Carb Manager vs Sunn

Short answer

Pick Carb Manager if you want a dedicated app. Pick Sunn if you would rather log by sending a message in WhatsApp than open another app.

Side by side

Where you use it

Carb Manager: iOS, Android and the web

Sunn: Inside WhatsApp (and a web chat)

How you log a meal

Carb Manager: Scan or speak to log and edit entries; photo logging is in Premium

Sunn: Send a photo or type it in the chat

Barcode scanning

Carb Manager: Not listed

Sunn: No

Free trial

Carb Manager: No trial terms stated on the page checked

Sunn: 7-day free trial

Price

Carb Manager: Not listed on its website; see the app store

Sunn: $14.99 a month, or $79.99 a year

Coaching in the chat

Carb Manager: Not listed on the page checked

Sunn: Daily summaries, weekly reviews, answers to food questions

Carb Manager details read from its own site on 2026-10-13. Features and prices change; check the source before you decide.

Where Carb Manager is the better choice

  • Built around low-carb and keto, with a macros tracker and a weekly meal planner with grocery lists.
  • Tracks ketones, blood glucose, insulin, intermittent fasting and glycemic load.
  • Recipe database, Keto Academy and a community forum.
  • Syncs with Fitbit, Garmin, Apple Health and Google Fit.

Where Sunn fits

Sunn is for people who quit tracking because logging felt like homework. You send a photo or type what you ate, and the reply comes back in the same chat. If a portion is off, you correct it by replying.

It also sends an evening summary on days you log and a weekly review. Photo estimates are approximate, and there is no barcode scanner. How a WhatsApp tracker works, and where it falls short →

See your calorie and protein target first

The free quiz shows both targets before it asks for anything else.

Take the free quiz

Common questions

Is Sunn an alternative to Carb Manager?

For tracking calories and macros, yes, with a different shape. Carb Manager is a low-carb and keto diet tracker, offered as an app and on the web. Sunn works inside WhatsApp, so there is no separate app to open. It has no barcode scanner.

Is Sunn cheaper than Carb Manager?

Carb Manager does not list a price on its website, so compare in the app store. Sunn is $14.99 a month, or $79.99 a year after a 7-day free trial.

Can I use both?

Yes. Some people use a database app when they need label-exact numbers and a chat tracker for the everyday habit. Nothing about Sunn stops you from keeping another app.