Populion：人口動態の科学をマスターする

Populion: Your Pocket Population Simulator Ever wonder how different factors influence population growth? Curious about how long it might take for one group to become a majority? Dive into the fascinating world of demographics with Populion, your personal population simulator! Populion empowers you to model and visualize population dynamics right on your iPhone or iPad. Set up your own scenarios with up to 10 distinct groups, defining their unique characteristics and watching how they evolve over time. Key Features: Customize Your World: Define detailed parameters for each group: Baseline Population & Group Color Total Fertility Rate (TFR) Life Expectancy at Birth Sex Ratio (Overall & At Birth) Mean Age at First Marriage (Men) Average Childbearing Age (Women) Percentage Never Marrying Polygyny Rate (Max Wives) ...and more! Use info buttons in settings for standard demographic term explanations. Visualize Growth: Watch your simulation unfold month-by-month (at adjustable speeds) on clear, intuitive charts. Choose between Pie and Bar chart visualizations. Track Dominance: Select a target group and see how long it takes to reach a specific percentage (e.g., 50%) of the total population. Get warnings if your target group's population starts declining. Predict the Future: Use the built-in prediction tool! Set a future date (MM/YYYY) and instantly calculate the estimated population breakdown based on your current settings. Perfect for "what-if" analysis. Interactive Exploration: Tap on chart segments (Bars or iOS 17+ Pie slices) to see detailed population numbers and the date for that specific point in time. Access group-specific settings directly from the chart popover! Timeline Control: Easily scrub through the simulation timeline using the slider to view population data at any historical point in your simulation run. Save & Load Scenarios: Create and save multiple simulation profiles with different parameters. Load them instantly to compare scenarios or continue your analysis later. Export Data: Download your simulation history as a CSV file for offline analysis or use in spreadsheets. Modern & Intuitive: Built with the latest SwiftUI for a smooth, responsive experience on iOS 16 and above. Who is Populion for? Students learning about demography, sociology, or statistics. Researchers and analysts exploring population models. Policy planners considering demographic impacts. Anyone curious about population trends and group dynamics! Please Note: Populion uses a simplified demographic model (no age structure, no migration) for illustrative and educational purposes. Predictions are based solely on the parameters you provide and represent trends rather than precise forecasts. Download Populion today and start exploring the dynamics of population change! To see the population growth simulation engine, check out the code below: https://raw.githubusercontent.com/FreddyMukkath/Populion/refs/heads/main/SimulationEngine.swift