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Yes! All calculators, workout programs, and tracking tools are 100% free. We're supported by ads.
All your data is stored locally in your browser (IndexedDB). We never send your personal fitness data to our servers.
Yes! ttrening.com is a Progressive Web App (PWA). Install it on your device and use it without internet.
Go to Settings → Export Backup to download a JSON file with all your data. You can restore it anytime.
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