head to head/Developer Tools

Send21 vs ThinkerNotes

Neck and neck on boosts. Profiles, pricing and deals below.

Send21

Try a crypto pay link on testnet, no account

community boosts

⚡ 0

pricing

Freemium

what it is

Make a real test payment from your own wallet on Bitcoin, Solana, Ethereum, Base, Arbitrum and Polygon test networks. No account, no email.

ThinkerNotes

ThinkerNotes Docs

community boosts

⚡ 0

pricing

Freemium

what it is

Connect Claude or any MCP-compatible client to your notes, drafts, literature notes and media.