head to head/Developer Tools

PartnerUp vs Send21

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

PartnerUp

Find a co-founder worth building with

community boosts

⚡ 0

pricing

Freemium

what it is

PartnerUp is the app for finding a co-founder or collaborator. Browse everyone, plus one curated pick a day. Chat opens after a mutual yes. Free to start.

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.