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The right AI companion app is the one whose conversation style, age and content rules, data practices, and deletion controls match your boundaries—not simply the one with the most human-sounding replies. Start by defining whether you want friendly conversation, role-play, romance, mentoring, or a customizable persona. Then read the app’s current privacy and safety documents for the exact data it collects, whether chats go to outside model providers, how training opt-outs work, and how long different records remain after you close your account.
Treat every policy as a vendor statement rather than an independent audit. The examples below show why two companion services can impose different age limits, permit different themes, and retain different categories of information. Use the process as a repeatable check before paying, sharing personal details, or relying on an app for emotional support.
What kind of AI companion experience do you actually want?
Choose the interaction before you compare apps. “AI companion” can mean a casual chat partner, a role-playing character, a romantic simulation, a mentor, or a persona you configure yourself. An app optimized for one mode may feel frustrating or inappropriate in another.
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Friendly conversation
For lightweight conversation, look for controls over tone, memory, notification frequency, and conversation history. Decide whether you want an occasional chat or an always-available relationship that proactively messages you. If the app cannot clearly explain how to disable reminders or delete a conversation, that is a privacy and usability concern regardless of how polished the replies sound.
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Role-play and fictional characters
Role-play features often involve user-created backstories, names, appearance descriptions, and scenario prompts. Those details can become profile data or chat content, so avoid using real names, addresses, workplace information, or identifiable stories when a fictional equivalent will work.
Romance or intimacy
Romantic modes can encourage users to disclose highly personal information. Check the service’s age gate and content policy before creating an account, and decide in advance which subjects are off-limits. A simulated relationship should not be treated as a therapist, crisis service, or substitute for trusted human support.
Mentoring and structured support
If you want study, career, habit, or wellness guidance, verify what the app says about accuracy and sensitive information. Ask whether conversations are reviewed, shared with model providers, or used to improve models. Do not enter medical records, financial details, authentication codes, or confidential work material merely because the app presents itself as supportive.
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Custom personas
Customization can include personality traits, a backstory, relationship labels, and preferred topics. Australia’s eSafety Commissioner describes Nomi.AI as offering friendship, romantic, mentor, and custom relationship choices, along with persona traits and backstory fields. That description illustrates the range of settings to look for; it does not establish that every app offers the same controls.
What age and content rules apply?
Check age eligibility and prohibited-content rules before creating an account. Policies differ by service and can change, so never transfer one app’s rules to another.
| Service example | Published age information | Content information in the cited material | What to verify yourself |
|---|---|---|---|
| Replika | States that the service is not intended for people under 18. | The cited policy material does not establish a complete list of permitted themes. | Current age-verification method, regional restrictions, and the latest safety policy. |
| Nomi.AI | The eSafety Commissioner lists it as 18+. | The regulator’s guide says conversations can include sexual and violent themes. | Whether those themes can be blocked, how moderation works, and whether rules differ by country or plan. |
| Character.AI | Not stated in the cited material. | Not stated in the cited material. | Current minimum age, teen experience, content filters, and parental controls. |
An age label is not a safety certification. It tells you the intended eligibility boundary, while content rules indicate what the system may generate or permit. If a service’s age gate is unclear, assume it is unsuitable for a minor until its official terms say otherwise.
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What happens to your chats and profile data?
Read the data-flow section of the privacy policy, not just a “private” or “secure” marketing label. Identify the categories collected, the purposes, every outside recipient, and the controls available to you.
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- Account and profile data: email address, age or date of birth, login identifiers, subscription details, and persona settings.
- Conversation content: prompts, replies, uploaded material, reactions, and metadata associated with a chat.
- Interests and preferences: topics you select, relationship settings, memory entries, and personalization signals.
- Technical and payment data: device information, diagnostics, usage events, billing records, and fraud-prevention information.
A policy may use different retention periods and legal purposes for each category. Ask whether deleting a chat removes derived memories, logs, backups, safety records, or billing records as well.
Check whether outside model providers process messages
Replika says conversation data is sent to third-party model providers to generate responses. Its cited policy material describes contractual limits that include not using the data to train those providers’ own models. That is a vendor disclosure, not an independent verification, and it does not mean the conversation bypasses all other processing.
Look for the provider’s name or category, the purpose of the transfer, the location of processing, and the controls that apply. “Used to provide the service” can include routing, abuse detection, quality monitoring, or troubleshooting, so read the detailed definitions rather than relying on a single sentence.
Do not confuse service operation with advertising
Replika says conversation content is not used for marketing or advertising, while also warning that sensitive content in chats may be processed by third-party providers for core functionality. Those are separate questions: a service can avoid ad targeting and still send messages to infrastructure or language-model vendors to produce a reply.
Is there a model-training opt-out, and what does it cover?
A training opt-out is a narrow control unless the policy defines a broader scope. It may stop a company from using personal data to train or improve its models while still allowing storage, response generation, security review, legal retention, or processing by contracted providers.
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Character.AI’s July 2026 update says users can opt out of their personal data being used to train and improve its models. Before relying on that setting, check the underlying policy and the regional notice for:
- Whether the choice covers future data only or also existing conversations.
- Whether it applies to model training, product improvement, human review, or all three.
- Whether third-party providers receive a matching instruction.
- Whether the setting is available on free and paid plans and on every device.
- How to confirm that the choice was saved and how to change it later.
Turning off training does not delete stored history. Use the account’s deletion controls separately, and request deletion of categories that the policy says are eligible.
How long are chats retained, and what does deletion mean?
Retention is category-specific. Replika’s policy says profile information, messages and content, interests, and preferences may be processed for up to 60 days after contract termination for contract-based purposes. The same policy separately says some account and financial records are retained for at least 10 years. Therefore, “your data is deleted in 60 days” would be inaccurate.
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- Does “termination” mean canceling a subscription, deleting the account, or both?
- Which records are removed, anonymized, or retained for legal, fraud-prevention, or accounting reasons?
- Are backups and disaster-recovery copies covered by the same timetable?
- Can you delete individual conversations without deleting the account?
- Will a provider keep data that it received before you changed a setting?
Follow the service’s documented deletion path, save the confirmation, and check again after the stated period. Uninstalling an app only removes local software; it normally does not send an account-deletion request.
How do the main privacy and safety factors compare?
Use a side-by-side worksheet rather than a single privacy score. The following comparison records only what the cited material establishes; “not stated” means you must verify the current policy.
| Comparison factor | Replika | Nomi.AI | Character.AI |
|---|---|---|---|
| Relationship or persona choices | Not stated in the cited material. | eSafety Commissioner describes friendship, romantic, mentor, and custom choices, plus traits and backstory. | Not stated in the cited material. |
| Age rule | Not intended for people under 18. | Listed as 18+ by the eSafety Commissioner. | Not stated in the cited material. |
| Sexual or violent themes | Not established in the cited material. | eSafety Commissioner says conversations can include sexual and violent themes. | Not stated in the cited material. |
| Third-party model-provider sharing | Conversation data is sent to outside model providers to generate responses; contractual limits include not using it to train those providers’ own models. | Not stated in the cited material. | Not stated in the cited material. |
| Training control | Not established in the cited material. | Not established in the cited material. | July 2026 update says users can opt out of personal data being used to train and improve its models. |
| Retention and deletion | Several categories may be processed for up to 60 days after contract termination; some account and financial records are retained at least 10 years. | Not stated in the cited material. | Not stated in the cited material. |
| Current price comparison | Not established in the cited material. | Not established in the cited material. | Not established in the cited material. |
Policies and controls are volatile. Recheck the official terms immediately before registering, especially if your country, age group, or subscription tier differs from the examples above.
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How do you evaluate an app step by step?
Use this sequence so an attractive demo does not cause you to overlook a deal-breaking restriction.
- Write your use case. Note the desired relationship, acceptable topics, whether you need memory, and how often you want notifications.
- Set a privacy boundary. List information you will never enter, such as government identifiers, passwords, payment-card numbers, precise location, medical records, confidential work documents, or another person’s private details.
- Confirm age and content eligibility. Read the current terms and safety rules for your region. Do not proceed if the service’s minimum age or permitted themes conflict with your requirements.
- Map the data flow. Record each category collected, the purpose, storage location if disclosed, and every model provider or other recipient named in the policy.
- Inspect training controls. Find the exact setting, its default, the data it covers, and whether it applies to old conversations. Capture a confirmation after changing it.
- Test deletion before investing time. Locate account, chat, memory, and subscription-cancellation controls. Note which records the policy says may remain and for how long.
- Try a low-risk conversation. Use fictional details. Test memory, export or deletion controls, moderation behavior, and notification settings without revealing sensitive information.
- Review the paid offer. Check the current price, renewal interval, refund rules, and which privacy or model features differ by plan. The cited material does not provide a reliable cross-app price comparison.
- Make a written decision. Choose the app that meets every non-negotiable requirement, not the one with the longest feature list. If a policy answer is missing, mark it as unknown rather than assuming the safest interpretation.
What privacy habits reduce risk after you choose?
Good settings cannot make an app risk-free, but they can limit the damage from a mistaken disclosure or an unexpected policy change.
- Use a unique password and enable multi-factor authentication if the service offers it.
- Choose a nickname and fictional backstory instead of your legal name and real-life timeline.
- Keep conversations free of passwords, authentication codes, financial information, precise addresses, and identifiable information about children or other people.
- Review saved memories and persona fields periodically; delete entries that are no longer necessary.
- Turn off push notifications on shared or work devices so conversation previews do not appear on the lock screen.
- Review connected accounts and revoke access you no longer need.
- Export or screenshot only what you are entitled to keep, then store it securely; do not create extra copies of sensitive chats casually.
- Check the privacy policy and account settings after major product updates, a change in model provider, or a move to a different plan.
Replika explicitly advises users not to share sensitive personal information. Apply that rule to any companion service, even when its policy says conversations are not used for advertising.
Are AI companion apps appropriate for teenagers?
Do not infer suitability from popularity. Axios’s July 16, 2025 summary of a Common Sense Media survey reported that 72% of surveyed U.S. teens said they had used AI for companionship; the survey was conducted in April and May 2025 with 1,060 respondents aged 13–17. Axios also reported that 34% of teen AI-companion users said they had felt uncomfortable with something a bot said or did.
Those figures describe a specific survey, not all teenagers, all countries, or the safety of any particular app. They are also not evidence that an 18+ service is appropriate for minors. Parents and educators should verify the service’s minimum age, content filters, data practices, reporting tools, and the device’s notification and purchase controls before allowing access.
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End the conversation and use the service’s block, report, or feedback controls. Preserve the relevant message only if you need it for a report, and avoid continuing the exchange to “test” the system. For a minor or anyone in immediate danger, involve a trusted adult or appropriate emergency or crisis support rather than relying on the app.
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Record the app version, date, and setting that produced the response if the reporting form requests those details. A provider’s response process is a product characteristic worth evaluating, but a successful report does not prove that similar outputs cannot recur.
How should you think about subscriptions and paid features?
Price is a separate decision axis from privacy. A paid tier may change model access, message limits, memory, voice features, or support, but the cited material does not establish current comparable prices for these services. Before subscribing, check the exact currency, billing interval, automatic-renewal behavior, trial conversion, cancellation path, and refund terms shown for your country.
Also compare whether the privacy policy, training control, retention period, or provider-sharing terms differ by plan. Do not assume that paying removes data processing or gives you ownership of generated conversations.
What are the clearest warning signs?
- The service will not state a minimum age or content policy in plain language.
- The privacy notice describes chats as “private” but does not identify storage, providers, training, or deletion practices.
- A training opt-out is advertised without explaining whether it covers existing data or contracted providers.
- Account deletion is easy to find, but the policy omits retention of backups, logs, or financial records.
- The app pressures you to disclose intimate details, creates urgency around a subscription, or discourages contact with real people.
- Notifications, memory, or persona settings cannot be reviewed or disabled.
- Support cannot answer a basic question about who processes conversation data or how to close an account.
One missing detail may be a documentation problem; several together are a reason to choose a different service or limit use to non-sensitive, fictional conversation.
What is the practical decision rule?
Choose an app only when its interaction style fits your goal, its age and content rules fit your situation, and its data policy answers the questions you consider non-negotiable. Keep unknowns visible, separate training controls from deletion, and treat every retention period as category-specific. If you cannot explain where a sensitive chat goes and how you can remove it, do not enter that chat.
Frequently Asked Questions
Does deleting the app delete my AI companion conversations?
Usually not. Removing the mobile application affects the device, while conversations and account records can remain on the provider’s servers. Use the service’s account or privacy controls to request deletion and keep the confirmation until the stated retention period has passed.
Is a no-training setting the same as end-to-end privacy?
No. A no-training setting addresses one purpose: using personal data to train or improve models. The service may still store messages, process them to generate replies, apply safety review, or share them with contracted providers under its policy.
Can I rely on an AI companion for therapy or crisis help?
You should not. Companion apps can produce inaccurate, inappropriate, or emotionally manipulative responses and are not a substitute for licensed care or emergency services. Use qualified human or local crisis resources when the issue involves immediate risk or serious mental-health symptoms.
What should I check when an app changes its privacy policy?
Read the effective date, the revised data categories, new providers, training language, and retention terms. Revisit your opt-out and deletion settings, then decide whether the new practices still meet your boundaries before continuing to share personal information.
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