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THE FEUTEX TOOLKIT

Habit Streak Analyzer

Calculate current and longest daily streaks from a list of completion dates.

Planning workspace● Runs in your browser
01 Your input
02 Your result

Made for real tasks

  • Review a reading, practice or exercise log without creating an account.
Explore step-by-step workflows →

How to use this tool

  1. Choose your files or enter the requested values.
  2. Review the scope and load the example where available.
  3. Run the tool, inspect the result and download or copy it.

Try this example

{"dates": "2026-10-15\n2026-10-16\n2026-10-18", "asOf": "2026-10-18"}

Accuracy and scope

Calendar dates only, interpreted as UTC days. Current streak may end today or yesterday. Duplicate dates count once; future dates are rejected. Up to 10,000 dates.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.