fuelOS
Food, supplements, and how you feel

Everything you put in your body. One place.

Snap a photo or scan a barcode. The card writes itself.

Whole-body intake
Meals, pills, and your daily check-in
Down to the compound
Macros, micros, and the compounds underneath
Beside how you feel
See how intake lines up with your energy and focus
01Capture

Capture in one gesture.

Point the camera, talk, or scan a barcode. A meal, a supplement, whatever you take. The card appears and fills itself in as it reads. You never touch a form.

PHOTOSnap the plate.
VOICEJust say it.
SCANRead the barcode.
ANALYZING1:15 PM
Grilled Herb Chicken Bowl
Wood-fired chicken, roasted sweet potato, tahini.
0g0g0g
0
KCAL
MICRONUTRIENTS + BIOACTIVE
Curcumin ~38 mgBeta-glucans ~2.1 gOmega-3 ~0.8 g
CreatineSUPPLEMENT
5 g · 9:02 AM
+LOGGED
BPC-157PEPTIDE
250 mcg · 9:05 AM
+LOGGED
NMNENHANCEMENT
500 mg · 9:06 AM
+LOGGED
THE STACK · TODAY3 / 5 TAKEN
Creatine
5 g · morning
LOGGED
Omega-3
2 caps · with food
LOGGED
Vitamin D3 + K2
1 cap · morning
LOGGED
Magnesium glycinate
400 mg · night
REMIND
Whey protein
1 scoop · post-workout
REMIND
02The Stack

Your whole stack.
One view.

Your whole routine, on the same timeline as your food. Point the camera at the bottle to add it. One tap from the Home Screen logs a dose, and a quiet reminder cues the next.

03Down to the compound

Most apps stop at calories. fuelOS doesn't.

Macros first. Then 24 micronutrients. Then the bioactives almost no one tracks, like curcumin, beta-glucans, and polyphenols. Detail you'd normally hunt for, read straight from the photo.

GRILLED HERB CHICKEN BOWLREADING
MACROS · OF DAILY GOAL
Protein
0 / 80 g
Carbs
0 / 200 g
Fat
0 / 60 g
MOST APPS STOP HERE
MICRONUTRIENTS · 24 TRACKED
Iron~4 mg
Magnesium~38 mg
Zinc~2 mg
Vitamin B12~1.2 µg
Folate~60 µg
Potassium~480 mg
Selenium~18 µg
Vitamin D~2 µg
Choline~90 mg
Omega-3~0.8 g
+14 more
BIOACTIVE COMPOUNDS · RARE
Curcumin~38 mg
from the herb rub
Beta-carotene~6.2 mg
from the sweet potato
Sesamin~14 mg
from the tahini
Polyphenols~120 mg
from the herbs
CurcuminBeta-glucansOmega-3MagnesiumCreatineVitamin DPolyphenolsFiberLuteinCholineZincSeleniumProbioticsElectrolytesCollagenQuercetinIronFolatePotassiumB12
CurcuminBeta-glucansOmega-3MagnesiumCreatineVitamin DPolyphenolsFiberLuteinCholineZincSeleniumProbioticsElectrolytesCollagenQuercetinIronFolatePotassiumB12
04How you feel

The night you slept well had a reason.
Your record holds what it was.

Everything you take sits on the same timeline as how you sleep and feel. Look at the two together and the quiet patterns surface.

check-in · your inputNOW
sleep · Apple HealthSOON
HRV · Apple HealthSOON
recovery · WHOOPSOON

Patterns, not predictions. Every link names the nights behind it.

YOUR LAST 14 DAYSLEARNING
Example shown · association, not a prediction
TOOK
FELT
↑ longer
TYPICAL
NIGHT 8 · MAGNESIUM
NIGHT 1TONIGHT
NIGHTS LOGGED
0 / 14
complete
MAGNESIUM NIGHTS
4
of 14
LINKED TO YOUR SLEEPEXAMPLE
Illustrative — your own links form as you log.
Magnesium
n = 11 / 14
pattern forming
longer
Creatine
n = 4 / 14
no clear link
On nights you took magnesium, your sleep ran ~0 min longer.
Ranked by how strongly each tracks with your sleep · sleep links arrive when Apple Health connects.
05Everywhere

Carry it everywhere.

01
Home Screen widget
Quick-log without opening the app.
02
Siri & Shortcuts
“Log creatine.” Done.
03
Apple Health
Meals and macros sync to Apple Health.
04
Spotlight
Start a log from search.
06Reviews

Built for people who count what goes in.

★★★★★

I've tried Yazio, Lifesum, Cal AI, SnapCalorie, MyFitnessPal… this one is easily the best. The UI is beautiful and the AI is more accurate.

CHRONICALLYCURIOUS
★★★★★

Intuitive design and features that let me tailor it to my goals. Quick and easy to actually keep up with.

LILLIANZW
★★★★★

It makes health and wellness feel simple, supportive, and realistic.

LET US HAVE OUR PICTURES
FREE TO START
$0
  • A few AI meal scans a day
  • Re-logging a past meal is always free
  • The Stack and daily check-in
fuelOS PRO
Everything, unlimited
  • Unlimited logging
  • Micronutrient and bioactive estimates
  • Analytics dashboard
  • Apple Health and data export, anytime

Everything you put in your body. One place.

Free on iOS. Start today.

Download on iOS