SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
Chainrel records 0 monthly visits with 0% month-over-month growth and Freemium pricing. Goodnotes records 3,227,341 monthly visits with +10.8% growth and Freemium, Free Trial pricing.

Real-time blockchain event webhooks for your backend
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | chainrel.com | goodnotes.com |
| Pricing Model | Freemium | Freemium, Free Trial |
| Monthly Visits | 0 (0) | 3.23M (3,227,341) |
| MoM Traffic Delta |
| 0 (0%) |
| +314.75K (+10.8%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (33.8%) |
|---|
| Direct Visits / mo | 0 | 1.64M |
|---|
| User Rating | 4.1 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

Real-time blockchain event webhooks for your backend
Deliver smart contract events straight to your backend URL as JSON, so you avoid building and hosting your own indexer.
Listen to events on Ethereum, Polygon, Binance Smart Chain and Avalanche C-Chain, with mainnet and testnet endpoints.
Subscribe using a verified contract address or ABI file, or pick from built-in ERC-20, ERC-721 and ERC-1155 event templates.
Choose how many confirmations must pass before a notification is sent, protecting your workflow from blockchain reorganizations.

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.
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.
#2
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
#3SpecialistConverts 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.

Organizes notes into interconnected typed objects rather than traditional notebooks, but lacks handwritten ink support.
SpecialistUses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.

Offers spatial whiteboards for organizing complex research, but lacks Goodnotes' freehand handwriting stylus support.
Institution-grade crypto and equities intelligence, delivered through a chat-style AI analyst.

SpecialistAutomatically converts lectures and PDFs into structured study guides, but lacks freehand ink and drawing tools.

Blockchain AI suite for crypto research, smart contracts, and Web3 automation

Free / Open-sourceProvides privacy-focused local Markdown note-taking with backlinks, but lacks PDF markup and stylus handwriting capabilities.

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.
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
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.
Organizes notes into interconnected typed objects rather than traditional notebooks, but lacks handwritten ink support.
SpecialistUses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.
Offers spatial whiteboards for organizing complex research, but lacks Goodnotes' freehand handwriting stylus support.
SpecialistAutomatically converts lectures and PDFs into structured study guides, but lacks freehand ink and drawing tools.
Free / Open-sourceProvides privacy-focused local Markdown note-taking with backlinks, but lacks PDF markup and stylus handwriting capabilities.