SumizAI vs Thremark

What Thremark is

What Thremark is

Thremark is an AI chat assistant with real memory, built around a simple promise: say something once, and the app will remember it forever, until you change it yourself. Every remembered fact becomes visible as a separate, editable item called a Mark — not a hidden, invisible entry in the model's database, but a concrete, visible object you can review, correct, or delete at any time. That approach differs from most AI assistants, where long-term memory works like a black box — something the model "knows" about you but that you don't see or control directly.

Key features

The Mark system gives every remembered fact its own identity — you can see the full list of what the app knows about you, instead of guessing based on the model's behavior in conversation. Editability and deletability of every Mark mean full control over what stays in long-term memory versus what was remembered incorrectly and needs correcting or removing. Real memory across conversations removes the need to repeat the same information about yourself every time you start a new session with the assistant. Availability on iPhone, iPad, and in the browser online lets you use the same consistent memory regardless of which device you happen to be writing from.

Who it's for

Thremark appeals to people who want real control over what an AI assistant remembers about them, instead of relying on the opaque memory mechanism built into large platforms. Users tired of repeating the same context in every new conversation, and people who value transparency and control over their own data, find something in visible, editable Marks that's missing from standard chatbots.

Use cases

In practice, Thremark works well when a user states their dietary preferences once and then expects every subsequent conversation about recipes or meal planning to automatically take them into account without a reminder. Someone managing several projects at once can review the list of Marks for each project and quickly correct an outdated piece of information instead of re-explaining the change in conversation. Someone who wants to stay privacy-conscious can regularly review exactly what the assistant remembers about them and delete facts that are no longer current or relevant.

Pricing and business model

Thremark runs on a freemium model — the basic version with a limited number of stored Marks is free, while a paid plan unlocks unlimited memory and additional management features. That model lets new users test whether visible, editable memory actually changes how they use an AI assistant before committing to a paid subscription.

Limitations and what to watch for

A system built on discrete Marks, while transparent, requires deliberate management — over time, the list of remembered facts can grow large enough that reviewing and tidying it becomes its own task. The app is available mainly within the Apple ecosystem and online, so Android users without browser access have limited ways to use it on mobile.

AI notes versus visible Marks

Thremark solves the long-term memory problem within the conversation with the assistant itself, but it isn't a full-fledged notes app for building an extensive knowledge archive. Longer, valuable conversation fragments you want to keep as ai notes that go beyond individual facts stored as Marks still need manual copying into a separate notebook, since Marks are designed for short, specific facts rather than long ai notes with the full context of a conversation.

Transparency as the foundation of trust

Many AI assistant users intuitively distrust long-term memory because they have no idea exactly what the model remembered about them or how it knows it. Thremark answers that unease directly — instead of promising "smart memory" in an abstract way, it shows every remembered fact as a concrete item on a list that can be read, judged, and corrected if needed. That shift from invisible memory to a visible list of Marks completely changes the user's relationship with the tool — from cautious distrust to conscious control.

Facts changing over time

Life facts change — a job change, a move, new dietary preferences mean information remembered a month ago might be outdated today. Classic AI memory systems rarely offer an easy way to correct such outdated information, so a model can end up operating on stale data for years. Thremark's Mark system addresses that directly — correcting or deleting an outdated fact takes exactly as long as recording it in the first place, which encourages users to tidy their memory regularly instead of letting it grow unchecked.

Simple form, meaningful consequence

While a single Mark is usually one short factual sentence, dozens of such Marks add up to a surprisingly complete picture of a user's preferences, context, and history that the AI assistant brings into every new conversation. That simplicity of individual pieces combined with depth of the overall picture is one reason Thremark attracts users tired of both the zero memory of standard chatbots and the opaque memory of more advanced but less controllable solutions.

What's worth checking before choosing

Before relying on Thremark fully, it's worth checking the free plan's limits on the number of stored Marks and testing whether the transparent memory management system actually fits your style of using AI assistants.

Bottom line

Thremark gives users a degree of control over long-term memory that's rare in the world of AI assistants — every fact visible, editable, and deletable as a separate Mark. Anyone who wants longer ai notes from AI conversations to coexist alongside such short, visible facts should consider supplementing Thremark with a separate notebook for that purpose.

Comparison with SumizAI

Thremark and SumizAI solve different aspects of memory when working with AI. Thremark gives transparent, editable memory of short facts visible as Marks within the conversation with the assistant itself. SumizAI turns longer, valuable conversation fragments into ai notes saved as full Markdown files in a vault the user owns, with full context rather than a single fact. Anyone who wants control over what a model remembers about them will pick Thremark; anyone who wants to build a searchable archive of ai notes from whole, valuable answers will find SumizAI the tool built for that purpose.

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

• Thremark is a place to have the conversation. SumizAI is not a chatbot — the conversation is the input, not the product. What comes out of it is a .md file with a title, a place in base.md and a duplicate check against the notes already in the vault. If you only want to talk to a model, you do not need SumizAI.
• Thremark 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 Thremark 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.
• Thremark runs in the browser. SumizAI is a desktop and mobile application, and on the desktop the vault is a folder on your own disk rather than a document in someone's cloud.

Which one to pick