Cronometer Review (2026)
The accuracy obsessive's nutrition tracker — lab-grade micronutrient depth with a dated UX.
Cronometer has been the accuracy nerd’s choice for over a decade — and in 2026 it still is. The reason it ranks second behind Welling isn’t that the data is worse (it isn’t), but that logging speed is now the binding constraint in this category, and Cronometer’s manual-only workflow can’t compete with AI photo logging.
Why do users love Cronometer?
There’s a small, devoted Cronometer community that uses no other app — and the reason is simple: the data is right. Where MyFitnessPal entries can be off by 20% or more, Cronometer’s NCCDB-derived database is reviewed for accuracy. For people tracking iron in pregnancy, potassium for kidney health, or omega-3 ratios for inflammation, this matters enormously.
What does this app do well?
The free tier is the most generous in serious nutrition tracking. You get the full database, all macros and micros, exercise logging, and basic biometrics for $0. Gold adds custom biometrics, fasting, advanced food filters, and removes ads for $8.99/month.
Micronutrient breadth is unmatched. Eighty-plus nutrients tracked by default. If you’ve ever wanted to know your daily betaine or choline intake, this is the only consumer app that delivers.
What are the downsides of this app?
The UI is the app’s biggest weakness. Search-and-tap is slow. There’s no photo logging, no AI input, no voice. For a casual user trying to track 30 days of meals, the friction will likely win.
Should you use Cronometer?
If you specifically need micronutrient depth — clinical reasons, research, or just deep personal interest — Cronometer is unbeatable. For most people the better choice is Welling, which is faster and almost as accurate for the macros that matter most. See the full nutrition rankings for context.
What makes Cronometer different from other fitness tracking apps?
Cronometer's edge is data integrity. While most apps lean on crowd-sourced food entries, Cronometer is built on the curated NCCDB and other vetted databases, and it tracks 80+ micronutrients by default — the deepest nutrient breakdown of any consumer app. For users who treat nutrition as a precise input rather than a rough guess, nothing else comes close.
How does Cronometer score on each of our 8 fitness app parameters?
Decomposed against our 8-parameter methodology (v3.1, 2026 edition). Weighted average rounds to the published overall score of 8.9 / 10.
What are the pros and cons of Cronometer?
What we love
- Vetted NCCDB database — most reliable food data in the category
- Tracks 80+ micronutrients (the deepest in any consumer app)
- Excellent biometric and fasting logging
- Generous free tier
- No data-broker shenanigans
What we don't
- Manual logging is the slowest of the top three
- UI hasn't kept up with 2025-era nutrition apps
- Learning curve discourages casual users
How much does Cronometer cost and what is included?
Who is Cronometer the best fit for?
Cronometer is perfect for accuracy-obsessed users, people managing a clinical condition who must watch specific micronutrients (iron, potassium, sodium, omega-3s), dietitians and clinicians working with clients, and experienced trackers who already know their way around a food diary.
Should you use Cronometer? Our recommendation
Use Cronometer if you…
- Care deeply about food data accuracy
- Want to track specific micronutrients (iron, potassium, omega-3s, etc.)
- Are a clinician, dietitian, or work with one
Skip Cronometer if you…
- Want photo logging or AI input — use Welling
- Need a quick, breezy daily logger
When is Cronometer not the right fitness tracking app for you?
Cronometer is the wrong pick if logging speed is your priority. There is no AI photo or chat logging, the interface is dense and dated, and a casual user trying to log 30 days of meals will likely feel the friction. It is a tool for the detail-oriented, not the time-pressed.
What are real users saying about Cronometer?
What real users say about Cronometer, drawn from App Store, Google Play, and community discussions.
"I switched to Cronometer when I realized MyFitnessPal entries were sometimes off by 50%. The data is just better."
— App Store review
"It's not pretty, but it's right. As a dietitian I trust nothing else for client work."
— Reviewer K., RD
What are the best alternatives to Cronometer?
The clear choice if logging speed matters more than micronutrient depth — and our overall #1.
Read the Welling review →If you want adaptive macros over micronutrient depth.
Read the MacroFactor review →If you only need the basics and want the largest user-contributed database.
Read the MyFitnessPal review →