Comparison

O'Dive vs ToolsX

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

ToolsX

Features
Read full description

ToolsX is the gas calculator for technical and recreational diving: plan the right mix, check safety limits and get the exact blending recipe, all in one beautifully designed app. GAS PLANNER • Automatic nitrox or trimix recommendation from depth and max ppO2 • Live MOD, END, ppO2 at depth and gas density • Density warnings (5.2 and 6 g/L thresholds) and mix depth ceiling • Manual trimix analysis with free O2/He input and "oxygen is narcotic" option MIX RECIPE • Enter your starting and target mix: the app computes the exact helium, oxygen and air additions • Fill sequence picked automatically from all 6 permutations to minimize the transient ppO2 peak • Step-by-step breakdown with tank pressure and ppO2 after every addition BLEND STUDIO • Direct partial-pressure trimix blender • Step blending mode (add He, O2, air) with final mix and ppO2 peaks • Manual sequence override when you need it PRESETS • Save and recall complete gas, tank and blending setups • Metric (m, bar, L) or imperial (ft, psi, ft³) units with automatic conversion Italian and English interface, instant calculations as you type, Liquid Glass design built for iOS 26. Note: ToolsX is a planning aid. It does not replace technical training, gas analysis procedures or your dive computer. Always dive within the limits of your certification.

Screenshots

O'Dive4 screens
ToolsX4 screens

Verdict

The call

The clearest difference is update cadence: ToolsX at every 3 days against O'Dive's monthly. O'Dive's advantage is iOS requirement (13.0 vs 26.0). 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, ToolsX every 3 days. The most recent releases landed on June 4, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 8 level
O'Dive versus ToolsX: the parameters behind the verdict, then further details
ParameterO'DiveToolsX
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better26.0
Further details — not scored
Size25 MB3 MB
Age rating4+17+
DeveloperAZOTH SYSTEMSMATTEO GARZULANO

In-app purchases

None

O'Dive

No in-app purchases

None

ToolsX

No in-app purchases

Questions

Is O'Dive free?
O'Dive is free to download, with no in-app purchases.
Is ToolsX free?
ToolsX is free to download, with no in-app purchases.
Do O'Dive or ToolsX have ads?
Neither O'Dive nor ToolsX shows ads.
Which is updated more often, O'Dive or ToolsX?
O'Dive ships an update monthly, and ToolsX every 3 days. Most recently, O'Dive was updated on June 4, 2026 and ToolsX on September 18, 2026.

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