Made by a working BCBA · Free

A visual timer for sessions and visual learners.

Pick a duration. Pick a visual. Run it. Made for BCBAs and RBTs who need a reliable timer mid-session — no subscription, no login, no ads.

02:00

Set the timer

Duration

MIN

Visual (what the timer looks like)

For sessions
For kids — fills in as time runs out, ready to trace when done

Sound

Interval prompts (a soft double-chime repeats while the timer runs)

Your interval prompter — for DRO, momentary time sampling, token delivery, and self-monitoring. Set it and let the chime cue you, hands-free.

Use with Siri — voice-trigger a timer mid-session

One-time setup. After that, say "Hey Siri, two-minute moon timer" from anywhere — your locked phone, your watch, your car, mid-session.

  1. Open the Shortcuts app on your iPhone or iPad.
  2. Tap the + in the top right → tap Add Action.
  3. Search for Open URL and tap it.
  4. Paste one of the URLs below into the URL field.
  5. Tap the down-arrow at the top → Add to Siri → record your phrase.

Preset URLs (tap to copy):

  • "Three minute moon timer"
  • "Two minute heart timer"
  • "Five minute star timer"
  • "Ten minute sun timer"
  • "One minute session timer"

Tip: install the timer to your Home Screen first (Safari → Share → Add to Home Screen) so Siri opens it in standalone mode without a Safari tab in the way.

FROM THE SAME LAB

Momentum is the free sibling of a whole therapy classroom.

The Master EI Class Kit brings visual schedules, token boards, FCT supports, calming tools, and more — built session-tested by the same BCBA.

See the Class Kit →

This is a clinical tool, not medical advice. Use of this timer is at your own discretion. It is not a substitute for clinical judgment, supervision, or behavior-analytic decision-making.

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