Free ChatGPT calorie tracker
By Eric Parker, founder of TrueCal.
TrueCal for ChatGPT is in review and is not publicly available yet. The submitted plugin includes three introductory food logging attempts for accounts without paid AI logging access.
The plugin has been submitted for review. You cannot install it from the public ChatGPT directory yet. You can use the TrueCal app now.
A nutrition estimate in an ordinary ChatGPT conversation is not a saved TrueCal meal. After publication, connect the plugin using Continue with Google and review the permissions. Use the Google account linked to your TrueCal account.
Three introductory attempts
Accounts without paid AI logging access get three food logging attempts through the plugin. An attempt can count once processing starts even if no meal is saved. The allowance does not renew and is not a free trial.
After the allowance
You can still view your saved food and daily calorie totals. Check your diary if a logging reply is unclear before asking to save the meal again. Further AI logging depends on your account access.
The app remains available
Manual calorie logging stays free in the TrueCal app. See pricing for paid features. The separate phone app trial does not apply to web or ChatGPT accounts.
What you can use now
Ask an assistant for an estimate or use the TrueCal app to keep a food record. The ChatGPT plugin is still in review.
Short answer
You can ask ChatGPT for nutrition estimates, subject to your ChatGPT plan and limits. Save those estimates yourself if you want a record. The TrueCal app provides a separate food diary. The submitted plugin will let connected accounts save meals and read their records within ChatGPT once it is published.
- Include foods and portions in each meal description
- Check whether a meal was saved before trying again
- Check pricing pages for what’s included in a product’s free tier
What “free” usually means
There are two different “free” approaches:
- Free assistant + manual tracking: you ask ChatGPT for estimates and keep totals yourself (notes/spreadsheet).
- Free tier product: a dedicated tracker that saves your logs and shows totals, with some advanced features paid.
The simplest free workflow (one message per meal)
Estimate calories and macros (protein, carbs, fat). Meal: [what I ate] Portions: [rough amounts] Details: [brand/recipe/cooking method, sauces, oils, drinks] Output: 1) Total calories + macros 2) Assumptions you made
If you want the full overview, start here: ChatGPT calorie tracker.
How to make “free” actually work (the anti-drop-off checklist)
- Log immediately after eating. “Later” becomes “never.”
- Use the same template every time.
- Don’t chase precision: aim for consistent estimates.
- Fix the multipliers: oils, sauces, cheese, nuts, drinks.
What you can ask after connecting
Ask TrueCal to log a meal, open your food diary, or show recent foods. Progress shows recorded calories and weight, and you can enter a weight manually. Activity appears only when it has already synced to TrueCal. Missing data is not a zero measurement.
Paid access and the phone app trial
See pricing for current plans and included features. The introductory plugin allowance is separate from the 7-day Pro trial for eligible customers in the iPhone or Android app. The App Store or Google Play runs that trial and charges when it ends unless you cancel at least 24 hours before the end. Web and ChatGPT accounts do not receive that trial.