NGC Tool vs gasblender
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NGC Tool
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NGC Tool est une application développée pour l'électronique des recycleurs de plongée TRITON et NEPTUN. NGC Tool permet la mise à jour le logiciel de l'électronique NGC de votre recycleur et le pilotage des préférences utilisateurs par Bluetooth.
gasblender
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GasBlender is the gas blending calculator for technical diving. It works out your Nitrox and Trimix fills step by step, with the precision blenders and tech divers expect. Whether you are mixing a simple Nitrox 32 or a hypoxic multi-cylinder Trimix, GasBlender gives you the fill sequence bar by bar, checks the mix for safety and estimates its cost. THREE BLENDING METHODS - Partial pressure: empty the cylinder, then add each gas. Guaranteed result. - Top-up: keep the gas already in the cylinder and adjust. No waste. - Optimized: use your buffer mixes (Nitrox 40, etc.) before pure O2 to cut costs. KEY FEATURES - Nitrox and Trimix calculations - Reverse mode: find the resulting mix from measured pressures - Multi-cylinder support - Manage your available gas sources - Reusable mix templates - Blending history with CSV export - Cost estimation - Cylinder identification by QR code - Metric and imperial units - Light and dark themes SAFETY FIRST GasBlender shows real-time warnings on the critical parameters: partial pressure of oxygen (PPO2), maximum operating depth (MOD) and equivalent narcotic depth (END), so you can confirm a mix stays within your limits before filling. PRIVACY AND OFFLINE Fully functional offline. No sign-up, no data sent without your consent. Optional sync with your own server is available. FREE AND OPEN SOURCE GasBlender is free software (AGPL-3.0 license). The code is open and auditable. DISCLAIMER GasBlender is a calculation aid. It does not replace blender training or analysis of the final mix with a calibrated analyzer. Always analyze your gas before diving.
Screenshots
Verdict
NGC Tool and gasblender are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | NGC Tool | gasblender |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 31 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Multi3s | CAP-REL |
In-app purchases
NGC Tool
No in-app purchases
gasblender
No in-app purchases








