WattSpy EPEX Spot Market Rates
Utilities
$1.99 · Designed for iPad. Not verified for macOS.
WattSpy gives you access to the European EPEX Spot Market, where electricity prices for each hour or quarter-hour of the day are established.
If you have an energy contract with dynamic pricing, you can optimize your electricity usage by adjusting your electricity consumption patterns based on the price fluctuations. Here's how:
- Shift High Consumption Activities: reduce energy costs by scheduling energy-intensive activities (like EVs', washing machines, dishwashers, or electric heating) during hours when electricity prices are lower.
- Use Home Automation: home automation systems or smart appliances can automatically adjust the timing of electricity usage based on the predicted lower-cost periods provided by the Epex-client.
- Energy Storage: energy storage systems (like batteries) can store electricity during low-price hours and use it during peak-price hours.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Added error description and retry button
- Improved date skip buttons
- Added various user interface improvements
The developer, Tom Van Laerhoven, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tom Van Laerhoven
- Size
- 35.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Tomkat

