Side by side

Earthster vs Persefoni

Both stand on environmental software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Persefoni combines emissions accounting coverage with guided disclosure tools and anomaly detection. The free Pro plan has clear user and reporting limits, while Advanced pricing is available by demo request.

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The facts

	Earthster	Persefoni
Free plan	Yes	Yes
Open source	Not published	Not published
Runs on	Web	API, Web
Lowest paid plan	Not published	Free or on request
Plans published	None	2
Maker	Not published	Not published
Website	earthster.org	persefoni.com
On environmental software	#5 of 22	#1 of 22

Earthster: what it does well

Persefoni: what it does well

Free Pro plan with unlimited assets and historical years
Covers Scope 1, 2, and all 15 Scope 3 categories
Guided disclosures for CSRD, ISSB, and CDP
Copilot support and AI anomaly detection
Both plans list four security certifications

What to know first

Pro is limited to one user
Detailed GHG Metrics Reports are not included in Pro
Advanced pricing requires a demo request
Concierge Support is a paid upgrade

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