DecoTheory

Matej Hron

About this app

DecoTheory is the mobile companion to decotheory.eu — a fast decompression planner and diving theory toolkit built on the same Bühlmann ZH-L16 decompression engine as the web app.

Important Notice

Educational use only.

DecoTheory is not a substitute for a certified dive computer, official decompression tables, or proper dive training. Always plan and execute real dives using certified equipment and strictly within the limits of your training and certification. Do not rely on DecoTheory for actual dive planning or dive execution.

Features

Plan
Enter your target depth and bottom time to generate total runtime, a full decompression schedule, and a dive profile chart with Bühlmann ceiling visualization. Supports single-gas decompression planning with configurable Gradient Factors.

Schedule
View a clear decompression stop schedule with stop depths, stop times, runtime progression, and TDT (Total Dive Time) visible at a glance.

Profile Chart
See your dive as a depth-over-time profile with the calculated Bühlmann GF ceiling displayed alongside, allowing you to visualize how the planned ascent remains below the decompression ceiling throughout the dive.

Tests
Practice diving theory with included CMAS and SPČR quizzes in both Czech and English. Useful for reviewing theory and preparing for written examinations.

Diver Profile
Save your preferred planning settings locally, including breathing gas, cylinder size, Gradient Factors, SAC rate, and water/environment settings.

Privacy

DecoTheory stores all data locally on your device. The app does not transmit data to any server, use analytics, include crash reporting, display ads, or require an account. For full details, see decotheory.eu/privacy.