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Strata vs Known

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

Strata compared with Known
Detail StrataKnown logo Known
What it doesSee what is taking up space on your Mac, and clear it in a way you can undo. Snap the receipt. Nothing to type.
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelPaid Freemium
PricingFree version available forever with viewing only. Strata Pro Launch price $5 once (for first 200 buyers), then $9.99. No subscription, one-time purchase for all Macs you own. Free plan: no card or account, first 300 items watched daily, recall alerts from CPSC, FDA, USDA, NHTSA, return and warranty reminders, CSV export and daily backup. Plus: $39.99/year or $3.99/month with 14-day free trial, unlimited items, PDF insurance report and AI claim letters. Plus Forever: $59.
Key features
  • Space Map: visualize entire drive at true scale
  • App uninstaller with leftover cleanup
  • Junk file cleanup and optimization
  • Duplicate file finder and search
  • AI Data Sweeper for AI models
  • System resource monitor
  • Reversible removal with Put Back
  • Full-volume scan in under one minute
  • Photograph receipts to automatically extract items
  • Return window calculations based on store policy and purchase date
  • Warranty tracking with renewal reminders
  • No account required; optional sign-in link for device sync
  • Vehicle recall tracking via VIN
  • CSV export and daily backup of item list
  • Expiry date estimates with transparency rules
  • PDF insurance reports and AI claim letters
What makes it different
  • Measurements of real files, not estimates.
  • No account required to start using the app
  • Recall alerts remain free at all pricing tiers
  • Independent company with no ads, brand partnerships or data selling
  • One-time payment option with no subscription renewal
  • Support response within one business day
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)15 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)130
Citation Flow (Majestic)260
Referring domains (Majestic)290

5 details filled in for both companies.

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