Three steps, about ten minutes including the first scan. You can do this in production or in a sandbox, and nothing you install sends anything out of your org.
Pick the org you want to scan. Choose Install for Admins Only when Salesforce asks, you will grant access with the permission set in the next step.
Install UntanglrVersion 0.8.0.1.
In Setup, open Permission Sets, pick Untanglr Admin, and assign it to yourself and to anyone else who should run scans.
Open the Untanglr app from the App Launcher, go to Flow Scanner and press Run Scan. On a busy org the first pass takes a few minutes, later ones are faster because only what changed is read again.
WHAT YOU GET FOR FREE
One Flow scan a day, your most overloaded objects, up to three recommendations, and a first look at where your fields are used.
WHAT PREMIUM ADDS
Every result unblurred, all the recommendations, the PDF exports, and the scheduled scans that keep it current on its own. Compare the plans
Generate your key in the dashboard, then paste it into Settings inside the app. It binds to that org and runs for a year.
Scheduled scans, report branding, the deep scan, and rolling out across several client orgs.
Open the advanced guide