Estimate, not oracle
The AI suggests a value for each food and each portion. It's clearly labeled as an estimate, and you're free to correct it.
Feature · Nutrition
AI meal photo scan. Calories in a snap.
You eat, you snap a photo, it's logged. ZymFit recognizes the foods on your plate, estimates portions, and calculates calories, protein, carbs, and fat. You confirm — nothing hits the log without your okay.
01The idea
ZymFit's AI photo scan in one sentence.
You point your phone at the plate, the AI spots the visible foods, suggests a portion for each one, and works out the calories and macros — then lets you adjust before saving. Three seconds to shoot, ten seconds to review, and the meal is in your log.
It's one of three ways to log a meal in ZymFit, alongside barcode scan and manual search. Three entry points to the same food log — you pick whichever fits the moment.
02The flow
How it works, step by step.
Four simple steps, from the camera shutter to the entry landing in your log.
- 01
Snap
Open ZymFit, tap the camera icon, and frame your plate from above with decent light. A single photo is enough for a full meal.
- 02
Recognize
The AI identifies the foods on the plate — protein, starch, vegetables, sauce. You see the list of detected foods before any calculation.
- 03
Quantify
A portion estimate is suggested for each food, in grams or in units. You can tweak it in two taps if the portion looks off.
- 04
Confirm
You review, then confirm. Calories, protein, carbs, and fat are added to your meal log. Nothing is saved until you give the green light.
Want to know what's happening under the hood? We wrote a detailed article on how the AI works that walks through image recognition, portion estimation, and why human confirmation stays at the center.
03The output
What the AI actually returns.
Real example. You snap a salmon-rice-broccoli plate. Here's what you see before confirming:
FoodPortionkcalPCF
Grilled salmon150 g31232020
Basmati rice180 g cooked2345511
Steamed broccoli120 g41370
Drizzle of olive oil1 tbsp1190014
Meal total—706405835
Illustrative example. Actual values depend on the photo, detected portions, and the nutrition database used.
Every row is editable: you can bump up the rice portion if the scoop was bigger, remove the oil if it's already counted, or add the slice of bread that wasn't in the shot. If you want to dig deeper into how macros work, we have a hands-on guide on how to calculate your macros when you're starting out.
04The control
Accuracy and confirmation: you stay in charge.
A photographed meal isn't a lab measurement, and ZymFit doesn't pretend otherwise. The goal is to be close enough to steer a trend over weeks — not to replace a precision scale.
Confirmation by default
Nothing enters the log without your green light. You can remove a line, add one, or tweak the grams before saving the meal.
Steer the trend
Over a week, it's the order of magnitude that guides your adjustments. Consistent and close beats perfect days followed by skipped ones.
This approach works well for a weight loss goal, where consistency matters more than absolute precision. If you're working fine-grained though — during a cut, every macro counts —, you can combine photo scan with barcode scan and manual weighing to tighten the measurement.
05Three entry points
When to use AI scan vs barcode vs manual.
No method is better in absolute terms. The right one is whichever fits the meal in front of you.
AI photo scan
When
Plated meal, restaurant dish, brunch, composed plate at home.
Why
A single photo covers several foods at once, and you don't have to name every ingredient.
Barcode scan
When
Packaged grocery items, yogurt, cereal box, protein bar.
Why
Nutrition facts come straight from the label, so values are accurate down to the brand.
Manual search
When
A simple food you already know, an athlete weighing their rice to the gram.
Why
The fastest path when you know what you're eating: three letters and the exact portion.
These three methods live side by side in the same food log, with a single calorie and macro total at the end of the day. For the full picture of what ZymFit offers on nutrition and training, check all ZymFit features.
06The quotas
On which plans: Free, Standard, Pro.
The AI photo scan is available on all three plans, with a quota that scales with how heavily you use it.
Free
3 scans / week
For trying out AI recognition and testing it on a few real meals before committing.
Standard
Popular8 scans / day
The right pace for daily tracking: one per main meal, with room for snacks.
Pro
15 scans / day
For serious users who also scan snacks and want zero friction across every meal.
The full pricing and feature breakdown is on the quotas by plan page. Quotas reset automatically every week or every day depending on the plan.
07Best practices
Limits and best practices.
Three habits to get the most out of the AI photo scan, without asking it for things it can't do.
Clear photo, top-down view
Natural or decent light, framing that shows the whole plate, little shadow on the food. One readable photo beats two missed tries.
One dish at a time
Starter + main + dessert? Take three photos. The AI is more accurate on a well-defined meal than a buffet stacked in the same frame.
Always confirm
Take ten seconds to review the estimated portions before saving. That's where the quality of your tracking gets made.
Your photos stay with you
Images are used only to analyze your meals. You can wipe your history from settings whenever you want.
Available in 5 languages
English, French, Spanish, Portuguese, and German interface. Recognition works on dishes from around the world.
Frequently asked questions
What we get asked most often.
Does the AI recognize every food?
It covers the vast majority of everyday meals — meats, fish, starches, vegetables, fruits, ready meals, desserts. Very local recipes, homemade dishes with hidden ingredients, or heavily stacked combos are sometimes harder to break down. In those cases, manual search takes over without friction.
What if it gets something wrong?
You fix it. Every detected food is editable before you confirm: you can change the name, adjust the quantity, remove a line, or add one. You decide what enters the log — the AI suggests, you call the shots.
How many scans on the Free plan?
The Free plan includes 3 AI photo scans per week, no strings attached. The Standard plan bumps that to 8 scans per day. The Pro plan goes up to 15 scans per day, plus 100 daily barcode scans and unlimited manual search.
Does the AI scan work offline?
No. Image recognition and portion estimation run on the server, so a connection is required when you scan. The rest of the food log — viewing entries, editing, searching your recent foods — works offline and syncs once you're back online.
Are my photos private?
Yes. Photos are used only to analyze your meals and stay tied to your account. They are not used to train public models, and you can wipe your history from settings at any time.
Which nutrients are calculated?
Total calories, protein, carbs, and fat, per food and for the whole meal. Fiber and sugar also show up when the nutrition database provides them. Everything is aggregated by day, by meal, and by food in your food log.
See also
Around the AI meal photo scan.
Training
Strength training programs
Push/Pull/Legs, Upper/Lower, or Full Body — tailored to your equipment and level.
ExploreProgressProgress tracking
Smoothed weight curve, measurements, and before/after photos to see the real trend.
ExploreOverviewAll features
Nutrition, training, progress, planning — the four pillars of the app on one page.
ExploreYour next plate, just snap it.
Download ZymFit and try the AI photo scan on your next meal. Free plan, no credit card required.