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No-IP vs Dynu: catalog facts
No-IP	Dynu
Freemium Free dynamic DNS hostnames; managed DNS, domains, SSL and Enhanced plans are paid.	Freemium Dynamic DNS is free; domains, email, SSL certificates and VPS hosting are paid.
Web	Web
Free hostnames on many shared domains Downloadable update client	Free dynamic DNS tier Documented IP update protocol and API
Useful extras are in paid plans The site pushes upgrades and promotions	Many services beyond basic DDNS are paid Requires creating an account
Downloadable app, Hosted service	Downloadable app, Hosted service
Closed source	Closed source
License not stated	License not stated
Account needed	Account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.