Phaze on Apple Watch, the GLP-1 tracker that actually lives on your wrist.
Most GLP-1 trackers either skip Apple Watch entirely or ship a thin shell of the iPhone app that needs your phone for every action. Phaze on Apple Watch is independent. You can log an injection or oral dose, start a fasting timer, do a daily check-in, log a side effect, and add a weight, all from your wrist. It writes to HealthKit on its own and syncs back when your phone is around. Four complications keep your daily progress on your watch face. This guide covers what it does and how to set it up.
What you can do from your wrist
Phaze on Apple Watch is built around the actions GLP-1 users actually take during the day, the kind of micro-logging that gets skipped when you have to pull out a phone. Each capability below is shipping in the current build, not a roadmap promise.
- 1
Log a dose, injectable or oral
Tap Log Dose, confirm the medication and the date, the entry lands in your weekly cycle ring. Works for Ozempic, Mounjaro, Wegovy, Zepbound, and Rybelsus.
- 2
Daily check-in, mood, energy, hunger
A 20-second tap-through that captures how you actually feel today. Useful for spotting dose-cycle patterns over weeks.
- 3
Side effects with a severity picker
Pick from common GLP-1 effects, set a severity, save. Trends show whether nausea or constipation are climbing or fading.
- 4
Weight entry via Digital Crown
Spin the crown to your scale reading and confirm. Phaze writes a HealthKit body mass entry that the rest of your health stack reads.
- 5
Quick water add
Spin the Digital Crown to add water in increments. Same HealthKit pipe as weight, so MyFitnessPal and other apps see the same total.
- 6
Fasting timer for oral GLP-1
Auto-starts when you log an oral dose. Runs as a live activity until the absorption window completes.
- 7
Daily progress rings
Three rings on the main screen, calories, water, active calories. Glance, do not dig.
- 8
Four complications
Three daily progress complications plus one streak. They sit on your watch face and update on Apple's third-party cadence.
Complications, the part most people miss
Complications are the small Phaze tiles you can place directly on your watch face. Phaze offers four of them. They turn your watch face into a quiet GLP-1 dashboard you glance at, instead of a deep menu you tap into. Pick a watch face that has slots for them and you will see your progress every time you check the time.
On Apple Watch, complications come in fixed shapes and sizes, circular, rectangular, inline, corner. Apple decides what fits where, app developers fill the slots. Most GLP-1 apps either ship one complication or skip them. Phaze ships four because the actions a GLP-1 user wants to glance at are not all the same shape. Calories, water, and active calories want to live next to each other in a single circular tile. A streak is one number, it fits an inline. A daily summary fills the rectangular slot on a Modular Compact face. Picking the right complication for the right slot is the difference between a watch face you actually read and one with a Phaze logo nobody looks at.
Daily Progress, Circular
A three-ring miniature for the circular slot on Modular and Infograph. Your calories, water, and active calories at a glance.
Best on, Modular, Infograph
Daily Progress, Rectangular
A wider rectangular tile that breaks the same three rings out as labelled bars. Best for the Modular Compact face.
Best on, Modular Compact
Daily Progress, Inline
A single-line summary for inline slots on faces like Utility. "3/8 water, 1100/1600 cal" type compact text.
Best on, Utility, California
Streak, Circular
Your current consecutive logging streak in days, with the Phaze flame icon. Strong nudge to keep showing up.
Best on, Modular, Infograph
Independence vs dependence
Most third-party watch apps are tethered, they need your iPhone to do anything useful. Phaze on Apple Watch is built the other way around. The Watch app reads and writes to HealthKit directly, so weight, water, and active calories work even if your iPhone is in another room. Dose logging and side effect logging cache locally in App Group UserDefaults and replay through WatchConnectivity when your iPhone reconnects. The result is that you can finish a workout, log an oral dose, start a fasting window, and review your check-in without ever touching your phone, and nothing gets lost when you do.
For the curious, the underlying pieces are HealthKit for body mass, water, and active calories, App Group UserDefaults for queued dose and check-in events, and WatchConnectivity for the bidirectional replay back to your phone. Engineering details aside, what it means for you is that the Watch is never a dead brick when your phone is in another room.
The practical test is your morning. You wake up, pick up the Watch from a charger, and the phone is still on the nightstand charging. You step on the scale, log the weight from your wrist, the value writes to HealthKit, your scale's companion app sees the same number once your phone wakes up. You take an oral dose while making coffee, the fasting timer starts on your wrist, the countdown follows you to the kitchen. You finish a walk, the active calories tick up on the complication. None of this required a phone, and none of it gets lost when you finally pick the phone up an hour later. That is the contract Phaze on Apple Watch is built to keep.
Fasting timer for oral GLP-1
Oral GLP-1 medications need a strict fasting window to absorb properly. Rybelsus needs at least 30 minutes of empty stomach plus only a small sip of water. Future oral options like the Wegovy pill and orforglipron will land with their own absorption windows. The watch fasting timer starts automatically when you log an oral dose, runs as a live activity on your wrist, and clears the moment the window completes. You do not have to remember the rule, your wrist remembers it for you.
The wrist matters here because the absorption rule is short and easy to break. Walk into the kitchen, pour coffee, ruin the window. With a countdown on your wrist you see the time left at every glance. If you are also a Rybelsus user who travels a lot, the watch timer follows you across time zones without resetting. For more medication-specific guidance check the Taper Coach section, which works in concert with this.
How Phaze on Watch compares to the alternatives
Most GLP-1-specific apps either have no Apple Watch app at all or ship a reminder-only complication. Shotsy has an Apple Watch app focused on dose reminders and shot logging, which is good as far as it goes. Phaze covers more surface, dose logging plus weight, daily check-in, side effect logging, fasting timer, and four complications. The honest take, if your day is purely "log the shot, dismiss the alert," any of these will do. If you want body composition and protein and check-ins and a fasting timer on your wrist, this is the gap Phaze is built for.
| Capability | Phaze | Shotsy | Most others |
|---|---|---|---|
| Dose logging on Watch | Yes | Yes | Rare |
| Weekly reminder | Yes | Yes | Sometimes |
| Weight entry on Watch | Yes | No | No |
| Daily check-in on Watch | Yes | No | No |
| Side effect logging on Watch | Yes | No | No |
| Fasting timer for oral GLP-1 | Yes | No | No |
| Number of complications | Four | Fewer | Zero or one |
| Works without iPhone present | Yes | Partial | Rare |
Comparison reflects shipping behavior at time of writing. Other apps may add capabilities. The point of the table is to give a clear picture today, not to trash any product.
Setup in under two minutes
Install Phaze on iPhone first, the Watch app installs automatically over the air on watchOS 10 or later. Open Phaze on iPhone once so your account and medication are synced across. On Apple Watch, long press your watch face, edit it, and add a Phaze complication to one of the slots. Take your first action, a quick dose log or a daily check-in, and you are set. Anything you log on the watch is in your iPhone history within seconds.
Install Phaze on iPhone
Grab Phaze from the App Store. The Watch app installs over the air automatically once iPhone and Watch are paired on watchOS 10 or later.
Open Phaze on iPhone, set your medication
Open Phaze, pick your GLP-1 medication and dose schedule. This syncs to Watch.
Pick a watch face with complication slots
Modular, Infograph, or any Siri-style face. You want at least one circular slot, and ideally a rectangular and an inline.
Add a Phaze complication
Long press the face, tap Edit, choose a slot, scroll to Phaze, pick the variant you want.
Take your first action
Open Phaze on the watch and log a quick check-in or a water add. The action lands in your iPhone history within seconds. You are set.
From there, the rest of Phaze is iPhone-first, but the Watch keeps logging the small actions for you. If labs and body composition matter to you, see the Lab Tracker and Body Composition pages, both pair well with the Watch flow described above.
Common questions
Each question below is its own short answer page. Tap through to read the answer or browse them all.
- Can I log my Ozempic dose from my Apple Watch?
- Does Apple Watch send a weekly injection reminder?
- What can I do in Phaze on Apple Watch?
- Which complications does Phaze offer?
- Does Phaze need my iPhone to log on the Watch?
- Can I log weight from my Apple Watch?
- Does Apple Watch have a fasting timer for oral GLP-1?
- How does Phaze on Watch compare to Shotsy?
- Which watchOS does Phaze require?
- Can I use Siri to log a dose?
Ready to put GLP-1 tracking on your wrist?
Install Phaze on iPhone, pair with your Apple Watch, place a complication. Log your first dose without ever pulling out your phone.
Looking for the broader Phaze landing page? Back to home.