Performance runs on glucose.
A1C reads your glucose every minute and tells you what to change before the next session.
Thu, Sep 10
Spike at 8:52 AM+38 mg/dL
LinX CGM15 days, reads every minutePaired
SALLYYour lunch peaked at 178 and dropped 60 points. That rebound is your 3 pm crash.
Start freePoint your camera at the code.
Health
Watch
Health ConnectWearables connect through Apple Health on iOS or Health Connect on Android. Trademarks belong to their owners.
The people behind the curves
Road, water, track, and everything in between. Illustrative photography, sample readings.
Don't Spike Challenge
Are you going to make it?
Wear the LinX sensor, keep your glucose calm, and finish with your allowance intact.
$1,000
Awarded to the first 5 finishers
15
days of continuous wear
2
spikes allowed, only 1 moderate
Challenge kit Rp 1.500.000. Full rules, safety exclusions and the prize terms are on the challenge page.
Five signals, one picture
Glucose, sleep, steps, vitals and your surroundings, read together instead of one at a time.
The whole day, minute by minute
Every reading on one curve, spikes marked, and the meal behind each one. Time in range, spikes, estimated HbA1c and your glucose score on a single screen.
Your office snack kept you high for 96 minutes. Add protein to it tomorrow and see if that halves.Your food, your response
Log a meal by name and Sally remembers what it did to you. Not a database average. Your curve.
LinX CGMApple Health (iOS)Apple WatchGarminWhoopOuraAmazfitApple Health (iOS)Health Connect (Android)Nothing moves in isolation
Heat, a short night, a hard session, a late meeting. A1C pulls in the wearables and apps you already wear, so a 3 pm crash stops being a mystery.
SALLY / 05Sally reads it back to you
A coach that knows your sport, your schedule and your last fifteen days. Not a chatbot with a search bar.
Ask why, get your own numbers back
Ask why the afternoon fell apart. Sally answers from your readings, not from general advice.
Your lunch hit 178 and dropped 60 points in 40 minutes. That rebound is the crash.Sally speaks first
Reminders, daily summaries and nudges that arrive before the spike, without you having to ask.
Knows your food, in two languages
Nasi goreng, martabak, oat milk lattes. Sally answers in Bahasa or English, with the food you actually eat.
Plug Sally into your own stack
Typed skills that read live biomarkers, ask Sally a clinical question, or parse a lab panel, from any agent that speaks MCP or HTTP.
Open Sally Console →Glucose, all the way down
Seven screens behind the one number.
Your office snack kept you high for 96 minutes. Add protein to it tomorrow and see if that halves.under 55Poor
55Good
70Optimal
85
Range and steadiness are strong. Flatten one afternoon spike and you win back most of the missing points.your ideal range
Friday and Wednesday pulled this sensor down. Every other day held above 90%, so start with what those two had in common.SCREEN / DAY OVERVIEW / 001
Day overview
One curve for the whole day, with every spike marked.
Your data does not leave your side
We never sell it, we encrypt it in transit and at rest, and you can export or delete all of it from inside the app.
Notes from people mid-season
Six members, six reasons they started.
"Ate one before every long run for years because someone told me to back in 2019. Watched it go up and then straight back down about 40 minutes in, which is exactly when I always started feeling rough. Moved it to after the warm up instead. Completely different run. Still not sure why nobody mentions this."
"SIN to LHR to SFO on repeat. I mostly wanted to know whether it's worth training the day after a long haul. Usually no, and now I've got something to point at instead of just feeling lazy about it. Wish the jet lag side was more built out tbh."
"Heavy squat day and it's still dragging my numbers around at 10pm. I'd been eating my biggest meal straight after training because that's what you do. Moved it earlier. That's the whole change."
"No race, no goal weight. I'm 52 and I'd just like to know what's actually going on in there. Sally is good at not making me feel stupid about it, which I wasn't expecting. Biggest thing so far is a walk after dinner. Sounds like nothing. I didn't believe it until I watched it happen."
Green juice, acai bowls, oat milk lattes, the whole thing. Took me a while to accept that my best mornings were the ones wrecking my afternoon. I still have the oat milk latte sometimes, I just know what it costs now.
NadiaMarketing lead, wellness-firstFive mornings a week and I'd fall apart mid-session for no reason I could see. It was the pre-workout meal, which I'd been eating the same way since my thirties. Took about two weeks of looking at it to figure out which ones were the problem.
Marcus46, trains before the kids wake upWhatever you are training for
Cyclists, runners, lifters, founders on a red-eye. Same sensor, same coach.
Point your camera at the code.A1C Insights is free to start, on iOS and Android.
Frequently asked questions
Everything worth knowing before you start with A1C and Sally.
No. A1C is built for prevention and performance. Most of our members aren't sick, they just want steady energy, sharper focus and a longer healthy runway. If that's you, this is for you.
No. Application takes about 30 seconds. A tiny filament sits just under the skin, and most people don't feel it once it's on. The sensor is waterproof, so you can shower, swim, and train normally.
A1C reads data from any CGM with Apple Health integration on iOS, including LinX. For wearables, A1C works with Apple Watch, Garmin, Whoop, Oura Ring, Amazfit, and other wearables that support Apple Health (iOS) or Google Health Connect (Android).
Very little. The sensor reads your glucose automatically every few minutes, so there's nothing to do. Log a meal or a moment of stress when it's convenient, and spend a few minutes a day reviewing what Sally finds.
Context. We read your glucose alongside the things that move it, food, sleep, stress, and your schedule. Sally connects them and suggests changes that fit your real life. We're built for prevention and performance, not disease management.
About 15 days. We send the next one ahead of time, so you're never without a reading between sensors.
Yes. Your glucose shows up in real time the moment the sensor connects. Sally starts spotting patterns once she has enough data, usually within the first few days.