Home › Utilities
US
1 of 1 storefronts
Content in en-US
Content in en-US
Information
Apple ID6743813617
Bundle IDcom.tomkat.wattspy
SellerSeller
Min iOS16.0
Min macOS12.0
Device familiesiphone, ipad
Released2025-04-12
Copyright© 2026 Tomkat
Privacy policyLink ↗
Preview 2 platforms
iPhone 6 images
iPad 6 images
What’s New Version v2.2.0
- Added error description and retry button
- Improved date skip buttons
- Added various user interface improvements
Description
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.
Accessibility
ipadiphonemacrealityDevicetvoswatch
Version history 8 versions
Build 883586140vv2.2.02026-03-20 22:31:11
- Added error description and retry button
- Improved date skip buttons
- Added various user interface improvements
Build 883196544vv2.1.12026-03-10 15:55:19
- Fixed an issue where updating market data would sometimes result in an error.
Build 882679010vv2.1.02026-02-22 21:27:45
- Added tools sections with cost configuration.
- Added collapsable daily summary card.
- Revised translations & terminology.
- Updated theme.
Build 879607028vv1.12.02025-11-08 23:41:08
- Fixed an issue where widgets with German market data would not show market data.
- Enlarged font sizes in charts.
- Added a price-scrubber in the Day Chart.
Build 879190094v1.11.12025-10-27 07:19:41
- Added quarter-hourly electricity prices.
Build 875466210vv1.8.02025-06-11 02:55:38
- Added information button with descriptions of each card.
- Added sharing button for each card.
- Added first widget with current electricity rate, as well as the next 12 low.
Build 873945715v1.2.02025-04-12 09:23:05
- Corrected time and energy units in charts.
- Fixed an issue where tapping the day picker in the hourly price chart would not work.
- Made some minor styling updates.
Build 873563690v1.1.22025-03-28 13:45:03
Price history by region
Currency
Show
Columns
Search
Availability 1 of 1 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | USD 1.99 | 0 | — | v2.2.0 |
Change log 11 changes · US
✎
releaseNotes updated
- Added error description and retry button
- Improved date skip buttons
- Added various user interface improvements
✎
description updated
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 en
✎
name updated
WattSpy EPEX Spot Market Rates
◆
Version v2.2.0 released
- Added error description and retry button
- Improved date skip buttons
- Added various user interface improvements
◆
Version v2.1.1 released
- Fixed an issue where updating market data would sometimes result in an error.
◆
Version v2.1.0 released
- Added tools sections with cost configuration.
- Added collapsable daily summary card.
- Revised translations & terminology.
- Updated theme.
◆
Version v1.12.0 released
- Fixed an issue where widgets with German market data would not show market data.
- Enlarged font sizes in charts.
- Added a price-scrubber in the Day Chart.
◆
Version 1.11.1 released
- Added quarter-hourly electricity prices.
◆
Version v1.8.0 released
- Added information button with descriptions of each card.
- Added sharing button for each card.
- Added first widget with current electricity rate, as well as the next 12 low.
◆
Version 1.2.0 released
- Corrected time and energy units in charts.
- Fixed an issue where tapping the day picker in the hourly price chart would not work.
- Made some minor styling updates.
◆
Version 1.1.2 released