CHA1K
Use cases

Built for professionals who count and time

CHA1K suits anyone who needs reliable counters, timers, interval tools, and on-device security during focused work, without a cloud account.

CHA1K first-run question asking what your work is, with five practitioner roles to choose from
ABA therapy

Session measurement for behavior data

Frequency, duration, and interval tools for RBTs, BCaBAs, and BCBAs, with discreet labels and export for graphing or supervision.

  • Session-bound rates and interval percentages
  • Name codes and discreet mode in shared spaces
  • A password-protected PDF report or activity-log CSV export when the session ends

Read the ABA use case

CHA1K ABA practitioner starter setup with a frequency counter and duration timer for target behavior
Educators and special education

Classroom tallies without the distraction

Track on-task timing, participation counts, and interval checks while keeping student identity coded on the screen.

  • Quick frequency taps during instruction
  • Duration and interval tools for structured observation
  • Discreet codes and colour labels in shared classrooms
CHA1K educator starter setup with a participation counter and on-task time tracked together
Speech, OT, and related therapy

Trial counts and target timing

Record trials, time how long a target lasts, and keep session notes without putting a full name on the lock screen.

  • Frequency for trials and prompts
  • Duration for engagement or skill episodes
  • On-device encryption and optional app lock
CHA1K speech and OT starter setup with a correct-trial counter and engagement time tracked live
Research and lab observation

Structured windows, clean export

Run observation windows with consistent counters and timers, then export a password-protected PDF report or an activity-log CSV for analysis. Nothing syncs to a CHA1K cloud by default.

  • Clear start and end for each observation session
  • Operational definitions per counter
  • Exports that leave the app only when you choose
CHA1K research starter setup with an operational-definition counter and an observation window timer
Coaching and athletic training

Reps, work, and rest from the wrist

Count reps, time work and rest intervals, and keep collecting on Apple Watch when you step away from the phone.

  • Frequency and duration for sets and drills
  • Interval cues with haptics
  • Encrypted Watch collection, including offline queues
CHA1K coaching starter setup with a reps counter and countdown work and rest intervals

Find your workflow

Explore features, or download and try a session on your iPhone.

See features Download on the App Store