Oasis Browser Privacy Review for Solo Freelancers (2026)

Oasis Browser, the new privacy-first AI browser from Kahana that launched on Product Hunt this week, sits on a paradox. The pitch is calming: a “private by default, transparent by design” browser you can train without giving up control. The privacy policy tells a more layered story. For a solo freelancer who plans to use Oasis for client research, contract review, or anything involving paid client data, the question is whether the marketing promise survives contact with the actual data flow. Verdict preview: use with caution, and only after you’ve read our review methodology and reconfigured the defaults.

What Oasis Browser does with your data

Oasis Browser is built by Kahana Group Inc. The company collects standard account information when you register, including your name, email address, an optional profile picture, your subscription tier, and your payment details processed through Stripe (per Kahana’s privacy policy, retrieved 2026-05-27). It also logs invitation history and customer support communications.

The more interesting data flow is the AI assistant itself. The policy states that when you connect third-party AI integrations — OpenAI, Anthropic, or Google are named explicitly — chat data is shared with those AI partners when necessary to make the feature work. That means the prompts you type into Oasis, plus whatever context the browser sends along with them, leave Kahana’s environment and land in the data systems of the underlying large language model providers, each governed by their own privacy policies and retention windows.

On the analytics side, Kahana uses Mixpanel and PostHog to understand product usage. The homepage promises that interaction data is anonymized by default and that identifying information is only attached if you opt into personalization in Settings. The privacy policy itself confirms the company does not sell personal data, but does share it with hosting providers, payment processors, analytics tools, and AI partners as described above.

Data is stored on US-based servers, with international transfers governed by user consent at the time of sign-up. Retention is described in functional rather than fixed terms: the company keeps data only as long as necessary to deliver the service or meet legal obligations, with the exact window depending on the data type and the user relationship. There is no explicit, named “training data opt-out” toggle in the privacy policy for the AI integrations — that opt-out lives downstream, in the policies of OpenAI, Anthropic, or Google, depending on which provider Oasis routes your chat through.

The named third-party sub-processors and the data type each one receives, based on the policy:

• Stripe — payment processing, billing information.
• Mixpanel — product analytics, usage events.
• PostHog — website behavior analytics, visitor interaction.
• OpenAI, Anthropic, Google — chat data and prompt context for the AI assistant integrations you connect.
• Tally — account deletion form submissions.

What this means for solo freelancers

If you’re a solo freelancer or independent consultant, the gap between the “anonymized by default” promise and the AI partner pipeline matters. Here are three concrete scenarios where it bites.

Scenario one: client research with the AI assistant. You ask Oasis’s built-in assistant to summarize a PDF dropped into a client portal — say, a non-disclosure agreement or a quarterly P&L. Based on the policy as written, that prompt and likely the PDF excerpt travel to an AI partner. Even with “anonymized interaction data” defaults, the content of the prompt itself is not anonymized — it carries client names, numbers, and clauses that may be subject to your NDA. The training-data question then defaults to the AI partner’s terms, not Oasis’s.

Scenario two: opt-in personalization toggle left on. The homepage’s reassurance about anonymization explicitly says identifying info is attached “if you opt in to personalization in Settings.” If you flip that toggle to get a more useful assistant, you’ve also told Kahana to associate browsing and prompt patterns with your identifying account — and downstream analytics in Mixpanel/PostHog will see that link. For client-paid work, this approach carries the specific risk that confidential client research becomes correlated with your identifiable profile across the vendor’s analytics stack.

Scenario three: EU client, US-stored data. The policy is upfront that data is processed and stored in the United States, even for European users, and that using the service constitutes consent to that transfer. For EU-based clients with strict data residency requirements written into your contract, that default carries a specific risk: based on the policy as written, you are agreeing on your clients’ behalf to a transatlantic data transfer governed by Kahana’s terms, not your own. Solo freelancers without a DPA should treat that as a contractual question, not a technical one. [INTERNAL_LINK_TO_CLUSTER_ai-privacy-reviews]

None of these three scenarios is unique to Oasis. The same pattern shows up in any AI tool that wraps a third-party model behind a friendly interface. What is distinctive here is the framing. A browser explicitly marketed as “private by default” raises the trust bar; users naturally assume the assistant inherits the same posture as the rest of the product. The chat-data flow does not support that assumption. That mismatch between brand promise and policy detail is the thing solo freelancers should weigh, not the underlying technology, which is otherwise competent.

How to use it safely

If you’ve already downloaded Oasis and want to keep using it for general browsing without exposing paid client work, these are the practical steps. They follow the same logic ATP applies to any AI tool: tighten the defaults the day you install, separate workspaces by data sensitivity, and never paste raw client data into the assistant. Three of the five steps below take less than a minute each.

• Leave the personalization toggle off. Go to Settings and confirm the personalization opt-in is disabled. This is what enforces the “anonymized interaction data” default the homepage advertises. If it’s on, every prompt becomes traceable to your account in the analytics stack.
• Use the Cookie Settings link in the footer. Open the cookie preference center and disable analytics, advertising, and personalization categories. Kahana surfaces this explicitly; most users skip it.
• Keep a separate browser profile for client work. Use Oasis for personal browsing and a different browser — Brave, Firefox with strict mode, or Mullvad Browser — for anything covered by a client NDA. Never paste client PDFs, contracts, or confidential transcripts into the Oasis assistant.
• Redact before you paste. If you must use Oasis to draft a client email or analyze a public document, strip names, dollar figures, and identifiable details first. The AI partner downstream will still see the request; it just won’t see who or how much.
• Submit a deletion request through the embedded form. Kahana uses Tally to process account deletion. Save the confirmation. Confirm the same deletion downstream with OpenAI, Anthropic, or Google if you used those integrations.

Privacy-friendlier alternatives

If Oasis’s AI partner pipeline is a dealbreaker, three alternatives give you stronger guarantees for solo freelance work. None of them is a perfect AI browser replacement — that category is still young — but each closes one of the specific gaps in Oasis’s posture.

Brave Browser (free; Brave Search Premium $3/month). Brave ships with built-in ad and tracker blocking turned on by default, and its Leo AI assistant runs without requiring you to log in — meaning prompts are not tied to an identifiable account. What it gives you that Oasis doesn’t: no account linkage between your AI prompts and your billing identity, and a more mature track record on browser-level tracker resistance. Target user: any freelancer doing client research who wants a single browser for everything and is willing to accept Leo’s narrower feature set.

Mullvad Browser (free, no account required). A joint project between the Tor team and Mullvad VPN, this is a desktop browser stripped of the Tor network requirement and tuned for fingerprint resistance. It has no built-in AI assistant — which is the point. What it gives you that Oasis doesn’t: zero AI partner sharing because there is no AI feature, and the strongest anti-fingerprinting defaults in any mainstream browser. Target user: freelancers handling EU client data, journalism, or anything where avoiding cross-site tracking is non-negotiable. Pair with a separate AI tool like a self-hosted LLM if you need an assistant.

Proton stack (free tier; Proton Unlimited around $10/month). Not a browser, but the right counterpart if your concern is end-to-end account hygiene. Proton Mail, Proton Drive, and Proton VPN keep client communications, file storage, and network traffic out of the same vendor pipelines that ad-supported AI browsers rely on. What it gives you that Oasis doesn’t: zero-knowledge encryption on email and storage, and a Swiss jurisdiction for EU clients who flinch at US data residency. Target user: any solo freelancer whose client contracts mention confidentiality at all. [INTERNAL_LINK_TO_CLUSTER_freelancer-cybersec]

For hardware-backed account security on top of any of these — including Oasis if you decide to keep it for non-client work — a hardware key like the YubiKey 5C NFC blocks the most common account takeover vector and works across Brave, Firefox, Chrome, and the major mail providers.

The verdict

FAQ

Does Oasis Browser train its AI on my prompts?

Based on Kahana’s privacy policy as written, Oasis itself does not train models on your prompts, but it does share chat data with its AI partners — OpenAI, Anthropic, and Google — to deliver the assistant feature. Whether those partners train on the shared content depends on which provider Oasis routes through and the opt-out you have configured directly with that provider, not with Kahana. Check each provider’s enterprise or API terms separately.

Is Oasis Browser safe for HIPAA-regulated client data?

The Kahana privacy policy does not name HIPAA, does not advertise a Business Associate Agreement, and routes chat data through third-party AI providers. Based on the policy as written, Oasis is not positioned for HIPAA-covered work. Solo freelancers handling protected health information should treat this as out of scope until Kahana publishes a BAA. For PHI workflows, a self-hosted LLM or a vendor with an explicit BAA is the cleaner path.

Is Oasis suitable for EU clients with strict data residency?

Kahana stores data on US servers and treats use of the service as consent to international transfer. For EU clients with contractual data residency requirements, that default carries specific risk — particularly when the chat-data pipeline also crosses into the US-headquartered AI partners. Solo freelancers should review the data processing addendum the client requires and confirm Kahana offers an equivalent before processing EU personal data through Oasis.

Does Oasis sell my browsing data to advertisers?

The privacy policy states clearly that Kahana does not sell personal data. The homepage adds that interaction data is anonymized by default and only personalized if you opt in. Both of those claims are aligned. The distinct question — whether the data shared with AI partners is later used by them for advertising or model training — is governed by OpenAI, Anthropic, or Google’s terms, not Kahana’s. That is where the actual exposure sits.

How do I delete my Oasis Browser account and data?

Kahana offers an embedded deletion form on its “Delete my account” page, processed through Tally. Submit the form and save the confirmation. For any AI-partner-side traces — OpenAI, Anthropic, Google — you must submit a separate deletion request directly with each provider whose integration you connected. Kahana cannot delete data that has already left its environment.

Sources

• Kahana Privacy Policy — retrieved 2026-05-27, last updated by Kahana 2026-05-24
• Kahana / Oasis Browser product homepage — retrieved 2026-05-27
• Oasis Browser for Mac on Product Hunt — posted 2026-05-13, launch follow-up 2026-05-27

Reviewed by Jérémy, founder of AidTaskPro and GreenBudgetHub. Based in central France. Privacy posture sourced from public policies and vendor documentation as of 2026-05-27.