PlayTools vs The Body Index

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

PlayTools compared with The Body Index
Detail	PlayTools	The Body Index
What it does	Free online calculators, converters, and developer tools that run in your browser	Free body-metric calculators with no accounts or ads in results
Stage	Startup	Not given
Founded	2025	Not given
Based in	Not given	Not given
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	68 free tools across finance, development, and utilities Loan repayment and affordability calculators with total interest calculations Currency converter with 30 world currencies and live exchange rates JSON formatter, validator, and minifier with syntax highlighting Date and time tools including age calculator and timezone converter Runs entirely in browser with no server uploads Works offline after initial page load	Open source formulas on GitHub
What makes it different	No account or sign-up required Runs entirely client-side in your browser with no data sent to servers All tools are completely free with no usage limits Works offline after initial page load Privacy-first approach with no data collection or transmission	Calculators for metrics beyond BMI that major sites haven't adopted Open source formulas validated against peer-reviewed research papers All code available under MIT license for verification and reuse Free embeddable widgets with attribution for other websites
Community votes	0	0
DR (Domain Rating by Ahrefs)	7 +1 (up) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	3	0
Citation Flow (Majestic)	35	0
Referring domains (Majestic)	6	0

4 details filled in for both companies.