Period Tools vs Gainly

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 Gainly
Detail	Period Tools	Gainly
What it does	Free, accurate cycle and period predictor	Free calculators for Indian financial planning, built on official rates and rules
Stage	Startup	Not given
Founded	2026	Not given
Based in	Not given	IN
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	SIP calculator for monthly investment growth EMI calculator for loans Income tax calculator for new and old regime comparison Retirement and NPS calculators GST calculator Formulas shown with worked examples for verification Support for multiple languages: English, Gujarati and Hindi Updated with current tax slabs, rates and government rules
What makes it different	No data collection or server storage Uses standard medical calculation methods Honest about limitations and accuracy No aggressive marketing tactics	Built on the same methods used by banks, India Post and the Income Tax Department Every formula is shown with a worked example so you can verify the math Completely free with no sign-up or personal information required Results are shareable via links that preserve your numbers
Community votes	0	0
DR (Domain Rating by Ahrefs)	15 no change since last check	2 no change since last check
Trust Flow (Majestic)	20	0
Citation Flow (Majestic)	9	0
Referring domains (Majestic)	77	0

4 details filled in for both companies.