Comparison

Privacy is a data-flow question, not a badge.

“Private” can mean local storage, no account, encryption, or simply a good marketing page. The useful questions are concrete: where does the data live, who can access it, what leaves the device, and can you take it with you?

Privacy checklistLocal-firstExport & deleteDated

Read the data flow, not the slogan.

A privacy label is only useful if it tells you what is stored, what is sent, and what you can delete. This page gives you the questions to ask any app — including ours.

We make Weight Track Assistant. The checklist applies to us too.

Question	Why it matters	What good looks like
Where is the data stored?	On your device, the vendor’s cloud, or both.	The answer is specific, not just “secure.”
Is an account required?	An account creates an identity and a server-side record.	You can use the core app without an account, if that matters to you.
What leaves the device?	Ads, analytics, crash reports, integrations, or backups.	The policy names the categories and the purpose.
Is health data used for ads?	Health data is sensitive and often regulated.	The answer is a clear “no”; ads use device-level metadata only.
Can you export everything?	Portability is part of privacy.	CSV/JSON export and a local backup are available.
Can you delete everything?	Deletion should be real, not just hidden.	There is a clear delete path, including local data.
What happens if you lose the phone?	Local-first means you need a backup.	The app explains backup/export and transfer steps.
Is Health Connect optional?	Platform integrations can read/write health data.	You choose whether to connect, and what to sync.

General product-privacy checklist as of November 9, 2026. It is not legal advice. Read each app’s privacy policy and data safety disclosure.

Three models

There is no free privacy lunch.

Each model has a tradeoff. The right one depends on what you need.

Local-first

Records live on your device. No account is required. You control exports and backups. Tradeoff: device loss and manual transfer are your responsibility.

Cloud account

Records sync through a vendor account. Convenient across devices. Tradeoff: the vendor and its subprocessors can access the data; read the policy and export options.

Ad-supported free

The app is free because ads or analytics support it. Tradeoff: data may be shared with ad/analytics partners. Health data should never be used for ad targeting.

Where ours fits

Local-first, no account, explicit sharing.

This is what Weight Track Assistant does — and what it does not do.

Health records are stored on your device; no online account is required.
Ads receive device-level metadata only, never your health records.
CSV/JSON export, local backup, and a delete-all-data path.
Health Connect integration is optional; you choose what to read or write.
Cloud sync is not part of 4.2; moving phones is manual export/import.

How privacy works Data safety

The tradeoff

Local-first means you own the backup.

No account also means no automatic cloud copy. If you lose your phone without a backup, the data is gone. The app provides export and local backup; using them is your choice. That is the tradeoff for keeping the data off our servers.

Move to a new phone

Limits

What this guide does not do.

A short list, so the scope is clear.

It does not rank every app’s security.
It does not provide legal advice or a compliance certification.
It does not claim that local-first is right for everyone.
It does not replace each app’s privacy policy and data safety disclosure.

Disclosure. Weight Track Assistant is our app. We have a bias. The checklist is written so that it can be used against us, too.

Privacy questions.

What does “local-first” mean?

It means the app stores your records on your device by default, rather than requiring a server account. It can still use the network for ads, optional integrations, or exports you choose — so read the privacy policy, not just the label.

Is a cloud app automatically less private?

No. A cloud app can have strong security, encryption, and access controls. The question is who can access the data, what is shared with third parties, and whether you can export and delete it. A local-first app has a different tradeoff: you are responsible for backups and device transfer.

Does Weight Track Assistant require an account?

No. The app is local-first and does not require an online account. It supports CSV/JSON export, local backup, and manual transfer to a new phone. Cloud sync is not part of 4.2.

Does the app show ads?

The free version may show ads. Ads receive device-level metadata only, never your health records. The privacy policy and data safety page describe the data flows.

What should I ask before trusting a health app?

Ask where data is stored, whether an account is required, what is sent to analytics or ad partners, whether health data is used for advertising, how you export it, how you delete it, and what happens if you lose your phone.

Is this medical advice?

No. It is a privacy and product comparison. It does not diagnose, treat, or recommend a treatment plan.

The local-first option

Keep the record on your phone.

Weight, GLP-1, measurements, nutrition, and export — without an online account.

Get it onGoogle Play How privacy works

1M+ installs since 2013
Current version 4.2
No account required
Free on Android