Scan, verdict & share
Barcode, label photo, or whole food — a clear call in a second, shareable as a card.
Evidence-honest food & nutrition companion
Susta — make every bite count.
Built for people on GLP-1 medication — trying to lose fat without losing muscle.
Scan any food for a clear Buy / Limit / Avoid verdict tuned to that goal. Every answer carries an evidence grade — how sure the science actually is. If it can't be cited, Susta says so instead of bluffing.
Also tuned for blood sugar, keto, longevity, and everyday healthy eating.
✓ Free — no card, no catch, full data export
✓ Works offline, on-device
✓ No ads, no analytics, no selling data
✓
Buy
🐟 Wild Salmon
120–170 g · 2–3×/week
Great fit
- • Protein-dense — protects muscle on a GLP-1.
- • Single-ingredient whole food — build meals around it.
💡 Why protein first?
EVIDENCE · Strongest · A
confidence: high
See it
The verdict, and how sure it is.
Screenshot pending
Screenshot pending
Screenshot pending
The gap
Scanners judge your food, then forget it.
Most give a score and walk away, on one formula that can't tell a diabetic from a marathoner. Susta judges for your goal — and shows how sure it is.
Why I built it
I built this for myself.
Three questions came up every day with no good answer: what do I cook tonight, what do I buy at the grocery, and is this actually healthy or am I kidding myself.
And because I shopped without a plan, food expired in the fridge or was never used at all. Wasted money, wasted food.
So I built the thing I wanted to consult. This didn't start as a business.
Jun, founder
What it does
The whole loop.
Learn the why
Every verdict opens a short, cited lesson — sugar, protein, blood sugar, fasting.
Cook your cuisine
Say what you're craving. The dish keeps its identity; only the glucose-spiking base is swapped.
A coach that won't bluff
Ask "can I eat this?" or "what is GLP-1?" Every answer traces to the cited engine, or it refuses.
Pantry & shopping list
What you have on hand; what a recipe still needs goes on the shopping list, grouped by dish.
Your record, your property
Weight, muscle, glucose and every food you log build a private history — exportable any time.
Why it's different
The grade is how sure the science is — not a vibe.
Susta separates two things every other app blurs: the verdict (what to eat for your goal) and the evidence grade (how strong the science is, A to D). A call resting on preference rather than data is badged a personal standard.
The grade is how sure the science is
A is a randomised trial; D is contested or thin. It grades the evidence, never how "good" the food is.
Culturally native
Keeps your cuisine intact, swapping only what spikes you — adobo over cauliflower rice, explained.
Private by default
Verdicts compute on your device; nothing syncs unless you turn on backup. No ads, no analytics, no selling data.
How it works
Set your goal. Scan. Understand. Keep going.
1
Tell Susta your goal
GLP-1, blood sugar, keto, longevity, or everyday — every verdict tunes to it.
2
Scan or snap a meal
Barcode, label, whole food, or your plate.
3
Learn & cook
Open the "why," then cook something in your cuisine that fits.
4
Build your record
Log it, track weight and muscle, keep a history you own.
Straight answers
What Susta won't do.
The same honesty the verdicts run on.
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Photo estimates of a plate are approximate, not measured. For real numbers, scan the packaged items.
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No calls on whether food is still safe to eat. Spoilage is a different discipline, and getting it wrong matters more.
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No advice on medication or dosage. That's your doctor's. Susta declines the question rather than answering around it.
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Coverage of local and unpackaged foods is still thin. When a food isn't in the base, Susta says so and offers to learn it.
Free to start
Make the next bite count.
Set your goal, then scan the next thing you eat.