Canalith
Canalith
Vertigo diary for iPhone and Apple Watch
Severity is one drag on the dial. Canalith adds the barometric pressure and weather at that moment, keeps the diary, guides the exercise your clinician prescribed, and prints a one-page report for your next appointment.
Move your cursor. The sky in the window follows a sample month.
Each part of Canalith is a painted room with a working instrument in it. The interface is the picture.
The hold countdown is the light in the window, and the figure on the bed moves into each position as you do. A haptic and a spoken cue mark every change, so you can keep your eyes closed and your head where the maneuver needs it.
Timed to the hold lengths in the published protocols, with left and right ear variants.
Falling barometric pressure is a common trigger for vestibular migraine and a frequent companion to Meniere's. Each time you log an episode, Canalith asks your phone where it is, once, and writes down the pressure, its trend, and the weather. After a few weeks the Patterns room tells you plainly what share of your attacks began in low or falling pressure.
Pressure in hPa, rising or falling, temperature, humidity and conditions. Optionally, last night's sleep from Health.
On Apple Watch, severity is the crown and symptoms are four taps. The phone attaches the weather when the episode arrives.
Canalith reports frequencies in your own log. It does not diagnose and it does not guess at causes.
Repositioning maneuvers are shown only after you confirm a clinician prescribed one for you and told you which. Canalith then walks you through it at the hold times in the published protocols, with left and right ear variants, a moving figure, a countdown, haptics and a voice.
Canalith repositioning for posterior canal BPPV. Epley 1992; guided per the 2017 AAO-HNSF clinical practice guideline.
Liberatory maneuver for posterior canal BPPV. Semont, Freyss and Vitte 1988.
Habituation exercise, repeated in sets as prescribed. Brandt and Daroff 1980.
An alternative to Epley, when a clinician recommends it. Foster and colleagues 2012.
Canalith is a diary and a guide, not a medical device. It does not diagnose or treat vertigo. Stop and rest if symptoms worsen, and contact your clinician if the vertigo changes character or comes with hearing loss, weakness, double vision or trouble speaking.
Frequency, average severity, what accompanied each episode, the pressure at onset, medication noted, and the exercises you performed. As a PDF for the appointment or a CSV for anyone who wants the raw rows.
There is no account and no server. Episodes live in the iPhone's own storage and on the paired watch. WeatherKit requests are made by Apple's framework on your behalf and carry no identifier. The App Store privacy label reads Data Not Collected.
The diary, the watch logging, the CSV and a PDF of your last thirty episodes are free, forever. Pro adds the parts that took care to build.
Or $19.99 a year with a 7-day free trial.
Requires iOS 26. Apple Watch optional, watchOS 26.
