SumizAI vs Vanish Private AI

What Vanish Private AI is

What Vanish Private AI is

Vanish Private AI Chat, built by Startpage — a company known for its private web search engine — is a conversational assistant available on iOS, iPad, and Android, built around one consistent promise: it never logs IP addresses or chat content, and every conversation is saved only locally on the user's device, never on the provider's servers. This approach brings to the world of AI assistants the same privacy philosophy that has defined the Startpage brand in web search for years.

Key features

No logging of IP addresses or query content means even the company behind the app has no access to what users ask — a fundamental difference from most popular AI assistants, which by default store conversation history on their servers. Local-only conversation storage on the device gives users full control over what happens to their chat history — nothing reaches the cloud without explicit consent. Availability on iOS, iPad, and Android lets people use the app across different mobile devices, though there's no native desktop version. A simple, conversational chat interface keeps the focus on the conversation itself, without the distracting extras typical of more elaborate assistants.

Who it's for

Vanish Private AI appeals to people for whom the privacy of AI conversations is a higher priority than the number of available features — users already relying on Startpage's private search who want a consistent, private experience in AI chat as well. People concerned about how large tech companies use assistant conversation history for model training or ad profiling find in Vanish an alternative designed from the ground up to minimize its data footprint.

Use cases

In practice, Vanish Private AI works well when a user wants to ask the assistant about a sensitive topic — health, personal finances, legal matters — without worrying the conversation will land on a company server and stay there. Someone used to Startpage as their default search engine can naturally reach for Vanish as an extension of the same privacy philosophy in everyday AI conversations. Someone testing different AI assistants for their privacy policy can use Vanish as a benchmark for a "zero logging" approach.

Pricing and business model

Vanish Private AI runs on a freemium model — the basic version is available at no cost, with the option to expand functionality in a paid plan. A business model built around privacy as the main differentiator, rather than selling user data, fits with the rest of Startpage's offering, which has spent years building a brand around the promise of no tracking.

Limitations and what to watch for

Availability limited to mobile devices (iOS, iPad, Android) means no browser or desktop version, which can be inconvenient for users who work mainly on a computer. Storing conversations only locally on the device has a cost — with no sync or backup of its own, losing the phone means losing the conversation history, unlike assistants that store data in the cloud.

AI notes with local-only storage

Because Vanish Private AI keeps everything local on the device and offers no export to an outside notebook, preserving a valuable answer as an ai notes entry requires manually copying a conversation fragment and pasting it into a separate app on the same device. For privacy-conscious users, that solution stays consistent with the app's philosophy — data doesn't leave the phone without an explicit user action — but it means an extra, manual step for every ai notes entry worth keeping longer term.

Trust built on reputation

Startpage has spent years building its brand on one simple promise in web search — no tracking, no profiling. Vanish Private AI carries that same promise into the world of AI conversations, which for people who already trust Startpage in a search context is a natural extension of trust to a new product from the same company, rather than having to evaluate an unfamiliar brand from scratch. People who once had the unsettling experience of seeing an ad related to something they recently asked an AI assistant about especially appreciate this architecture — there's no bridge here between chat history and an advertising system, because the history simply never leaves the device.

Simplicity as a deliberate choice

At a time when many competing AI assistants keep adding more features — image generation, web browsing, long-term memory — Vanish sticks to a simple chat interface focused solely on conversation. That simplicity can sometimes be a limitation for users looking for more elaborate tools, but for people prioritizing privacy over feature count, it's consistent with the rest of the app's philosophy — fewer features also means fewer potential data-leak vectors.

What's worth checking before choosing

Before making Vanish your primary AI assistant, check whether the lack of cross-device sync will be a problem if you use several phones or tablets, and make sure you're comfortable with the absence of a desktop version.

Mobile privacy and everyday context

The phone is the device on which people ask their most personal questions — on the commute, in a doctor's waiting room, in a private moment at home. The fact that Vanish is designed from the ground up as a mobile app, rather than a desktop tool ported to the phone, means it fits that context well — short, spontaneous questions asked throughout the day, without worrying the content will end up anywhere beyond the device.

Bottom line

Vanish Private AI is a conversational assistant built around maximum privacy — no logging, data local to the device only. Anyone who wants valuable ai notes from such private conversations to land in an organized, portable archive instead of staying trapped on one phone should consider a tool built specifically around that workflow.

Comparison with SumizAI

Vanish Private AI and SumizAI share a concern for privacy but differ in purpose. Vanish is a private conversational assistant for mobile devices, with data kept strictly local. SumizAI turns a conversation with an AI model into ai notes saved as Markdown files in a vault the user owns — also local, also under the owner's full control, but organized and searchable over the long run. Anyone who values the privacy of the conversation itself will pick Vanish; anyone who wants private ai notes from such conversations to build an organized knowledge archive over time will find SumizAI a natural complement.

What SumizAI is

A note-taking application built around a conversation with an AI model. You ask a question, the answer streams back, and the answers worth keeping become Markdown notes — filed into a vault that is a folder on your own disk.

A vault is a directory holding base.md, a generated table of contents up to six levels deep, and a notes/ folder with one .md file per note. Before a note is written it is checked against the ones already there, so the fourth note about the same idea gets merged instead of added. Links between notes are ordinary Markdown links to files that exist.

The model is never ours: you bring your own API key to one of seven providers — Anthropic, OpenAI, Gemini, Groq, OpenRouter, a local Ollama or your own server — and pay that provider directly. A question sends the table of contents plus at most five relevant notes within a 24,000-character budget, and the app shows you which five it used.

Every answer kept this way becomes one of these ai notes, ready to search again months later without hunting back through old chats.

Side by side

Where they differ

• Both mention AI. The difference is whose key it runs on: SumizAI never resells inference — you connect one of seven providers (Anthropic, OpenAI, Gemini, Groq, OpenRouter, a local Ollama or your own server) with your own API key and pay that provider directly. Check what Vanish Private AI does with the model bill before comparing prices.
• Vanish Private AI is freemium: there is a free tier and a paid one, and the line between them is the thing to read before committing. SumizAI has one plan at a dollar a month, so there is no feature held back for a higher tier — and an unpaid account still opens and exports every vault it already has.
• AlternativeTo's description of Vanish Private AI does not mention Markdown, so check what format your notes end up in before you fill it up. SumizAI writes standard .md files to a folder you picked, and an unpaid account can still export all of them.
• Both are run from the EU: SumizAI's operator is registered in Poland and the servers are in Germany.

Which one to pick