Watto
Hourly Electricity Prices
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
- Hourly prices for EPEX SPOT AT and DE
- Shows you the best times to charge
- Calculates the real price based on your fee structure
- Alerts you when the price drops below a set limit
- See historical data like average price per week and best weekday
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- Clearer cheapest-time results with visual dividers for larger price jumps
- New setting to adjust price segmentation sensitivity
- Improved Analyze tab layout and smoother chart interaction
- Weekday analysis now ranks the cheapest days more clearly
- More accurate price calculations, including edge cases around fees and VAT
- Fixed Central European daylight saving time handling
- Improved price alert behavior when notification permissions are disabled
- Better formatting for prices and percentages
- Improved layout support for larger text sizes
- New ad-supported mode, with an optional ad-free subscription for supporting Watto
- General performance, reliability, and UI improvements
The developer, Erik Aigner, 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
- Erik Aigner
- Size
- 8.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and German
- Age Rating
4+
- 4+
- Contains
Advertising
- In-App Purchases
Yes
- Yearly $3.99
- Copyright
- © 2026 bytieful e.U.
