Private Calorie Tracker: No Account, Works Offline

A private calorie tracker is one that does not need an account, does not keep your food log on its maker's servers, and runs any AI on your phone rather than in the cloud. Silent does all three on iPhone, and it works offline. You do not have to take our word for any of this, though: you can check any calorie app in about two minutes from its App Store page.

Four questions to ask of any calorie app

1. Does it need an account? An account ties your log to your email address. It is what lets an app sync to a website or an Android phone, and it is also what makes the log about you rather than about a phone.
2. Where is the log kept? On the company's servers, or on your device and in your own cloud storage? The first makes web access easy. The second means the company never holds your eating and weight history.
3. Where does the AI run? Photo recognition and AI chat usually run on a server, so your meals or questions are sent there. On-device AI, such as Apple Intelligence, does the work on the phone.
4. What does the privacy label say? Every App Store page has an App Privacy section with up to three headings: Data Used to Track You, Data Linked to You, and Data Not Collected.

Reading the App Store privacy label

"Tracking" has a specific meaning here. Apple defines it as linking data from an app with data from other companies' apps and websites for targeted advertising or ad measurement, or sharing it with data brokers. Data Linked to You is data the developer collects and connects to your identity. Data Not Collected means the developer declares it collects nothing. The labels are the developer's own statements, and Apple says so on every page.

Here is what the labels said on 25 September 2026, on the US App Store:

• MyFitnessPal: Data Used to Track You lists identifiers and usage data. Data Linked to You includes health and fitness data.
• Lose It: Data Used to Track You lists contact info, identifiers and usage data.
• Cronometer: Data Used to Track You lists contact info, identifiers and usage data.
• MacroFactor: no Data Used to Track You section. Data Linked to You includes health and fitness data, contact info and identifiers.
• Silent: Data Not Collected.

To be fair to the others: none of them lists your health data under tracking, and holding your log on a server is how they offer web and Android apps. It is a trade-off, not a scandal. It is still worth knowing which side of it you are on.

Does it work offline?

Silent does not need a connection for anything you do every day. Its food table of about 200 common foods is built into the app, and meals it does not recognize are estimated by Apple Intelligence on the phone. Saved meals, your targets, charts, habits and the fasting timer all work in airplane mode. When you are back online, iCloud syncs your other devices. Apps whose food database lives on a server generally need a connection to search it.

What privacy costs you

Being honest about the trade-offs:

• No web app and no Android. Without a server, there is nothing for a website to log in to.
• No account to recover. Your safety net is your iCloud. If iCloud is off for Silent and your phone is lost without a backup, the log goes with it.
• A smaller food table. About 200 common foods plus on-device estimates, rather than a crowd-sourced database of millions of entries. Packaged foods are estimated, not scanned.
• Export is partial. Settings exports your profile, habits and daily totals as JSON, not every individual food entry.

If those are deal-breakers, the comparison page sets out what each of the bigger apps does better. If they are not, Silent is free to try for 7 days, then $9.99 once, with nothing to sign up for. More on how we think about this in your health data belongs to you, and on logging without a barcode scanner in type what you ate.

Sources

• Apple. User privacy and data use, including the definition of tracking.
• Apple. App privacy details on the App Store.
• App Store listings for MyFitnessPal, Lose It, Cronometer, MacroFactor and Silent, App Privacy sections, read 25 September 2026.

Questions