Lose weight, build muscle, or maintain your weight with an eating plan that fits your life. CalZen helps you figure out how much to eat, plan meals around foods you like, and see your progress over time.
Over 3 million downloads worldwide.
Food diary and scanner
– Log food with a photo, your voice, or a text entry
– Scan packaged foods to add their calories and macros
– Track calories, protein, carbs, fat, and fiber by meal and by day
If a product isn’t in the database, take photos of the package and nutrition facts panel to add it.
Weekly meal plans
– Get a seven-day meal plan with portions tailored to your calorie and macro goals
– Tell us about your dietary restrictions, foods you don’t like, and favorite cuisines
– Get recipes that fit your cooking skills and the time you have
– Follow recipes with photos and step-by-step instructions, then log meals straight to your diary
– Shop for the week with one grocery list and check off items as you go
Weight and progress
– Log your weight and body measurements to see how you’re progressing toward your goal
– Use weight charts to see your progress over time
– Review your calorie and macro stats to see how your eating lines up with your targets
– Save progress photos to see how your body changes over time
GLP-1 diary
Keep a record of your prescribed medication in the same app you use for food and weight.
– Log doses
– Set medication reminders
– Note how you feel and review past entries
Track your water intake, set a daily goal, and look back at your history.
Connect Apple Health to see steps, workouts, and active calories burned alongside your food diary.
AI food analysis requires a subscription. Each weekly meal plan is a separate one-time purchase with no automatic renewal.
Questions or ideas? Email hello@calzen.ai
Terms of Use: https://calzen.ai/terms
Privacy Policy: https://calzen.ai/privacy
CalZen is not a medical app or medical device. It does not diagnose or treat medical conditions and does not replace professional medical advice. Calorie counts and nutritional values are estimates. Always consult your doctor before changing your diet, exercise routine, medication, or dosage. Follow your doctor’s instructions for your medication and dosage.
Please do a free trial for me still a student got no money
Developer Response
Totally get you—being a student is tough on the wallet! We do offer a few free scans to try out the app first, so you can see how it works without paying. Our AI uses servers each time you take a photo, which is why we need subscriptions, but we’re exploring more flexible options for people like you. Feel free to reach out at calzen@42apps.io—we’d love to hear your thoughts and see what we can do!
Not accurate!
miramax88
How AI should measure size of a meal? It has no idea how close you are taking pictures. I tried to take a picture of orange and it showed me weight twice more than it is. I meant it calculated calories based on bigger portion. Also no free version available
Developer Response
You're right—AI can’t always judge portion sizes perfectly. It estimates based on the image, so things like distance and angle can affect results. A good trick is to include a common object like a fork or your hand in the photo to help with scale. On the free version—every scan uses AI and cloud processing, so we have limits, but we do offer trial scans so you can test it out. If you have any other feedback or want us to look into specific issues, email us at calzen@42apps.io—we’d love to help!
They took my money
Lucygoosy08
This app took my money and didn’t refund me or let me use the app. Don’t download this app it’s a scam. Use free apps to track your calories and PLEASE don’t use this app. I would LOVE to speak to someone about getting my money back because this is ridiculous.
Developer Response
Sorry you ran into this, that definitely shouldn’t be happening. Sometimes the subscription doesn’t sync, so try hitting Restore on the purchase screen to unlock your access. Since we can’t handle refunds directly, please email calzen@42apps.io so we can look into what went wrong and help sort this out for you.
This app is good
 Sonic
It helps you losing weight
Developer Response
Thanks for the review, great to hear the app helps with tracking your meals from photos. If you ever need anything, reach out at calzen@42apps.io.
Take the guesswork out of your week with meals planned around your calorie goal and tastes.
– Your weekly menu accounts for dietary restrictions, favorite cuisines, and how much time you have to cook
– Each recipe includes a photo, portion sizes, and step-by-step instructions. Get one shopping list for the week and log meals straight to your diary
– Apple Health sync now sends your food and water entries to Health and keeps weight and body measurements in sync
– Adding a product from its label? The camera finds the nutrition facts panel and takes the photo when you hold steady
Got an idea, or something feels off? Email us at hello@calzen.ai and we'll sort it out.
Version 2.14.0
The developer, 42apps, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Health & Fitness
Contact Info
User Content
Identifiers
Usage Data
Diagnostics
Other Data
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
42apps, TOO
Size
147 MB
Category
Health & Fitness
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.