CHA1K
Features

Everything you need in the work window

CHA1K is built around counting, timing, organizing people you work with, and keeping identifying information off the screen, without a cloud account.

Measurement

Frequency, duration, and interval

Record the counters and timers professionals use every day, with results tied to a clear work session.

  • Frequency: tap to record; reports count and rate per minute
  • Duration: start/stop per episode; total time, episode count, mean length, percent of session
  • Interval: partial, whole, or momentary scoring across fixed intervals
  • Definition field per counter so a second person scores the same way
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Sessions

Bound every figure to a session

Start and end a session per person with live elapsed time, running totals, and a review before you file the record.

  • Baseline-subtracted results so each session reports only its own window
  • Haptic cues at interval boundaries, so you do not need to watch the screen
  • Live Activity on Lock Screen and Dynamic Island while a session runs
  • End-session review, notes, and history filterable by person
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Organization

People, programs, and presets

Set up once, reuse across your list, and keep definitions separate from live counts.

  • People as first-class records with program notes
  • Counter templates: save a set and apply it to anyone
  • Copy a program from one person to another without naming a template
  • Session presets for a setup you can reload for the day
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De-identification

Keep names off the screen

Tools designed for walking into a shared space without flashing a full name on the device.

  • One-tap name codes: the full name never reaches disk
  • Discreet mode masks stored names to codes at display time
  • Colour labels to tell people apart without a name
  • Identifier warnings and a privacy check across notes and definitions
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Security

Encrypted on the device

Everything stays on the phone by default: AES-GCM at rest, excluded from backups, with optional locks when you need them.

  • Optional Face ID / Touch ID app lock with auto-lock delay
  • Optional passphrase protection that wraps the encryption key
  • Privacy shield over the App Switcher snapshot
  • Export session CSV, totals CSV, full JSON backup, and activity-log CSV
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Apple Watch

Collect from the wrist

Use the watch during sessions with the phone as source of truth, including when you step out of range.

  • Actions queue in an encrypted file and sync when the phone reappears
  • Every payload sealed with a shared link key
  • Pairing requires the phone to be reachable and unlocked
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See it on your iPhone

Download CHA1K when you are ready to count and time in session.

Download on the App Store