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, 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.).
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.
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.
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.
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
- Add Nexus: the ChatGPT plugin or the Claude connector.
- Sign in when the chat asks.
- Say what you ate.
Step-by-step: track calories in ChatGPT or 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. 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 runs the real tools and the real card with throwaway data, no account needed.