox, Trimix, Heliox, pure O2 -- use any combination with automatic MOD, END, EAD, gas density and ppO2 calculations. MULTI-LEVEL PROFILES Build complex dive profiles with multiple depth changes, gas switches, and diluent changes. mvPlan computes the optimal decompression schedule for the entire profile. SAFETY MONITORING Track CNS and OTU oxygen toxicity, narcosis exposure (END), gas density alerts, and isobaric counter-diffusion (ICD) risk. Configurable alerts keep you informed. GAS PLANNING Calculate required gas volumes for each mix with configurable RMV rates for bottom, deco, and stress phases. Tank capacity checks ensure you carry enough gas. BAILOUT PLANNING Full worst-case bailout calculations for CCR divers: configurable bailout delay, stress RMV, and independent bailout gas selection with complete decompression schedule. VISUAL DIVE PROFILE Interactive depth/time graph with ceiling overlay, gas change markers, and pinch-to-zoom. Tap any segment to inspect tissue saturation across all 16 compartments. PDF EXPORT & SHARING Generate print-ready dive tables with all parameters, deco schedule, and gas requirements. Share plans directly from your device. SAVE & ORGANIZE Save unlimited dive plans, import/export as JSON, rename and manage your plan library. FULLY CONFIGURABLE Gradient factors (with presets), ascent/descent rates, last stop depth, altitude compensation up to 4000m, salt/fresh water, metric or imperial units. 6 LANGUAGES English, French, German, Spanish, Italian, Polish. Dark and light themes for comfortable display in any conditions. Free and open source (GPL). No ads. No account required. No data collection.

Screenshots

O'Dive4 screens
mvPlan4 screens

Verdict

The call

The clearest difference is update cadence: mvPlan at fortnightly against O'Dive's monthly. O'Dive's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

O'Dive ships an update monthly, mvPlan fortnightly. The most recent releases landed on June 4, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 8 level
O'Dive versus mvPlan: the parameters behind the verdict, then further details
ParameterO'DivemvPlan
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size25 MB10 MB
Age rating4+4+
DeveloperAZOTH SYSTEMSCAP-REL

In-app purchases

None

O'Dive

No in-app purchases

None

mvPlan

No in-app purchases

Questions

Is O'Dive free?
O'Dive is free to download, with no in-app purchases.
Is mvPlan free?
mvPlan is free to download, with no in-app purchases.
Do O'Dive or mvPlan have ads?
Neither O'Dive nor mvPlan shows ads.
Which is updated more often, O'Dive or mvPlan?
O'Dive ships an update monthly, and mvPlan fortnightly. Most recently, O'Dive was updated on June 4, 2026 and mvPlan on September 22, 2026.

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