# Ddict vs Syncia - Power of ChatGPT on any website Ddict records 32,146 monthly visits with +2.4% month-over-month growth and Freemium pricing. Syncia - Power of ChatGPT on any website records 0 monthly visits with — growth and Free pricing. | Metric | [Ddict](https://openaitools.app/tool/ddict) | [Syncia - Power of ChatGPT on any website](https://openaitools.app/tool/syncia) | | :--- | :--- | :--- | | Website URL | https://ddict.me | https://chrome.google.com/webstore/detail/syncia/bhdfllifdfodbkihgmahlfmddlmfdjak | | Categories | AI Translate, AI Writing Assistants, AI Grammar Checker, AI Summarizer | AI Assistant, AI Chatbot, Large Language Models (LLMs), AI Summarizer | | Pricing Model | Freemium | Free | | Monthly Visits | 32,146 | 0 | | MoM Growth Rate | +2.4% | — | | Primary Market | Vietnam | Global | | Direct Visits | 20,961 | 0 | | Review Score | 4.2 | 4.5 | | Saved Count | 3 | 2 | | Supported Platforms | Website | Browser Extension | ## Ddict Ddict has been available since 2011, originally as a Firefox add-on before expanding to Chrome, Edge, Opera and other browsers. The core workflow is simple: highlight a word or sentence, open Ddict, and get an instant translation along with dictionary definitions, pronunciation audio, and text-to-speech. Chosen words can be saved and later reviewed. Beyond quick lookups, Ddict includes a flashcard system with spaced repetition so saved vocabulary turns into a structured study routine. The Ddict AI layer uses large language models to produce more context-aware translations, condense long articles into summaries, and help polish emails and other writing. A grammar and spelling checker flags typos and mistakes as you work. Ddict also offers document and reader features for formats such as PDF, docx and epub, aimed at translating and reading longer texts inside the browser. The project reports hundreds of thousands of monthly users across multiple browsers and positions itself around removing language barriers for reading, learning, and writing. **Pricing & Plans:** Freemium. The browser extension and core translation, dictionary, TTS and flashcard features are described as free forever. AI-powered translation, summarization, and writing assistance are part of the Ddict AI offering, with additional paid tiers implied by the freemium model. - **Instant on-page translation:** Select a word or sentence on any website and translate it in a click or with a keyboard shortcut, without leaving the page. - **Dictionary and text-to-speech:** Get dictionary definitions and hear pronunciation via text-to-speech for the selected term. - **Flashcard vocabulary learning:** Saved words sync automatically into flashcard decks with spaced repetition to build vocabulary. - **AI translation and summarization:** LLM-powered translation with better context, plus summaries that condense long content into key points. - **Grammar, spelling, and writing help:** Checks catch typos and grammar issues, and suggestions help refine emails and other writing. **Strengths:** Free forever core translation and dictionary with a long track record since 2011; Works directly inside websites across many popular browsers; Combines translation with vocabulary flashcards for active learning; AI summarization and grammar checking in the same tool **Limitations:** Best experience depends on installing a browser extension; Advanced AI features sit behind the Ddict AI offering; Some features are tied to supported document formats and browsers [Profile (Markdown)](https://openaitools.app/tool/ddict.md) ## Syncia - Power of ChatGPT on any website Syncia is a browser extension that injects an OpenAI-powered assistant into every web page you visit. Press Ctrl+Shift+X (or your own shortcut) and a sidebar opens where you can ask questions about the page, request rewrites, or brainstorm, all without switching tabs or copying content into a separate chat window. Because it works on top of the current tab, the assistant can be used directly on articles, documentation, emails, forums and web apps. The second core piece is the selection menu. Highlight any passage of text and Syncia shows a small floating toolbar that can summarise it, simplify the language, translate it, check grammar, or adjust length. You can also save your own custom prompts and re-use them from that same menu, which turns favourite instructions into one-click actions. Syncia is fully free and open source, published under the developer's GitHub repository. It does not ship a bundled model or subscription: you connect your own OpenAI API key, so you control the account, the spend and the data flow. Settings are handled on a dedicated configuration page, and the extension declares that it does not collect or sell user data. **Pricing & Plans:** Free and open source. There is no subscription or paid tier; you supply your own OpenAI API key and pay OpenAI for the usage you generate. - **Chat sidebar on any site:** Open an OpenAI-powered chat panel over the page you are browsing using a keyboard shortcut, so you never lose context. - **Selection quick menu:** Highlight text to summarise, simplify, translate, check grammar, or change length from a floating toolbar under the selection. - **Custom prompt library:** Save your own instructions as reusable prompts and trigger them from the quick menu in one click. - **Bring your own API key:** Connect a personal OpenAI key for full control over the account, model choice and usage costs. - **Open source and private:** The code is published publicly, the extension is free forever, and the developer states that no user data is collected or sold. **Strengths:** Completely free and open source, with no paywall or bundled subscription; Works on virtually any website through a sidebar plus a selection toolbar; Custom prompt storage turns repeated instructions into one-click actions; Your own API key means full visibility and control over usage costs **Limitations:** Requires a separate OpenAI API key and an OpenAI account before it is useful; Feature depth and model quality depend entirely on the OpenAI models you choose; Chrome-only, so Firefox, Safari and Edge users are not covered [Profile (Markdown)](https://openaitools.app/tool/syncia.md) ## Frequently Asked Questions ### How do Ddict and Syncia - Power of ChatGPT on any website compare in monthly traffic? Ddict has 32,146 monthly visits, while Syncia - Power of ChatGPT on any website has 0. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? Ddict has a month-over-month growth rate of +2.4%; Syncia - Power of ChatGPT on any website has —. ### How does pricing compare? Ddict: Freemium. Freemium. The browser extension and core translation, dictionary, TTS and flashcard features are described as free forever. AI-powered translation, summarization, and writing assistance are part of the Ddict AI offering, with additional paid tiers implied by the freemium model. Syncia - Power of ChatGPT on any website: Free. Free and open source. There is no subscription or paid tier; you supply your own OpenAI API key and pay OpenAI for the usage you generate. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [ChatGPT](https://openaitools.app/tool/chatgpt-4) | 6,048,022,723 | +2.2% | Freemium | OpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research. | [.md](https://openaitools.app/tool/chatgpt-4.md) | | 2 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides. | [.md](https://openaitools.app/tool/grammarly.md) | | 3 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) | | 4 | [Monica](https://openaitools.app/tool/monica-ai) | 4,512,775 | -11.3% | Freemium | All-in-one AI assistant across web, browser, desktop and mobile | [.md](https://openaitools.app/tool/monica-ai.md) | | 5 | [Sider](https://openaitools.app/tool/sider) | 2,644,740 | -10.6% | Freemium | AI sidebar and browser agent for reading, writing and research | [.md](https://openaitools.app/tool/sider.md) | | 6 | [Language Reactor](https://openaitools.app/tool/language-reactor) | 1,878,769 | +0.6% | Freemium | Learn languages from Netflix, YouTube, and real-world texts with dual subtitles and AI | [.md](https://openaitools.app/tool/language-reactor.md) | | 7 | [Merlin AI](https://openaitools.app/tool/merlin-ai) | 1,382,634 | +13.1% | Freemium | One-click AI assistant for browsing, writing and research | [.md](https://openaitools.app/tool/merlin-ai.md) | | 8 | [HARPA AI](https://openaitools.app/tool/harpa-ai) | 537,461 | +99.3% | Freemium | One browser agent that combines every major AI model with web automation | [.md](https://openaitools.app/tool/harpa-ai.md) | | 9 | [Trancy](https://openaitools.app/tool/trancy) | 438,752 | -57.6% | Freemium, Free Trial | An AI language learning assistant with bilingual subtitles, immersive translation, and vocabulary practice | [.md](https://openaitools.app/tool/trancy.md) | | 10 | [Linguix](https://openaitools.app/tool/linguix) | 227,398 | -4.5% | Freemium | AI grammar checker and writing assistant for teams and professionals | [.md](https://openaitools.app/tool/linguix.md) | --- Source: https://openaitools.app/compare/ddict-vs-syncia More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)