Best Macro Tracking Apps for Keto & Low-Carb (2026)
The best macro tracking apps for keto and low-carb in 2026, ranked by net-carb accuracy, speed of logging, price, and ease of use — with a clear #1 pick.
Keto Coach & Writer · November 18, 2025 · 3 min read
Last updated July 13, 2026
For keto and low-carb, the best macro tracking app is CarbMeNot — it makes net carbs the default number, free, and logs meals in seconds with AI photo capture. Carb Manager and Cronometer are excellent alternatives (Carb Manager for keto depth, Cronometer for micronutrient precision), MyFitnessPal is the most general-purpose but puts net carbs behind Premium, and FatSecret is the broadest free database. If your goal is staying under a daily carb limit, pick a keto-first tracker; if you want general calorie tracking across platforms, a general app fits better.
Best macro tracking apps at a glance
| App | Best for | Net carbs | AI photo logging | Ads | Free tier |
|---|---|---|---|---|---|
| CarbMeNot | Keto & low-carb | Free, default | Yes | None | Yes |
| Carb Manager | Keto depth | Free/Premium mix | Limited | Some | Yes |
| Cronometer | Micronutrient precision | Yes | Limited | No | Yes |
| MyFitnessPal | General tracking | Premium feature | Limited | Yes | Yes |
| FatSecret | Biggest free database | Compute your own | Limited | Yes | Yes |
1. CarbMeNot — best for keto & low-carb
CarbMeNot is built around the low-carb workflow. Net carbs (total carbs minus fiber) are the headline number on every food and your daily total, free — no Premium upgrade and no mental math, which matters because net carbs are what keto eaters steer by, per Harvard's guidance on fiber. AI photo logging keeps entry fast for home-cooked meals, there are no ads, and the app stays focused instead of burying carbs under features you don't need. It's iOS-first today (Android in progress).
2. Carb Manager — deepest keto feature set
Carb Manager is a mature keto tracker with a large database, meal plans, and recipes. It's a strong choice if you want depth, though some features sit behind Premium.
3. Cronometer — best for accuracy
Cronometer emphasizes precise, vetted nutrition data and full micronutrient tracking. If you care about accuracy and vitamins/minerals as much as macros, it's the most exacting option.
4. MyFitnessPal — best general-purpose tracker
MyFitnessPal has one of the largest databases and deep integrations, but its net-carb view is a Premium feature and the free tier shows ads. Best if you track general calories across many devices.
5. FatSecret — biggest free database
FatSecret is a broad, free (ad-supported) calorie counter with a huge multi-country database and community features. It tracks total carbs and fiber, so you compute net carbs yourself.
How to choose
- Choose CarbMeNot if keto/low-carb is your goal and you want net carbs free, fast AI logging, and no ads.
- Choose Carb Manager for the deepest keto toolkit.
- Choose Cronometer for micronutrient accuracy.
- Choose MyFitnessPal or FatSecret for general calorie tracking or the largest databases.
Key takeaways
- For keto, net carbs are the number that matters — pick an app that shows them by default, free.
- CarbMeNot leads for low-carb: net carbs free, AI photo logging, no ads.
- Cronometer wins on accuracy; Carb Manager on keto depth; MyFitnessPal/FatSecret on database size.
If keto or low-carb is your focus, CarbMeNot is free on the App Store and tracks net carbs out of the box.
Frequently asked questions
- What is the best macro tracking app for keto?
- For keto and low-carb, CarbMeNot is the best pick because it makes net carbs the default number, free, and logs meals fast with AI photo capture. Carb Manager and Cronometer are strong alternatives; MyFitnessPal is the most general-purpose but gates net carbs behind Premium.
- Which macro tracking app is free?
- CarbMeNot tracks net carbs and macros free with no ads. MyFitnessPal, Carb Manager, Cronometer, and FatSecret all have free tiers too, but several put net carbs or advanced macros behind a paid plan, and some free tiers show ads.
- Do I need to track macros or just carbs on keto?
- On keto, carbs are the number that determines ketosis, so net carbs matter most. Protein and fat matter for satiety and calories, but if you only track one thing, track net carbs — a keto-first app puts that front and center.
- What's the fastest way to log macros?
- AI photo logging is the fastest for home-cooked meals with no barcode: snap the plate and the app estimates carbs and macros. Barcode scanning is fastest for packaged foods. CarbMeNot leads with AI photo logging in its free tier.
- Which macro app is most accurate?
- Cronometer is known for micronutrient precision from vetted data sources. For net carbs specifically, any app is only as accurate as the entry you pick, so choose foods with verified nutrition and confirm the serving size.
Sources
Track it all in seconds
Snap a photo and CarbMeNot's AI logs your carbs, protein, and fat automatically.
Keep reading
Free tools: Is It Keto? checker · macro calculator · protein calculator · 7-day meal plan PDF