Cronometer vs LIBRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cronometer
Track your diet and exercise with an extensive food database and detailed nutrient breakdowns. Monitor progress towards health goals, integrate with fitness devices, and gain insights into sleep patterns. Offers premium features for enhanced tracking and an ad-free experience.
- Extensive verified food database
- Detailed nutrient and calorie tracking
- Fitness goal setting and progress monitoring
- Integration with fitness trackers and devices
- Enhanced sleep tracking and analysis
- Customizable diary groups and charts
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Cronometer is a powerful calorie counter, nutrition tracker, and food diary designed for accuracy. Track calories, macros, fasting, and 95+ vitamins and minerals with one of the most trusted health and fitness apps available. Whether you're using Cronometer as a weight loss tracker, macro tracker or overall metabolic health tracker, you'll get clear, reliable science-backed insights into your nutrition and how it supports your goals. Unlike basic calorie counters, Cronometer is built on a curated database of more than 1.1 million verified foods, including analyzed entries for unmatched accuracy. Get precise nutrition tracking, comprehensive nutrient analysis, and reliable nutrition facts you can trust. Gain deeper nutrition insights with precision nutrition tools trusted by dietitians, healthcare professionals, and athletes worldwide. Track your nutrition with confidence • Log meals in a detailed food diary • Track calories, protein, carbs, fat, fiber, vitamins, and minerals • Monitor both macronutrients and micronutrients • Compare your intake against personalized nutrition targets Perfect for weight loss, muscle gain, and improving overall health. A smarter weight tracker • Track calories and weight loss (or gain) with deeper nutritional context • Identify nutrient gaps that may affect energy, hunger, and progress • View trends over time with charts and reports • Built for sustainable weight loss, healthy weight management, and long-term success Build healthier habits • Understand how daily choices shape your long-term health • Monitor nutrition trends over time • Set personalized targets, track your personal progress, optimize your wellness • Turn accurate nutrition data into meaningful action Connect fitness, sleep, and health • Sync with Apple Health and Apple Watch • Connect Fitbit, Garmin, Oura, Whoop, and more • Import workouts, activity, and energy expenditure • Import sleep data and explore how caffeine, alcohol, and nutrition affect sleep quality Cronometer works seamlessly as a fitness tracker and health tracker, giving you a complete picture of your wellness. Four easy ways to log food • Log meals using photo or voice logging. • AI identifies foods, estimates portions and simplifies meal tracking • Scan barcodes for free • Or search a trusted, science-backed food database Why Cronometer? Cronometer is the calorie tracker and food diary trusted by dietitians, athletes, and health professionals worldwide. It’s been featured in Healthline, Prevention, Women’s Health, Good Housekeeping, Men’s Health, CNET, Oprah and more. Upgrade to Cronometer Gold Unlock premium tools for deeper insights: • Photo & Voice Logging • Fasting Tracker • Recipe Importer • Repeat Items • Deeper insights • More options to customize • Ad-free experience • Access Crono Coach Ideal for advanced tracking, fasting, and long-term weight management. SUBSCRIPTION DETAILS Upgrade to Cronometer Gold at any time. Payment will be charged to your Apple ID at confirmation of purchase. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription in your App Store Account Settings. Terms of Use: https://cronometer.com/terms/ Privacy Policy: https://cronometer.com/privacy/
LIBRO
This AI-powered health assistant helps you track diet, exercise, and lifestyle goals with features like voice logging and a barcode scanner. It offers personalized suggestions and meal planning tools. Access is currently by invitation only from an accredited nutrition professional.
- AI-powered health tracking
- Voice logging
- Barcode scanner
- Personalized suggestions
- Diet and activity logging
- Meal planning
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LIBRO is an AI health assistant designed to track your diet, exercise and lifestyle goals. ** LIBRO is currently available by invitation only ** You must have been invited by an accredited nutrition professional to use this app. Logging has never been this easy! A personalised voice assistant and barcode scanner help you to log foods and a unique memory system automatically suggests what you have previously eaten based on the meal occasion. LIBRO was created by Nutritics, the world's leading provider of professional nutrition software.With key features such as diet and activity logging, recipe and cost analysis, meal planning and a label maker, Nutritics is constantly defining new ways to empower the world to make better food choices. We love feedback! Just drop us a line at support@nutritics.com and let us know how you get on.
Screenshots
Verdict
The clearest difference is review sentiment: Cronometer at 69% against LIBRO's 4%. Cronometer also leads on rating (4.8 vs 2.5) and update cadence (weekly vs every 7 months). LIBRO's advantage is in-app purchases (none vs 18) and ads (none vs shown). On price and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Cronometer sells 11 in-app purchases, starting at $10.99 per month. LIBRO asks for nothing beyond the download.
Cronometer holds the better App Store score, 4.8 against 2.5. That said, the two scores are not equally well evidenced: Cronometer has 99K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of Cronometer's written reviews are positive against 4% of LIBRO's.
Cronometer ships an update weekly, LIBRO every 7 months. The most recent releases landed on October 17, 2026 and October 11, 2026 respectively.
| Parameter | Cronometer | LIBRO |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (99K ratings) — better | 2.5 (2 ratings) |
| Positive reviews | 69.4% of reviews — better | 4.0% of reviews |
| Number of ratings | 99K — better | 2 |
| Update frequency | Weekly — better | Every 7 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #17 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPod |
| Requires iOS | 15.5 | 14.0 — better |
| Further details — not scored | ||
| Size | 151 MB | 10 MB |
| Age rating | 12+ | 4+ |
| Developer | Cronometer Software Inc | Nutritics Limited |
Customer experience
Cronometer
LIBRO
Bugs and requests
Cronometer
Reported bugs
4 issues- Widgets don't update in real-time
- Occasional app freezes and crashes
- Issues with syncing fitness data from other apps
- Inaccurate calorie and nutrient tracking for some foods
Requested features
6 requests- Allow separating meals into breakfast, lunch, dinner
- Add more ethnic and international food options
- Implement Siri integration for logging food
- Provide more customization options for the home screen
- Add ability to edit database entries if information is inaccurate
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- Improve recipe sharing and importing functionality
LIBRO
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Cronometer
- Gold Monthly7 Days trial$10.991 Month
- Gold Monthly$10.991 Month
- Cronometer Gold1 Month trial2 variants$10.991 Month
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- Gold Subscription1 Month trial$10.991 Month
- Gold Monthly1 Month trial2 variants$10.991 Month
- Gold6 Months trial$34.996 Months
- Gold Annual1 Year trial$54.991 Year
- Gold Annual7 Days trial$59.991 Year
- Gold Annual$59.991 Year
- Gold Annual1 Year trial4 variants$59.991 Year
- Cronometer Gold1 Year trial$59.991 Year
LIBRO
No in-app purchases









