Your Window
A weight range grounded in the Diabetes Prevention Program research — a first milestone at 5% of your starting weight, a goal at 7%, paced week by week to your retest date.
The calm prediabetes companion
Know your numbers.
Your real number arrives Sep 24
Know your numbers.
Run your Ninety Loop.
You got a lab number at your physical and a “let’s check again in a few months.” Dulceo turns that moment into a plan: see where your A1C sits on the reference ranges published by the American Diabetes Association, get a research-informed weight and activity target, and count down to your retest — every 90 days, one Loop at a time.
No hardware. No coaching calls. No calorie counting. No account.
9:41●●● ⌁ ▮
dulceo
Loop 2
Prediabetes range
80days to retest
This weekon pace for your Window
−1.6 lb
Plates today2.5 of 3 · dinner open
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What’s inside
Small, steady, evidence-aligned
The Plate Check
Meals are three quick questions: fiber first? solid protein? light on refined carbs? That’s the whole log — no food database, and never a calorie count.
✓ Fiber
✓ Protein
— Light carbs
Labs, in context
Your A1C and fasting glucose history on the reference bands published by the American Diabetes Association — education, not a diagnosis.
Reference ranges published by the ADA
The doctor PDF
One page with your labs, weight trend and plate averages — made to hand to your doctor at the follow-up.
Reminders that respect you
A Monday plan, an optional Sunday weigh-in nudge, and a heads-up when your retest window opens. Everything on your phone, everything optional.
Mon · planSun · weigh-inDay 80 · retest
Private by architecture
No account, no cloud, no analytics. Dulceo has no servers — your health data never leaves your phone. That isn’t a policy promise; it’s how the app is built.
No accountNo cloudNo analyticsNo servers
In the Diabetes Prevention Program study, people who lost 5–7% of body weight and got ~150 minutes of weekly activity reduced their risk of developing type 2 diabetes by 58% (71% for adults over 60). Population-level research — your journey is your own, and your clinician leads it.
The signature mechanic
The Ninety Loop
Blood sugar wellness has a natural rhythm: your A1C reflects roughly three months, so retesting every ~90 days is the common cadence. Dulceo makes that rhythm visible — a countdown on your home screen, a reminder when the retest window opens, and a fresh Loop the moment your new number arrives.
See it in motion
The two-minute walkthrough
Free tools
Start with the calculators
The same published formulas the app uses — free, instant, in your browser. Nothing you type here is stored or sent anywhere.
A1C ↔ eAG converter→
Turn an A1C percentage into the average glucose it reflects — and back.
Prediabetes Risk Test→
Seven questions adapted from the CDC test. A score, not a diagnosis.
Your 5–7% Window→
The Diabetes Prevention Program target, sized to your numbers.
Retest date planner→
Pick your last lab date and plan the next draw.
Pricing
A fraction of the sensor route
Continuous glucose programs run $600–$2,400 a year. Dulceo is built for the lab-and-retest rhythm instead.
Free
$0
Your zone on the ADA bands, weight and lab logging, the Loop countdown, Plate Check.
Pro Annual
$49.99/year
The full Window plan and projection, meal frameworks, food lookup, doctor PDF, waist & blood pressure fields.
Pro Monthly
$7.99/month
Everything in Pro, month by month.
Lifetime
$99.99 once
Every Pro feature, forever. One purchase, no subscription.
Dulceo for iPhone
Available now on the App Store. Free to download, with an optional Pro plan for the full Window.
iOS 17 or later · iPhone