WHOOP connection
Import calories burned through the WHOOP API to enrich daily balance, gaps, and history.
Data by WHOOPiPhone nutrition app + AI
The nutrition app that turns one meal photo into a daily action plan.
Caltris analyzes your meals from photos, tracks calories, macros, vitamins, and body composition, then connects Apple Health, WHOOP, and Withings so your iPhone nutrition workflow stays practical.
Now on the App Store
- Meal photo analysis with optional nutrition-label support
- Calories eaten vs burned with Apple Health or WHOOP
- Vitamins, 7-day history, and body composition through Withings
Native iOS dashboard
Calories, vitamins, history
Meal photo analysis on iPhone
Calories, macros, and vitamins tracking
Apple Health, WHOOP, and Withings
Muscle gain, maintenance, or fat loss
Connected integrations
One view for nutrition, calories burned, and body composition
Caltris centralizes Apple Health, WHOOP, and Withings so you can compare calories consumed, calories burned, 7-day trends, and body metrics without juggling multiple nutrition apps.
Apple Health connection
Sync iPhone health data so your nutrition dashboard keeps real-world burn context.
Withings connection
Import body-composition data to track fat mass, lean mass, and weekly progression more clearly.
How it works
A meal photo app built for daily use, not just one-off estimates
The goal is not only to estimate a plate. Caltris turns each photo into action-ready data: calories, macros, vitamins, history, and recommendations adapted to your current nutrition goal.
Take a meal photo
Capture your plate or use an existing photo. For packaged foods, add a nutrition-label photo for more context.
Get calories, macros, and vitamins
The AI estimates portions and calculates protein, carbs, fat, fiber, sodium, and daily vitamin coverage.
Connect the photo to real tracking
Your dashboard, 7-day history, daily gaps, and recommendations all update right away.
A real meal photo that works well in Caltris
A sharp, simple, well-framed meal photo is enough to start a real nutrition workflow on iPhone.
Use cases
Useful guides for the most common nutrition needs
Depending on your goal, you can start with meal photo analysis, calorie tracking on iPhone, muscle gain, macros and vitamins, Apple Health, or body-progress context through Withings.
Core features
Built for complete nutrition tracking, not just meal logging
Calories and vitamin dashboard
A daily view with nutrition rings, vitamin coverage, daily gaps, and a readable summary.
Photo + label analysis
Add a plate, a drink, or a packaged food with an optional label photo for better precision.
Useful recommendations
The daily review accounts for nutrition goal, observed gaps, and ingredients already available.
7-day history
Simple markers to spot strong days, low days, and overall weekly consistency.
Apple Health, WHOOP, Withings
Calories burned and body composition enrich the workflow without making the app harder to use.
Goal-oriented workflow
Fat loss, maintenance, recomposition, or muscle gain: the data stays tied to action, not just logging.
iPhone screenshots
A desktop-friendly preview with real in-app data
These screenshots show the real product experience: calorie tracking, vitamins, history, and detailed meal analysis.
Complete nutrition dashboard
Calories eaten, calories burned, vitamins, daily gaps, and progress cues in one view.
Smart daily review
Daily gaps, vitamin summary, and recommendations written against your active goal.
Detailed meals
Meal photo, nutrients, vitamins, warnings, and alternatives in a readable photo-first layout.
History and body trends
Daily summaries, calories eaten versus burned, and body-composition trends in one place.
Add a meal with AI
Camera or library, optional nutrition labels, and one-tap analysis from the add-meal flow.
FAQ
Questions people ask about a meal photo nutrition app
Does Caltris work like a meal photo analysis app?
Yes. The app turns a photo into calories, macros, vitamins, and an immediately useful daily reading.
Can I track calories on iPhone without entering everything manually?
Yes. Caltris is built to reduce friction: meal photo, daily summary, 7-day history, and connected health integrations.
Are Apple Health and WHOOP actually useful inside Caltris?
Yes. They connect calories burned back to nutrition tracking so daily gaps make more sense.
Is Withings only useful for body weight?
No. The bigger value is putting body composition back inside the nutrition workflow over time.
Can Caltris help with muscle gain?
Yes. The app helps you verify calorie surplus, protein consistency, and body-composition trends week after week.
Is the app still useful without integrations?
Yes. The core remains meal photo analysis, calorie/macro/vitamin tracking, and daily recommendations.
Caltris for real use cases
Explore the guides that match your goal
If you want to compare the app through one specific need, start with photo meal analysis, iPhone calorie tracking, or muscle gain. Those pages describe in more detail how Caltris works day after day.