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mactop vs iStatistica Core: catalog facts
mactop	iStatistica Core
Free Free and open source under the MIT licence.	Free The product page lists a download and no price.
macOS, Command line	macOS
Separate metrics for efficiency and performance cores Shows GPU usage and frequency, power draw and temperatures	Per-core frequency for P-cores, E-cores and GPU CPU, GPU and NPU power draw history
Only works on Apple Silicon Macs Terminal interface only	Apple Silicon Macs only Requires macOS 13 or later
Downloadable app	Downloadable app
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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