AI Ethics & Society · AI Companion Apps

What data do AI companion apps collect about their users?

AI companion apps typically collect the full content of user conversations — often including highly personal disclosures about emotions, relationships, and mental health — along with standard app data like usage patterns and device information, and privacy researchers have specifically flagged the sensitivity of conversational data in this category as a distinct concern.

Medical disclaimer

This page is for general educational purposes only and is not medical advice. It does not replace a consultation with a licensed physician, pharmacist, or other qualified health provider. Always talk to your own care team before starting, stopping, or changing any medication or supplement.

Key takeaways

Conversation content itself is typically the most sensitive data category, since companion app conversations often include disclosures people wouldn't share with a general-purpose app.
Standard app data collection — usage frequency, session length, device information — also applies to companion apps as it does to most consumer apps.
Privacy policies vary significantly between companion apps in terms of data retention, third-party sharing, and use of conversation data for model training.
Because companion apps are designed to encourage emotional openness, the sensitivity of collected data is arguably higher than for typical consumer apps.

Two categories of data

AI companion apps generally collect two broad categories of data, similar to most consumer apps: standard technical and behavioral data (device information, usage frequency, session duration, and similar analytics), and the content of conversations themselves. It’s this second category — the conversation content — that makes companion apps a distinct privacy consideration compared to many other app types.

Why conversation content is especially sensitive

Companion apps are specifically designed to encourage emotional openness and disclosure — that’s core to how they function as a product. As a result, the conversation logs these apps collect often contain far more personal, sensitive material than what a typical app would gather: details about relationships, emotional struggles, mental health, and other disclosures people might not share even with close friends. Privacy researchers have specifically called out this dynamic as a distinguishing concern for the category, separate from generic app data collection.

Variation across the industry

How individual companion apps handle this data varies considerably. Differences show up in how long conversation data is retained, whether it’s used to train or improve AI models (and whether users can opt out), whether data is shared with or sold to third parties, and how clearly these practices are disclosed in privacy policies. Because this is a newer product category, privacy practices and the surrounding regulatory expectations are still evolving.

What users can do

Reviewing an app’s actual privacy policy — rather than assuming standard practices — is the most reliable way to understand what happens to conversation data with a specific companion app. Users concerned about sensitive disclosures may also want to consider what they’re comfortable sharing, given that the same emotional openness the app is designed to encourage is also what generates the most sensitive data being collected.

Bottom line

AI companion apps collect standard app usage data plus the content of often deeply personal conversations, and because these apps are specifically built to encourage emotional disclosure, the resulting data can be more sensitive than what’s typically gathered by consumer apps — making privacy policy review particularly worthwhile for this category.

Go deeper

Important caveats

Specific data practices vary by app and can change over time — always review a specific app's current privacy policy rather than relying on general assumptions.
This is general background information, not a review of any specific app's privacy practices.

Frequently asked questions

Do companion apps use conversation data to train their AI models?

Practices vary by company — some use conversation data to improve their models by default, some offer opt-out settings, and privacy policies differ significantly, so checking the specific app's policy is the only reliable way to know.

Can companion app conversations be subpoenaed or accessed by law enforcement?

As with most stored digital communications, companion app conversation data can potentially be subject to legal requests depending on the jurisdiction and circumstances, similar to other stored personal data — though secondary legal analysis of this specific product category is still developing.

Is it riskier to share sensitive information with a companion app than with a general AI assistant?

Not inherently from a technical standpoint, but companion apps are specifically designed to encourage emotional disclosure, which means users may end up sharing more sensitive personal information than they would with a general-purpose tool.

Sources

[1]Digital wellbeing and privacy research — Common Sense Media
[2]Digital rights and privacy advocacy — Electronic Frontier Foundation

Written by Editorial Team

Last updated July 25, 2026

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