Halftab

Know what's active.
Know what's left.

Halftab is a calm dose tracker for ADHD medication. Log half a tab in two taps, watch each dose peak and fade, and always see what remains of today's prescription.

Coming soon to the App Store

No account. No ads. Your data stays on your device and in your own iCloud.

Halftab rings view showing three doses on a 24-hour clock Halftab log sheet with a half-tab selected Halftab sun arc view

Split tabs

Quarter, half, three-quarters, or one and a half. The milligrams follow, so your daily total is always right.

See what's active

Every dose is a ring on a 24-hour clock, or a band on a sun arc that follows the day from sunrise to sunset.

Know what's left

Enter your prescription once. Halftab tracks prescribed, taken, and remaining in milligrams and tabs.

Every ADHD medication

Thirty-eight products with every strength and illustrated pill artwork, from Adderall to Strattera.

Estimated timing

Optional estimates for when a dose kicks in, wears off, and clears enough to sleep.

Private by design

No sign-up, no analytics, no server. Delete everything with one tap.

Free to start. Plus when you want more.

Free
$0
  • One prescription
  • Unlimited dose logging, split tabs included
  • Rings timeline
  • Daily totals: prescribed, taken, remaining
  • History calendar
  • Private iCloud backup
Halftab Plus 7-day free trial
$4.99/month
or $29.99/year, about $2.50 a month
  • Everything in Free
  • Unlimited prescriptions
  • Sun arc timeline
  • Timing estimates: kick-in, wear-off, sleep
  • Dose reminders
  • Dark mode

Plus is an auto-renewing subscription billed through your Apple ID. Cancel anytime in Settings. Your logged data is never deleted, on any plan.

Halftab is a logging tool, not medical advice. Timing estimates are approximations for typical release profiles and vary by person. Take medication only as prescribed by your clinician.