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Power Monitor vs iStatistica Core: catalog facts
Power Monitor	iStatistica Core
Free Free and open source under the Apache 2.0 licence.	Free The product page lists a download and no price.
macOS	macOS
Real-time power consumption readings Carbon footprint estimate based on location	Per-core frequency for P-cores, E-cores and GPU CPU, GPU and NPU power draw history
macOS only No formal GitHub releases	Apple Silicon Macs only Requires macOS 13 or later
Downloadable app	Downloadable app
Open source	Closed source
License: Apache-2.0	License not stated
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 2, 2026	Official website Full listing and sources Checked October 2, 2026

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