Goodnotes records 3,227,341 monthly visits with +10.8% month-over-month growth and Freemium, Free Trial pricing. Sider records 2,644,740 monthly visits with -10.6% growth and Freemium pricing.
Handwritten notes, PDF markup, and AI study tools on one canvas
Your AI agent for the browser: chat, automate and create from one sidebar
| Dimension / Metric | | |
|---|---|---|
| Official Domain | goodnotes.com | sider.ai |
| Pricing Model | Freemium, Free Trial | Freemium |
| Monthly Visits | 3.23M (3,227,341) | 2.64M (2,644,740) |
| MoM Traffic Delta | +314.75K (+10.8%) | -314.2K (-10.6%) |
| Primary Market & Share | 🇺🇸 United States (33.8%) | 🇺🇸 United States (13.3%) |
| Direct Visits / mo | 1.64M | 1.7M |
| User Rating | 4.4 | 4.5 |
| Supported Platforms | Website | Browser Extension |
Handwritten notes, PDF markup, and AI study tools on one canvas
Low-latency ink with palm rejection, cross-out to erase, and handwriting-to-text conversion keeps writing close to pen on paper.
Import contracts, papers, or textbooks and mark them up by hand, with searchable annotations and clean exports.
Search across typed text, handwriting, and sketches, and turn notes into summaries, mind maps, or structured plans.
Work together in shared notebooks, documents, and whiteboards simultaneously, without version conflicts or file ping-pong.
Your AI agent for the browser: chat, automate and create from one sidebar
Ask questions and query any page with leading models such as GPT, Claude, Gemini, Grok, DeepSeek and GLM, and switch between them in one place.
Summarize long articles, explain hard concepts, and translate web pages, PDFs, images and videos without leaving the tab you are reading.
Sider Hand runs multi-step research, price comparison, form filling and inbox triage across real websites, using your existing logged-in sessions.
Generate images and video, build slides and documents, and work with ChatPDF, read-aloud, data analysis and an AI writer inside the same sidebar.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistAnthropic's frontier AI workspace powered by Claude 5.5 for agentic coding, analysis, and nuanced writing.
SpecialistCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
SpecialistCross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
One app to chat with GPT, Claude, Gemini and hundreds of other AI models
All-in-one AI assistant across web, browser, desktop and mobile
All-in-one AI assistant across web, browser, desktop and mobile
SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
SpecialistTurns course materials into interactive AI study tools, but focuses less on handwritten digital notebooks.
SpecialistTurns course materials into interactive AI study tools, but focuses less on handwritten digital notebooks.
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
One-click AI assistant for browsing, writing and research
One-click AI assistant for browsing, writing and research
SpecialistConverts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.
SpecialistConverts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.
Provides gorgeous structured block-based document editing, but is built for typed text rather than handwritten notes.
Provides gorgeous structured block-based document editing, but is built for typed text rather than handwritten notes.
One privacy-first AI client for GPT, Claude, Gemini and more
One privacy-first AI client for GPT, Claude, Gemini and more
