Period Tools vs Metriova

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Period Tools compared with Metriova
Detail	Period Tools	Metriova
What it does	Free, accurate cycle and period predictor	Free marketplace fee calculators for Etsy, eBay and Amazon FBA
Stage	Startup	Startup
Founded	2026	2025
Based in	Not given	Not given
Pricing model	Freemium	Free
Pricing	All calculators and guides are free. Period Tools Pro (optional): $4.99/month or $19.99/year.	Not given
Key features	Predicts next 6 periods Calculates ovulation day Identifies fertile window Private on-device tracking Cloud sync for Pro subscribers No signup required	Etsy fee calculator with itemized fees and net payout eBay seller profit calculator with Final Value Fee calculation Amazon FBA profit calculator including fuel and logistics surcharge Poshmark fee calculator with $2.95 vs 20% comparison Mercari fee calculator with 10% flat fee calculation Depop fee calculator showing 0% seller fees Vinted fee calculator with buyer protection fee analysis Transparent formulas and variable explanations Rates verified from official seller fee schedules
What makes it different	No data collection or server storage Uses standard medical calculation methods Honest about limitations and accuracy No aggressive marketing tactics	Every fee itemized with true net payout and margin shown All calculations run client-side in browser with instant and private results Rates verified against official platform fee schedules No sign-up, no data collection, no paywalls Industry-standard formulas with transparent calculations
Community votes	0	0
DR (Domain Rating by Ahrefs)	15 no change since last check	Not checked yet no change since last check
Trust Flow (Majestic)	20	0
Citation Flow (Majestic)	9	0
Referring domains (Majestic)	77	0

6 details filled in for both companies.

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