Dynamic DNS for home servers, labs, and little duckies
Keep your server afloat, even when your IP changes
Bathwater gives your home server, VPN, NAS, camera, or game server a stable hostname. When your internet provider changes your IP address, Bathwater keeps your DNS records synced automatically in the background.
Bathwater Dashboard
Your hostnames are floating smoothly
Hostname
bathtub-lab.bathwater.app
Last IP Sync
Updated 2 minutes ago
Protection
SSL-ready DNS records
Home network reachable
Point a stable Bathwater hostname to your changing home IP address.
Automatic updates
Your update client keeps DNS synced while your ducks float peacefully.
Bathwater Features
Everything your home lab needs to stay afloat
Bathwater gives self-hosters, gamers, camera owners, and small teams reliable DDNS without monthly confirmation emails, tiny free limits, or basic convenience features locked behind paywalls.
Multiple Free Hostnames
Create several Bathwater hostnames for your NAS, VPN, cameras, game servers, and home lab projects.
No Monthly Confirmation
Active hostnames stay active. No monthly “click here or lose your hostname” emails.
Automatic IP Updates
When your internet provider changes your IP, Bathwater updates your DNS records automatically.
Router-Friendly Updates
Use Bathwater from routers, firewalls, NAS devices, update clients, scripts, or standard DDNS URLs.
Secure DDNS Keys
Generate separate update keys for each hostname instead of exposing your main account password.
Cheap Custom Domains
Bring your own domain and create branded hostnames without expensive or confusing upgrades.
Update Client
Install once. Keep your hostname floating forever.
The Bathwater update client checks your public IP address and updates your DDNS hostname automatically when your internet provider changes it.
Works with home servers, VPNs, cameras, NAS devices, and game servers.
Use separate update keys instead of your main account password.
Router-friendly update URLs for devices that already support DDNS.
Windows
Simple background updater for home PCs, mini PCs, and Windows servers.
macOS
Lightweight menu bar updater for Macs used as home servers or media machines.
Linux
Install with one command on Ubuntu, Debian, Fedora, Raspberry Pi, or your VPS.
Docker
Run Bathwater as a tiny container beside your self-hosted apps.
Simple Pricing
Free DDNS should be useful, not annoying
Bathwater is designed around a generous free tier first. Paid plans should add convenience and scale, not punish basic home-lab users.
Free Duck
For self-hosters who need useful DDNS without annoying monthly confirmations.
Multiple free Bathwater hostnames
Automatic IP updates
Router-friendly update URLs
Separate update keys
No monthly confirmation emails
Warm Bath
For people who want custom domains, more hostnames, and priority features.
Everything in Free Duck
Bring your own domain
More hostnames
Advanced DNS records
Priority update checks
Duck Fleet
For small teams, labs, and people managing many devices or client setups.
Everything in Warm Bath
Team-friendly hostname management
Many devices and endpoints
Activity logs
Priority support
No hostile free tier.
No monthly confirmation trap. No tiny one-hostname limit. No forcing basic DDNS users into expensive plans just to keep their home server reachable.