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Electricity Clock vs Agile Rates: catalog facts
Electricity Clock	Agile Rates
Free Free and open source under GPL-3.0-or-later.	Free Free and open source under the GPL-3.0-or-later license.
Windows, macOS, Linux, Android, Web	Linux
Shows current and forecast hourly rates Compares usage history with past hourly rates	Shows current and forecast electricity rates Finds the cheapest forecast window for a chosen duration
Rate data is published by ComEd for customers in Northern Illinois	For UK Octopus Energy tariffs Usage history requires an API key and account number
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.