# EchoLand

> EchoLand is an AI in your browser’s side panel: a browser extension for Chrome and Chromium-based browsers that support side-panel extensions. It remembers what you read, shows why it thinks so, and takes corrections. It is free to start, with Go, Pro and Max plans for more.

Bookmarks remember where. Notes remember what. EchoLand remembers why — and shows you how it knows.

## Use EchoLand to
- Find any page you’ve read
- Tidy Obsidian, painlessly
- Ask your own history
- Connect dots you missed
- See the receipts
- Fix a wrong guess in one tap
- Pick up where you left off
- Keep your data yours

## Features
- **Adaptive Home: same extension, different home.** Home is composed from what you actually read, save and ask. Morning and evening, it adds a brief: the rhythm of your day, what took your time, what’s worth another look, and one thing for tomorrow.
- **Ask: ask the page, or your past.** One box. It decides whether to read the page you’re on, what you read before, your memories or your Obsidian notes — and says what it used, right under the answer. When it’s worth keeping, it becomes a checklist, comparison or timeline. When your own material isn’t enough, Pro and Max search the web too, with sources.
- **Grounding: every insight shows its work.** Every topic it sees in you says why: how many days, where you read about it, what you saved or asked. Answers say what they used, and a topic leads all the way back to the originals.
- **Corrections: wrong guess? One tap fixes it.** A topic that’s off takes one tap to fix: rename it, move unrelated pages out, mark it as just lately, or stop following it. In a chat, “that’s wrong…” or “remember…” works too, and every correction can be undone.
- **Connections: it connects dots you didn’t.** When today’s page meets something you saved months ago, a small capsule at the top of the page tells you — and explains how the two fit.
- **Obsidian sync: writes to Obsidian, reads it back.** Documents it makes land in an EchoLand folder in your Obsidian vault as plain Markdown, sorted by topic. Change a line or tick a box in your note and it updates — and the other way round. You can ask about your notes; every write to a note asks you first.
- **Cards: it picks the shape, you get the point.** A date becomes a calendar tile. A count becomes a big number. A line you wrote comes back as a quote. Ten card shapes, chosen by the content itself — no templates for you to maintain.

## Privacy
- **Stored in your browser.** Memories, evidence and understanding live in a local database inside the extension.
- **The smallest context, only when needed.** A question sends a small, bounded package — never your whole history, never a page’s raw code.
- **Revoke a source, erase its traces.** Switch a source off and everything learned from it is cleared.
- **Screens only on request.** Visual capture happens on demand, and only covers what’s visible.

## FAQ
### What is EchoLand?
An AI that lives in your browser’s side panel. It turns what you read, save and ask into an understanding you can see, question and correct — and builds your home page from it. When your own material isn’t enough, Pro and Max look on the web too.

### Where does my data live?
On your device, in the extension’s local storage. When a question needs a model, only the smallest context needed to answer it is sent to EchoCloud’s cloud model — never your whole browsing history.

### What does it learn from?
Only the sources you allow: saved memories, past chats, collections, and the pages you visit from now on. Each can be switched off, and switching one off clears what was learned from it.

### What if it gets me wrong?
Tell it. Every understanding has Spot on, Not quite, Just lately and Used to. Corrections change what it believes, and you can always see why it thought so.

### Does it work with Obsidian?
Yes, both ways. Documents it makes sync into an EchoLand folder in your vault, sorted by topic, and your edits come back. You can ask about your notes, and every write to a note asks you first. What it understands about you and your browsing never go into the vault.

### Which browsers?
Chrome, and Chromium-based browsers that support side-panel extensions.

### Do I have to pay?
No — install it and use it free (5 questions a day). Go ($10), Pro ($15) and Max ($25), each per 31 days, bring more AI and more features; Pro has 2× Go’s AI usage and Max 6×. Before your first plan you can try Pro for 7 days for $1, or apply for a free trial and get 7 days of Pro once approved.

## Availability
- Plans: Free; Go $10, Pro $15 (2× Go’s AI usage), Max $25 (6×), each per 31 days, paid in USDT or USDC, never renewing on their own. Pro and Max add web search; Max adds scheduled tasks and deep research.
- Free trial: apply at https://next.echoland.app/invitation/waitlist for 7 days of Pro.
- Browsers: Chrome, and Chromium-based browsers that support side-panel extensions.
- Try it: The page at echoland.app embeds the extension’s real interface running on sample data, so you can try it in the browser.

## Links
- Website: https://echoland.app/
- Free trial: https://next.echoland.app/invitation/waitlist
- Contact: hi@echoland.app

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# EchoLand（中文）

> EchoLand 是住在浏览器侧边栏里的 AI：一个适用于 Chrome 及支持侧边栏扩展的 Chromium 内核浏览器的插件。它记得你看过什么，说得出为什么这么想，也听得进你的纠正。免费即可使用，Go、Pro、Max 套餐提供更多额度和功能。

书签记住在哪里，笔记记住是什么。EchoLand 记住为什么——还告诉你，它凭什么这么想。

## 用 EchoLand
- 一句话找回看过的网页
- 无痛整理 Obsidian
- 问问过去的自己
- 连起你没连上的点
- 让每个判断都有出处
- 一键纠正它的误会
- 从上次停下的地方继续
- 把数据留在自己手里

## 功能
- **自适应首页：同一个插件，不同的首页。** 首页由你真实看过、存过、问过的东西组成。早上和晚上，它还会给你一份简报：一天的节奏、占了你时间的事、值得再看一眼的文章，和明天可以做的一件事。
- **问答：问这一页，也问过去。** 只有一个输入框。它自己判断该读当前网页、你看过的内容、存过的记忆，还是你的 Obsidian 笔记——回答下面会注明用了什么。值得留下的，就整理成清单、对比表或时间线。你的内容不够时，Pro 和 Max 还会联网检索，回答附上来源。
- **依据：每个判断，都有出处。** 它理解的每个话题，都写着为什么：看了几天、在哪些地方看的、你存过或问过什么。回答下面注明用到了什么，点进话题能一路追到原文。
- **纠正：猜错了？点一下就改。** 话题不对，点一下就改：改个名字、把不相关的页面移出去、告诉它只是最近感兴趣，或者不再关注。在对话里说「不对，……」「记住……」也行，每次都能撤销。
- **关联：你没连上的点，它来连。** 今天的网页和你几个月前存下的东西有关时，页面顶部会出现一个小胶囊告诉你——并说清两者是怎么对上的。
- **Obsidian 同步：写进 Obsidian，也读得回来。** 它整理的文档按话题，以纯 Markdown 写进你仓库的 EchoLand 文件夹。你在笔记里改一句、勾一项，它就跟着更新；反过来也一样。问 AI 时还能直接问你的笔记，写进笔记前每次都会先问你。
- **卡片：形状它来挑，重点你一眼懂。** 日期变成日历块，数量变成大数字，你写过的句子以引文回来。十种卡片形状，由内容本身决定——不用你维护任何模板。

## 隐私
- **存在你的浏览器里。** 记忆、证据和理解，都存放在插件内的本地数据库。
- **只发最小上下文。** 一次提问只发送一个有界的小包——不会是全部历史，也不会是网页原始代码。
- **撤回来源，清除痕迹。** 关掉一个来源，它从中学到的一切都会被清除。
- **按需才看屏幕。** 视觉读取只在需要时发生，而且只看可见区域。

## 常见问题
### EchoLand 是什么？
住在浏览器侧边栏里的 AI。它把你看过、存过、问过的东西，变成一份你看得见、问得了、也改得动的理解——再用它为你生成首页。你的内容不够时，Pro 和 Max 还会联网查找。

### 我的数据存在哪里？
存在你的设备上，在插件的本地存储里。需要模型回答时，只把回答所需的最小相关上下文发送到 EchoCloud 云端模型处理，不会上传你的全部浏览历史。

### 它会从哪些来源学习？
只从你允许的来源：已保存的记忆、过去的对话、合集，以及之后访问的网页。每一项都能单独关闭，关闭后从中学到的内容会一并清除。

### 它理解错了怎么办？
直接告诉它。每条理解都有「还真是 / 不对 / 只是最近 / 以前是」。纠正会改变它的判断，而且你随时能看到它当初为什么这么想。

### 能和 Obsidian 一起用吗？
可以，而且是双向的。它整理的文档会按话题同步到仓库的 EchoLand 文件夹，你在笔记里的修改也会同步回来；问 AI 时可以直接问你的笔记，写进笔记前每次都会先问你。它对你的理解和浏览记录不会写进仓库。

### 支持哪些浏览器？
Chrome，以及支持侧边栏扩展的 Chromium 内核浏览器。

### 要付费吗？
安装后就能免费使用（每天 5 次提问）。Go（$10）、Pro（$15）、Max（$25），均为 31 天一期，提供更多额度和功能；Pro 的 AI 额度是 Go 的 2 倍，Max 是 6 倍。第一次开通前，可以用 $1 体验 7 天 Pro，也可以申请免费试用，通过后获得 7 天 Pro。