AWattPrice

AWattPrice helps people understand dynamic electricity prices and find cost-effective windows for power consumption. The app shows upcoming prices in a clear, interactive graph, helps plan larger appliances such as washing machines, dishwashers, heat pumps, and electric vehicles, and can tailor the display to a specific tariff.

It runs on iOS, iPadOS, and macOS, with a FastAPI backend for cached ENTSO-E market data and price notifications.

Features

• Interactive price chart for current and upcoming electricity prices.
• Cheapest-window finder for appliances, EV charging, heat pumps, and similar loads.
• Tariff adjustments with fixed surcharges, percentage-based fees, monthly costs, and taxes where available.
• Push notifications when prices move below or above configured thresholds.
• Energy mix insights, including renewable share where the backend has data.
• Home screen widgets for current prices, upcoming prices, cheap windows, and renewable mix.
• German and English localization.

App Store Screenshots

Project Structure

AWattPrice/
  AWattPrice.xcodeproj       Xcode project for the app and widget extension
  AWattPrice/                SwiftUI app target
  AWattPriceWidget/          WidgetKit extension
  Shared/                    Shared models, API client, resources, and storage
  AWattPriceTests/           Unit tests

backend/
  src/                       FastAPI app, data refresher, and notifications
  docs/                      Backend data-flow notes
  compose.v3.yaml            Production Compose setup

website/
  index.html                 Public website with App Store, support, and legal links
  images/                    App icon, App Store badge, screenshots, and media