# Sider

> AI sidebar for the browser with many models and mobile apps

Sider is an AI assistant from Vidline Inc. built around a browser sidebar for Chrome, Edge and Safari, with apps for iOS, Android, Windows and Mac under the same account. It gives access to GPT, Claude, Gemini, Grok, DeepSeek and other models for chatting, searching, reading, writing and translating in the context of the page you are on, and adds a knowledge base called Wisebase. It is free to install, and paid plans are sold as subscriptions.

- **Category:** AI Assistants
- **Made by:** Vidline Inc.
- **Website:** https://sider.ai
- **Runs on:** Browser extension, macOS, Windows, iOS, Android
- **Facts last checked:** Oct 5, 2026

## Pricing

Sider has a free plan. Paid plans start at $9.99 per month (Basic, US App Store); a mobile Pocket Plan is $49.99 per year.

- **Pricing model:** Free plan
- **Free plan:** The iOS app is free to download and the Chrome extension lists free multi-chatbot support. Neither store listing says how much usage the free tier includes.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Free | $0 | The apps and the browser extension are free to install. The store listings do not state how much usage is included without a plan. |
| Pocket Plan | $49.99 per year (US App Store in-app purchase) | A plan for mobile use. Sider's reply to an App Store review says Pocket credits cannot be used in the desktop browser. |
| Basic | $9.99 per month (US App Store in-app purchase) | Listed as Sider Basic Plan Monthly. The App Store listing does not describe what the plan includes. |
| Pro | $19.99 per month (US App Store in-app purchase) | Listed as Sider Pro Plan Monthly. The App Store listing does not describe what the plan includes. |
| Unlimited | $39.99 per month, or $299.99 per year (US App Store) | Listed as Sider Unlimited Plan, monthly or yearly. The App Store listing does not describe what the plan includes. |

Read from https://apps.apple.com/us/app/sider-chat-work-with-all-ai/id6446394143 on Oct 5, 2026. Prices change, so confirm with Sider before buying.

## Ways to pay less

- **Unlimited costs less when paid yearly** (Annual discount): The US App Store lists the Unlimited plan at $39.99 a month or $299.99 a year. Twelve monthly payments come to $479.88, so the yearly price is about 37% lower. Source: https://apps.apple.com/us/app/sider-chat-work-with-all-ai/id6446394143

## Key features

- **Sidebar with many models:** The extension opens a side panel on any tab for chatting with GPT, Claude, Gemini, Grok, DeepSeek and other models. A Fusion model picks a model for each request automatically.
- **AI group chat:** Put the same question to several models in one chat by @-mentioning them, then compare their answers as they arrive.
- **Chat with files and pages:** Ask questions about PDFs, images, audio files, a web page or several open tabs. The mobile app accepts more than 30 file formats as well as images and URLs.
- **Reading and video summaries:** Summarizes articles, web pages and PDFs, and condenses YouTube videos into highlights, with bilingual subtitles available while watching.
- **Writing and translation:** Offers writing help in any input box, rewording and tone changes, a grammar checker, and translation of selected text, full pages, PDFs and images into 50+ languages.
- **Wisebase and Sider Claw:** Wisebase is a knowledge base for uploaded files and saved websites. Claw, in the mobile app, takes a request and researches, compares, extracts and compiles the results.

## Good for

- People who want an AI side panel on every browser tab
- Comparing answers from several models in a single chat
- Summarizing and translating pages, PDFs and YouTube videos

## Worth knowing

- Sider's website answers automated readers with a security check, so the prices here are US App Store in-app prices and web prices may differ.
- The store listings do not say how much usage the free tier includes or what each paid plan adds.
- Sider told an App Store reviewer that the Pocket Plan is for mobile use and that its credits cannot be spent in the desktop browser.
- The App Store also lists legacy Basic subscriptions and a $40.00 Plus plan without describing them, and Google Play shows items from $9.99 to $999.99.

## What people say

- **App Store rating of the iPhone and iPad app:** 4.7 out of 5 from 4,298 ratings in the United States, read Oct 5, 2026. This is the store's rating of the app, not a score from ToolGPA. Source: https://apps.apple.com/us/app/id6446394143

## Works with

Gmail, YouTube, Google Search, Bing, DuckDuckGo, Quora, Stack Overflow, LinkedIn

**Tags:** Chat assistant, AI search, AI agents, Grammar & style, AI features

## Alternatives

- [Monica](https://toolgpa.com/tools/monica): AI assistant with many models, built around a browser sidebar. [Compare](https://toolgpa.com/compare/monica-vs-sider)
- [Merlin](https://toolgpa.com/tools/merlin): AI sidebar extension with models from several labs in one account. [Compare](https://toolgpa.com/compare/merlin-vs-sider)
- [ChatHub](https://toolgpa.com/tools/chathub): Ask several AI models one question and compare answers side by side. [Compare](https://toolgpa.com/compare/chathub-vs-sider)
- [Poe](https://toolgpa.com/tools/poe): One app for chatting with AI models from many different labs. [Compare](https://toolgpa.com/compare/poe-vs-sider)
- [ChatGPT](https://toolgpa.com/tools/chatgpt): OpenAI's general-purpose AI assistant for chat, images and voice. [Compare](https://toolgpa.com/compare/chatgpt-vs-sider)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 5, 2026:

- https://apps.apple.com/us/app/sider-chat-work-with-all-ai/id6446394143
- https://chromewebstore.google.com/detail/sider-chat-with-all-ai-gp/difoiogjjojoaoomphldepapgpbgkhkb
- https://play.google.com/store/apps/details?id=ai.sider.ChatGPT.android&gl=US&hl=en_US

Page: https://toolgpa.com/tools/sider
Listed by ToolGPA (toolgpa.com).