Small, sharp tools for people who run social accounts for a living.
Kadenzo is a slow-growing collection of free utilities for social media managers, creators, and agencies. Everything runs in your browser on your own numbers — no login, no scraped data, no “start your free trial” wall between you and the answer.
Tools
Engagement Rate Calculator
Platform-native metrics, the right denominator, multi-post averaging — and a methodology line you can paste into the report.
UTM Builder
One link or a whole campaign set — consistent vocabulary, GA4 channel preview, CSV export.
Best Time to Postcoming soon
Posting-time guidance built on real scheduling data.
How this site works
- Your input only. Every tool works on numbers you type or files you choose — nothing here fetches, scrapes, or monitors other accounts.
- One good page per tool. Each tool ships with the explanation, examples, and benchmarks needed to actually use the output — not a thin widget farm.
- Built slowly.New tools are added when they’re genuinely useful, not to fill a sitemap.