Period Tools vs Canopio

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 Canopio
Detail	Period Tools	Canopio
What it does	Free, accurate cycle and period predictor	Etsy fee calculator showing true profit after all fees including Offsite Ads
Stage	Startup	Startup
Founded	2026	2026
Based in	Not given	JP
Pricing model	Freemium	Freemium
Pricing	All calculators and guides are free. Period Tools Pro (optional): $4.99/month or $19.99/year.	Free: one-order calculator and listing score. Listing rewrite $2.99 for 10 rewrites or $9.99 for 40. Shop Audit $9.90 once with 14-day refund.
Key features	Predicts next 6 periods Calculates ovulation day Identifies fertile window Private on-device tracking Cloud sync for Pro subscribers No signup required	Free single-order fee calculator with transaction, processing, listing, and Offsite Ads costs Free listing score (0–100) based on title, tags, and description AI listing rewrites with title, 13 tags, and description generation Shop Audit with live listings ranked worst-first by margin Suggested prices on thin or losing margin rows Pricing Bible and 1,200-row matrix Sold-order backtest from Etsy history Calculates 6.5% transaction fee on item plus shipping Supports UK and Germany payment processing presets
What makes it different	No data collection or server storage Uses standard medical calculation methods Honest about limitations and accuracy No aggressive marketing tactics	Calculates 6.5% fee on total including shipping, not item price alone One-person operation with direct email support and no templates All free tools run locally in browser with no data upload No subscription; all paid products are one-time purchases
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	21
Referring domains (Majestic)	77	10

7 details filled in for both companies.

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