
It splits the plate, not guesses at it.
Point the camera at your food and Ketolock itemises the meal — each part verified separately, each portion correctable with a tap.
Snap it, scan it, or just say it. Ketolock answers the only question that matters — does this keep you in, or knock you out?
Free to download · All logging free & unlimited · No account required
One real barcode scan from inside the app, unedited.
Free and unlimited, with no daily cap. The scan reads the actual label rather than the marketing on the front of the pack.
You get the number that decides your day, and the Radar reads what is underneath it — here, corn syrup, called out plainly as something that will break ketosis.
No euphemism, no maybe — every result carries a plain verdict: keto safe, moderation, or kicks you out.
✕ Keto Safe · Moderation · Kicks You OutMaltitol, hidden starches, “sugar-free” syrups that aren’t. And it stays quiet about erythritol, allulose and stevia — warning you about your own keto sweetener would just teach you to ignore it.
✓ Free for everyone, foreverEvery estimate tells you how confident it is and why. When a food matched a nutrition database, it says so. When it’s a guess, it says that too.

Point the camera at your food and Ketolock itemises the meal — each part verified separately, each portion correctable with a tap.

Type it or dictate it. On iPhones with Apple Intelligence this runs entirely on your device — nothing leaves your phone, no limit, no cost.
The barcode reads the real label, so it’s the most accurate route there is — and the big trackers charge for it. Ketolock never will.
No mockups, no renders — these are captures from Ketolock running, honest numbers included.
Keto works on one lever: carbohydrate is the macronutrient that raises blood glucose most, so cutting it lowers both your glucose load and the insulin your body has to make. Here is who tends to feel that most.
Fewer carbs in means less glucose to manage and less insulin demanded of a system that has stopped responding well to it. The American Diabetes Association lists low-carbohydrate eating as one recognised option for managing type 2 diabetes.
Read this first: if you take insulin or sulfonylureas, cutting carbs can drop your blood sugar fast. That is a conversation with your doctor before you start, not after.
A high-carb lunch spikes blood glucose and then drops it — that dip is the 3pm slump. Keeping carbs low flattens the curve, and once you are fat-adapted your brain also runs partly on ketones, a fuel that does not depend on what you last ate.
Honest framing: this is about steadier energy, not a higher IQ. Nobody has shown keto makes you smarter.
Fat and protein are more filling than refined carbohydrate, and steady blood sugar means fewer hunger spikes. Many people end up eating less without counting a single calorie.
The ketogenic diet was formalised at the Mayo Clinic in 1921 to treat epilepsy, and it is still used today for seizures that resist medication. Whatever else keto is, it is not new.
The headaches and fatigue of week one are usually sodium, potassium and magnesium falling as water leaves with the carbs. Ketolock tracks all three — most trackers ignore them entirely.
Ketolock is a wellness and food-tracking app, not a medical device, and none of this is medical advice. If you have a diagnosed condition or take medication, talk to your doctor before changing how you eat.
The things that matter on keto, and who actually gives them to you.
| Ketolock | Carb Manager | MyFitnessPal | |
|---|---|---|---|
| Yearly price | $19.99 | $39.99 | $79.99 |
| Barcode scanning free | Yes | Premium | Premium |
| AI meal scanning free | Unlimited | Metered | Premium |
| Net carbs as the headline | Yes | Yes | Calories first |
| Flags deceptive ingredients | Free for all | — | — |
| Shows AI confidence | Every scan | — | — |
| Works with no account | Yes | Sign-up required | Sign-up required |
| On-device AI option | Yes | — | — |
Competitor pricing and features as published on their own US App Store listings and websites, July 2026. They’re good apps with far longer track records — we’re newer, cheaper, and more honest about what a number is worth.
“Best of its kind” is easy to say, so here is the specific version: these exist in Ketolock and, as of August 2026, in none of the major keto or calorie trackers we compared against.
Maltitol, hidden starches, “keto” bars that quietly are not — flagged on every food you log, with the reason. No other tracker warns you that a compliant-looking label will still knock you out of ketosis. It is free for everyone, because gating it would defeat the point.
Every scan reports its own confidence and how many items matched a nutrition database — “73% · 4 of 5 matched.” Every other AI food scanner hands you a number with no indication of whether to trust it.
Photo scanning, describe-a-meal and barcode all have no daily cap and no trial clock. The others meter their AI by the scan and put barcode behind the paywall; here the whole logging surface is free, and the subscription sells the fasting timer and recipe library instead.
Sodium, potassium and magnesium, from labelled foods and one-tap adds. The keto flu is an electrolyte problem, and this is the trio nearly every other tracker ignores completely.
No sign-up, ever. On iPhones with Apple Intelligence, meal chat runs entirely on the device; choose “On-device only” and your photos never leave the phone either. Competitors require an account before you can log a single egg.
Fasting zones, breath-ketone logging, a Glucose Ketone Index from a paired CGM, and net carbs as the headline instead of calories with a keto label bolted on.
Compared against the current US App Store listings and public feature pages of Carb Manager, MyFitnessPal, Cronometer, Senza and Cal AI, August 2026. If one of them ships any of the above, tell us and this section changes.
A searchable guide built into the app, with keto-viable orders and the macros that come with them — not a blog post you have to go hunting for.
$19.99 a year works out to $1.67 a month, or pay $3.99 monthly if you’d rather not commit. One subscription, priced honestly. Cancel any time in your iPhone’s settings and keep the free tier forever.
Ketolock’s App Store privacy label reads “Data Not Linked to You” — because there’s no account to link anything to.
Free on the App Store. No account, no ads — your first scan is thirty seconds away.