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How to scan a barcode in TrueCal

By Eric Parker, founder of TrueCal. Published . Updated .

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TrueCal Pro can scan a packaged food barcode and look up its nutrition information in food databases. The scan submits the barcode for logging, so check the result and the amount you ate.1

How to use it

  1. Tap Add entry, the plus button at the bottom of the screen, then tap Barcode.
  2. Allow camera access if requested. Use Barcode mode in the camera.
  3. Point the camera at the package barcode and keep the code in view until the scanner reads it. TrueCal submits a recognized code for lookup.
  4. Wait for the food result. Review the product and serving amount against the package and what you ate.
  5. If the amount needs changing, open the logged food, change Amount eaten, and tap Save changes. For a different correction, use Edit this meal under the saved receipt.

Good to know

Barcodes use nutrition databases, including FatSecret and Open Food Facts. A barcode identifies the packaged product for lookup. It does not photograph the printed nutrition panel.1

You can photograph the nutrition label with Pro by selecting Food label in the camera. That reads the package directly and is a separate way to supply nutrition information.1

Barcode logging needs Pro and an internet connection to process the meal. Nutrition results are estimates, so review the logged food and portion rather than treating a scanned code as a guarantee.1

Questions and answers

Do I need Pro to scan barcodes?

Yes. Barcode scanning is included with Pro. Free accounts can enter calories manually and use daily and weekly views.1

Does scanning a code read the label?

No. A barcode lookup uses nutrition databases. Use a nutrition label photo when you want to supply the printed panel from the package.1

Can I change the amount after scanning?

Yes. Logged portions and items can be edited. Open the saved food to change its amount, then review the updated entry.1

Get TrueCal

Use TrueCal on iPhone or Android. Review the available plan and offer in the app.

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Sources

  1. Official TrueCal facts. TrueCal. 2026.