# A MyFitnessPal alternative you never have to open.

Nexus is a free calorie log that lives inside ChatGPT and Claude. Tell the chat what you ate, or send a photo, and it's saved with your day's totals.

Source: https://nexus.kushalsm.com/myfitnesspal-alternative/ · Updated 2026-10-27

## Why people leave MyFitnessPal

The features that make logging fast are paid. The barcode scanner is Premium. So are Meal Scan and Voice Log. Premium is $19.99 a month or $79.99 a year ([MyFitnessPal Premium](https://www.myfitnesspal.com/premium), checked 15 October 2026).

And every meal is a search. Find the food in the database, then guess the serving. That work is why most people are gone from their food log within ten weeks ([Turner-McGrievy et al.](https://pmc.ncbi.nlm.nih.gov/articles/PMC6856872/)).

## How logging works in Nexus

You don't open a calorie app. You tell ChatGPT or Claude what you ate, in the chat you already have open.

> Breakfast was Greek yogurt with a scoop of whey and a banana.

> Log this (photo of your plate). I ate about half the rice.

> Chicken burrito bowl from Chipotle, no sour cream.

The assistant estimates it, Nexus saves it, and your day comes back as a card with calories and protein against your goals. Workouts and body weight go in the same log.

[![ChatGPT camera, two words, saved. Real ChatGPT recording from 15 October 2026 ending on the real Nexus card.](https://nexus.kushalsm.com/assets/why/nexus-camera-to-card.jpg)](https://nexus.kushalsm.com/assets/why/nexus-camera-to-card.mp4)

*ChatGPT camera, two words, saved. Real ChatGPT recording from 15 October 2026 ending on the real Nexus card.* Video: https://nexus.kushalsm.com/assets/why/nexus-camera-to-card.mp4

## Nexus vs MyFitnessPal

| | MyFitnessPal | Nexus |
|---|---|---|
| Where you log | Its own app | Inside ChatGPT or Claude |
| Photo logging | Meal Scan, Premium | Included |
| Voice logging | Voice Log, Premium | Included: dictation and ChatGPT voice |
| Describe a meal in words | Voice Log, Premium | Yes, that's the main way |
| Barcode | Premium | Not needed: photo the label |
| Price (US) | Premium $19.99/month or $79.99/year | Free |

The full table, with Lose It!, Cal AI, MacroFactor and Cronometer, is on [Nexus vs the calorie apps](https://nexus.kushalsm.com/compare/).

## No barcode scanner? Photograph the label

A barcode is a lookup key for numbers copied from the package label. ChatGPT and Claude read the label itself from a photo, so you get the source numbers instead of a database copy. More in [you don't need a barcode scanner anymore](https://nexus.kushalsm.com/blog/you-dont-need-a-barcode-scanner/).

## What about MyFitnessPal in ChatGPT?

MyFitnessPal has a ChatGPT plugin. Its listing describes it as meal plans, recipes and nutrition guidance. Logging still happens in the MyFitnessPal app. Nexus is the log itself: what you tell ChatGPT is saved, shown as a card, and readable later from ChatGPT or Claude.

## Switch in one minute

1. Add Nexus: the [ChatGPT plugin](https://chatgpt.com/plugins/plugin_asdk_app_6a493b5778c48191a691705785c6feba) or the [Claude connector](https://claude.ai/directory/nexus-fitness).
2. Sign in when the chat asks.
3. Say what you ate.

Step-by-step: [track calories in ChatGPT](https://nexus.kushalsm.com/track-calories-in-chatgpt/) or [in Claude](https://nexus.kushalsm.com/track-calories-in-claude/).

## Questions

### Is Nexus a free MyFitnessPal alternative?

Yes. Nexus is free, and photo and voice logging are included.

### Does Nexus have a barcode scanner?

No. Photograph the nutrition label instead. ChatGPT and Claude read the numbers straight from it.

### How accurate is it?

ChatGPT and Claude estimate meals about as accurately as a hand-kept food diary, according to a [2025 study](https://nexus.kushalsm.com/blog/how-accurate-is-ai-calorie-counting/). Every meal on the card is editable if you know better.

### Can I log workouts and weight too?

Yes. Workouts and body weight go in the same log as your meals, and you can ask about any of it later.

### Can I try it before switching?

Yes. The [sandbox](https://nexus.kushalsm.com/try/) runs the real tools and the real card with throwaway data, no account needed.