Period Tools vs Etsy Tariff Calculator

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 Etsy Tariff Calculator
Detail	Period Tools	Etsy Tariff Calculator
What it does	Free, accurate cycle and period predictor	Free browser-based calculator showing every 2026 Etsy fee on a listing, including DDP tariff charges
Stage	Startup	Not given
Founded	2026	Not given
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	Line-by-line breakdown of all 2026 Etsy fees Separate DDP tariff charge line 15% Etsy fee on tariff charge calculated Offsite Ads fee options (15% or 12%) Real-time updates as you type All calculations run in browser Chrome extension version available
What makes it different	No data collection or server storage Uses standard medical calculation methods Honest about limitations and accuracy No aggressive marketing tactics	No data is sent to servers; all processing happens in your browser Maintained and checked against published Etsy policy Same engine powers both web version and Chrome extension
Community votes	0	0
DR (Domain Rating by Ahrefs)	15 no change since last check	4 no change since last check
Trust Flow (Majestic)	20	9
Citation Flow (Majestic)	9	18
Referring domains (Majestic)	77	6

4 details filled in for both companies.