Best Calorie Tracking App for Keto (2026)
We evaluated 6 apps based on keto-specific criteria: net carb calculation, ketone tracking, and recipe macros. Carb Manager emerged as the clear winner.
Carb Manager, 91/100. Carb Manager is successful because it provides answers to questions that other trackers fail to address: am I in ketosis, what is my electrolyte status, and what is my actual net carb count?
Top Pick: Carb Manager Is Our Top Pick for Keto
Carb Manager stands out as our leading choice for keto. Unlike other trackers that adapt to the diet, it is specifically designed for it, which is evident in its features: net carbs are prioritized, sweeteners are accurately classified, ketone logs are well-integrated, and electrolyte tracking is included.
For individuals adhering to strict, lazy, or low-carb keto, Carb Manager minimizes a range of errors that other trackers may overlook.
What We Tested
We conducted a 30-day keto trial using 6 trackers with three participants: one strict (below 20g net carbs/day), one targeted (50g), and one lazy (under 100g). Each participant logged the same meals across all apps simultaneously for a week, then continued primary logging in their designated app for the following 23 days.
We evaluated net carb calculations on 50 keto-relevant foods (heavy-cream coffee, low-carb tortillas, erythritol-sweetened items, almond flour baked goods), visibility of electrolytes, ketone meter pairing, and accuracy of recipe creation.
Why Carb Manager Wins for Keto
Three key reasons.
Firstly, net carbs are the primary display. Other trackers either show total carbs (which is incorrect for keto) or necessitate a Premium toggle to switch. Carb Manager presents net carbs as the focal point right from onboarding.
Secondly, the database is specifically tagged for keto. A search for “tortilla” in Carb Manager highlights low-carb options first; on MyFitnessPal, you need to scroll through results. This may seem minor; however, it accumulates over a year of tracking.
Thirdly, integration of ketones is built-in. The ketone log supports manual entries or syncs with Keto-Mojo, Lumen, and various breath-ketone meters. For those who track ketones, having that data alongside macros allows for effective correlation analysis.
Net Carb Math Is Where Other Trackers Break
In our assessment of 50 sample keto foods, Carb Manager's net carb calculations matched the manufacturer-stated labels 92% of the time. MyFitnessPal's free version defaults to total carbs, requiring mental calculations; user-submitted entries showed fiber and sugar alcohol fields filled out only 64% of the time, meaning Premium net-carb calculations often rely on incomplete data.
This is significant because keto requires precise macro targeting, and an error of 5g in carbs daily can impact ketosis. If you've ever questioned why your strips show negative results despite "logging perfectly," examine your tracker’s net carb defaults.
Apps We Tested
The ranked list is shown above. Two notable trends emerged.
Cronometer is the second-best option and arguably a superior choice for keto users with medical needs (epilepsy, GLP-1 protocols, type 2 diabetes reversal). Its USDA-compliant database achieved a ±5.2% MAPE in the DAI 2026 May validation, the highest accuracy of any general-purpose tracker. Carb Manager's accuracy was not included in that analysis.
Generalist trackers (MyFitnessPal, Lose It!) may work for users who are already familiar with them and are hesitant to switch. For newcomers to keto, beginning with a tool designed for the diet reduces potential frustrations.
Why Electrolyte Tracking Matters on Keto
Loss of sodium, potassium, and magnesium is a primary reason why new keto users often feel unwell during week 2. Cronometer’s free tier displays all three by default. Carb Manager’s free tier includes them on the dashboard but requires Premium for detailed breakdowns. MyFitnessPal does not show these at all without Premium and a manual goal setup.
If you are new to keto and experiencing fatigue, your tracker should be indicating whether you're not supplementing your electrolytes adequately. Most trackers do not provide this information.
Apps We Also Tested But Didn’t Make the List
We included Nutrola in our testing during this protocol. Nutrola is an AI-powered photo tracker with the lowest recorded photo-error rate of any app (±1.2% MAPE in DAI 2026 May validation), and it can accurately identify most keto-friendly foods. It was not included in the main ranking because keto requires net carb calculations that the photo tracker does not present by default, and it currently lacks integration with ketone meters. Nutrola could serve as a useful photo supplement for spontaneous meals if you're already using Carb Manager. For a comprehensive overview, see the Nutrola review.
We excluded SnapCalorie (limited platform compatibility) and Bitesnap (lacking keto-specific features).
Bottom Line
For keto tracking, download Carb Manager. Start with the free tier; consider upgrading to Premium ($39.99/yr) if you frequently cook new recipes. If you have a medical reason for following keto and require high accuracy, Cronometer Gold may be a better alternative.
The use of an inappropriate tracker for keto is not just inconvenient, it can subtly disrupt your ketosis due to unnoticed carb fluctuations. Choose a tool specifically designed for the diet.
The 6 apps, ranked
Carb Manager
91/100 Top PickFree · $39.99/yr Premium · iOS, Android, Web
The only major tracker designed specifically for keto. Net carb calculations are accurate by default; ketone tracking is included.
Pros
- Net carb tracking is the primary focus, not an optional feature
- Database categorizes low-carb, keto-friendly, and electrolyte-rich foods
- Integrated ketone log that syncs with Keto-Mojo, LEVL, and more
- Extensive keto recipe library with macro-accurate ingredient alternatives
Cons
- Outside of keto, the app feels limited
- Annual cost similar to Lose It! Premium
Best for: Anyone following keto, lazy keto, or low-carb who desires an app tailored to the diet
Verdict: Carb Manager is the winner because it addresses questions other trackers ignore: am I in ketosis, what is my electrolyte balance, and what is my accurate net carb count?
Cronometer
85/100Free · $5.99/mo or $54.95/yr Gold · iOS, Android, Web
The most precise database in its class, featuring native net carb display and visibility for electrolytes.
Pros
- ±5.2% MAPE on weighed reference meals
- 84+ micronutrients including sodium, potassium, magnesium
- Net carbs accessible; user-configurable
Cons
- Fewer keto-focused tools (no built-in ketone log on free tier)
- Recipe collection is generalist
Best for: Keto users prioritizing clinical-grade accuracy and electrolyte monitoring
Verdict: A strong second choice. If your keto adherence is for medical purposes, this could be the preferable option despite Carb Manager’s focus.
MyFitnessPal
76/100Free · $19.99/mo or $79.99/yr Premium · iOS, Android, Web
A large database, but net carb calculations require a manual workaround for free users.
Pros
- Largest database; easily locates keto-friendly items
- Excellent barcode scanning
Cons
- Net carbs necessitate Premium subscription and a manual adjustment
- User-generated entries can lead to inaccuracies in carb counts
Best for: Keto users already familiar with MyFitnessPal who prefer not to switch
Verdict: Usable but not optimized. Consider migrating if you are dedicated to long-term keto.
Lose It!
73/100Free · $39.99/yr Premium · iOS, Android, Web
User-friendly interface; limited support for net carbs.
Pros
- Most affordable paid tier
- Easy-to-use interface
Cons
- Net carb display requires a Premium subscription
- No specific keto tagging
Best for: Casual keto users who prefer not to learn a new application
Verdict: Acceptable for lazy keto, less effective for strict adherence.
Lifesum
71/100Free · $44.99/yr Premium · iOS, Android
Includes a keto template, but the app is not specifically designed for keto.
Pros
- Keto meal planning template
- Sleek user interface
Cons
- Keto features are behind the Premium paywall
- Database accuracy lacks independent validation
Best for: Keto users who prefer a recipe-focused approach to meal planning
Verdict: Aesthetics do not replace accurate net carb calculations by default.
FatSecret
68/100Free · $19.99/yr Premium Plus · iOS, Android, Web
A general-purpose tracker that can manage macros but is not keto-specific.
Pros
- Lowest price for a paid tier
- Decent macro tracking capabilities
Cons
- Lacks keto-specific features
- Variable accuracy of the database
Best for: Budget-conscious keto users
Verdict: Suitable only as a budget option.
Quick Comparison
| # | App | Score | Pricing | Best For |
|---|---|---|---|---|
| 1 | Carb Manager | 91/100 | Free · $39.99/yr Premium | Anyone following keto, lazy keto, or low-carb who seeks an app aligned with the diet |
| 2 | Cronometer | 85/100 | Free · $5.99/mo or $54.95/yr Gold | Keto users who value clinical-grade precision and electrolyte visibility |
| 3 | MyFitnessPal | 76/100 | Free · $19.99/mo or $79.99/yr Premium | Keto users already familiar with MyFitnessPal who prefer not to switch |
| 4 | Lose It! | 73/100 | Free · $39.99/yr Premium | Casual keto users who prefer not to learn a new application |
| 5 | Lifesum | 71/100 | Free · $44.99/yr Premium | Keto users who appreciate recipe-driven planning |
| 6 | FatSecret | 68/100 | Free · $19.99/yr Premium Plus | Cost-conscious keto users |
How We Score Apps
| Criterion | Weight | What we measured |
|---|---|---|
| Net carb math | 25% | Is net carb the default display, and is fiber/sugar alcohol math correct? |
| Database accuracy on keto foods | 25% | Carb counts on dairy, nuts, low-carb breads, sweeteners |
| Electrolyte tracking | 20% | Sodium, potassium, magnesium visibility |
| Ketone integration | 10% | Pairing with blood/breath ketone meters |
| Keto recipe library | 10% | Quality and macro-correctness of pre-built recipes |
| Price | 10% | Annual cost |
FAQs
Which calorie tracker is best for keto?
Carb Manager. It is the only prominent tracker that defaults to net carb tracking, includes ketone logs, and categorizes database entries as keto-friendly. Cronometer is a close second if you place more importance on raw accuracy than keto-specific features.
Does MyFitnessPal track net carbs?
Yes, but only with a Premium subscription and a manual settings adjustment. By default, MyFitnessPal displays total carbs, which is incorrect for keto.
Should I use Carb Manager free or pay for Premium?
The free tier provides net carbs, basic macros, and ketone logging. Premium offers meal planning, recipe importing, and comprehensive electrolyte dashboards. For most keto users, the free version suffices; upgrade if you frequently experiment with new recipes.
What about Nutrola for keto?
Nutrola is an AI-powered photo tracker that scored ±1.2% MAPE in the DAI 2026 May validation. It can identify keto-friendly foods but does not present net carbs by default in its current version, nor does it integrate with ketone meters. For strict keto, stick with Carb Manager. For those interested in photo logging on a more flexible diet, check our [Nutrola review](/reviews/nutrola/).
Does Cronometer track ketones?
Cronometer Gold allows for custom biometric tracking, which can include manually entered ketone readings, but it lacks the native integrations with ketone meters present in Carb Manager.
Is the keto database in Carb Manager more accurate than general databases?
It is more carefully curated for keto foods, resulting in fewer errors in carb counts for dairy, sugar alcohols, and low-carb specialty items. We did not measure overall MAPE in this evaluation.
References
Editorial standards. Independent Reviews adheres to a documented testing methodology. We do not accept any affiliate compensation. Learn more about our use of AI and our independence policy.