About
MULTIDECO is a comprehensive decompression planning tool designed for technical divers, rebreather users, and dive professionals who need precise and reliable decompression profiles. It supports two industry-recognised decompression models: the Varying Permeability Model (VPM-B), which is widely preferred by technical divers for its bubble-growth accounting and lower overall supersaturation, and the Bühlmann ZHL-16 algorithm for traditional gradient-factor-based planning. The software handles a broad range of dive configurations including Nitrox, Trimix, TriOx, HeliOx, Open Circuit (OC), Semi-Closed Rebreather (SCR), Closed Circuit Rebreather (CCR), RB80, KISS, and multilevel dives. MULTIDECO generates plans for lost decompression gas scenarios, turn pressures, range plans, and rebreather bail-out situations, making it a trusted companion for complex technical dive planning. Key tools include a Gas Mixer, turn pressure formula calculator, customisable deep and extended stops, airbreak management, and graphical visualisation of dive profiles. Users can save complex dive plan layouts, export data, and set watches and warnings for critical thresholds. Available on iPad, iPhone, Android, PC, and Mac, MULTIDECO is praised for its intuitive interface — users report being proficient within minutes. It is a one-time purchase at £49.99, offering excellent value for serious divers who need a trustworthy, multi-platform deco planner.
Key Features
- Dual Decompression Models: Supports both VPM-B (Varying Permeability Model) and Bühlmann ZHL-16, giving divers flexibility to plan with their preferred algorithm.
- Broad Gas Mix Support: Calculates decompression profiles for Nitrox, Trimix, TriOx, HeliOx, OC, SCR, CCR, RB80, KISS, and multilevel dives.
- Emergency & Safety Planning: Generates plans for lost deco gas, turn pressures, range plans, and rebreather bail-out scenarios with configurable warnings.
- Gas Mixer & Profile Customisation: Built-in Gas Mixer tool along with customisable deep and extended stops, stop time control, and airbreak management.
- Multi-Platform & Data Export: Available on iOS, Android, Mac, and PC with graphical dive profile views, saveable plan layouts, and data export functionality.
Use Cases
- Technical divers planning complex multi-gas decompression dives using Trimix or HeliOx mixtures.
- Rebreather divers (CCR, SCR, RB80, KISS) generating bail-out plans and lost deco gas scenarios.
- Dive instructors and expedition leaders creating range plans and turn pressure calculations for student or team dives.
- Deep recreational divers using Nitrox who want more precise decompression profile management than dive computer defaults.
- Dive professionals and researchers comparing VPM-B versus Bühlmann ZHL-16 decompression outcomes for training or planning purposes.
Pros
- Industry-Standard Algorithms: Uses VPM-B and Bühlmann ZHL-16 — the two most trusted decompression models in technical diving — for reliable and scientifically-backed profiles.
- Wide Dive Configuration Support: Covers virtually every type of technical dive including rebreathers (CCR, SCR, RB80, KISS), mixed gases, and multilevel profiles.
- Intuitive Interface Across All Platforms: Users report being able to generate dive plans within minutes, with a clean UI optimised for both mobile and desktop use.
- One-Time Purchase: A single payment of £49.99 with no subscription required, making it cost-effective for frequent technical divers.
Cons
- No Free Trial or Freemium Tier: MULTIDECO requires an upfront purchase with no free version available to evaluate the software before buying.
- Niche Use Case: Designed exclusively for technical and rebreather divers, so it has limited appeal outside of the specialised diving community.
- No Web App: MULTIDECO requires a native app installation on iOS, Android, Mac, or PC — there is no browser-based version for quick access.
Frequently Asked Questions
What decompression models does MULTIDECO use?
MULTIDECO supports two models: the Varying Permeability Model (VPM-B), popular among technical divers for its micro-bubble management, and the Bühlmann ZHL-16 algorithm, a traditional gradient-factor-based model widely used in the industry.
What types of dives can MULTIDECO plan?
MULTIDECO plans decompression profiles for Nitrox, Trimix, TriOx, HeliOx, Open Circuit (OC), SCR, CCR, RB80, KISS, and multilevel dives. It also handles lost deco gas, turn pressures, range plans, and rebreather bail-out situations.
Which platforms is MULTIDECO available on?
MULTIDECO is available on iPad, iPhone (iOS), Android, Mac, and PC (Windows), making it accessible across all major platforms.
How much does MULTIDECO cost?
MULTIDECO is available as a one-time purchase of £49.99 through the App Store or via the Quantumdiver website. There is no subscription or recurring fee.
Is MULTIDECO suitable for beginner divers?
MULTIDECO is primarily designed for technical and rebreather divers who require advanced decompression planning. While the interface is described as intuitive, a solid understanding of decompression theory is recommended to use it safely and effectively.
