Project
splash!
Pool/hot-tub thermal-cost-chemistry planner · Global weather inputs · Browser-local exports · v1.6.4
splash! is a planning tool for temporary and lightly installed outdoor pools and hot tubs. It estimates warm-up effort, overnight cooling, likely running cost, and rough maintenance chemistry quantities by combining geometry, heater setup, tariffs, cover assumptions, and location-aware weather context.
The app was designed to bridge a practical gap: many pool calculators are either too generic or too simplistic. splash! focuses on playpool-specific planning, supports manual inputs at every stage, and blends cost planning with thermodynamic behaviour in one workflow.
Core function
splash! helps answer practical questions before you spend: can your heater reach and hold your target range, how much cover strategy changes outcomes, and what annual/season operating cost you should expect under your selected setup.
Key features
- Expert-flow control order for maintenance planning (location first, deeper controls later).
- Manual forecast workflow that always remains editable.
- Global place search (country/city/town) for weather auto-fill via Open-Meteo geocoding.
- Main-page “Fetch current forecast” action plus improved mobile options/close controls.
- Auto-fill of 3-day daily weather plus 36-hour hourly weather for short-range simulation.
- Location-aware monthly climate profiling with fallback baseline behaviour when archive data is unavailable.
- Rough environment-aware chemistry product quantity guidance (with hard/soft water caveats).
- 3-day stepped simulation, 36-hour pool temperature chart, and monthly maintenance/cost analysis.
- Season planner (pool in / pool away dates) with electricity + water-fill cost summary.
- Local exports (summary/JSON/CSV + chemistry schedule) and browser-side configuration persistence.
- Dedicated appendices page documenting formulas and validated calculation sources.
What makes it distinct
Compared with common pool-cost calculators, splash! is unusual in combining manual-first control, global weather + climate adaptation, and practical forecast/cost outputs tailored to temporary playpool use. It also keeps outputs transparent with model checks, explicit assumptions, and locally generated exports for planning rather than black-box estimates.