Control your Klipper printer and slice straight from your phone — from anywhere, with no VPN, no port-forwarding, and nothing to configure. Just sign in.
Works with any Klipper / Moonraker printer · Remote control is free forever
Live demo
A working demo of the real app — switch tabs, jog the printer, slice a model, watch the temps move. This is exactly what you'll use, just without a printer plugged in.
👆 The real app, running on a demo printer — tap around.
What you get
A polished app for your printer that lives on your phone, your tablet, and any browser.
Live temps, start/pause/cancel, motion, fans, macros, live webcam and emergency stop — over the internet, no tunnel or VPN to set up.
Upload or find a model, pick material and quality, and we slice it on our servers with your printer's real profile — then send it straight to the machine. No PC, no USB stick.
Turn a text prompt or a photo into a printable 3D model, or describe a part and let CAD design it — then slice and print, all from your phone. Runs on a monthly AI-credit pool.
Voron, QIDI, Sovol, Creality K-series, Elegoo, RatRig and 100+ more. Pick your model at setup and slicing uses the right bed size and profile.
Live webcam, automatic timelapses (no plugin), print history, and AI failure detection that pauses the moment something goes wrong.
Built-in filament tracking that records usage for every print automatically, plus schedule a print to auto-start the moment the printer's free. Multi-printer and sharing built in.
…and everything a Klipper power-user expects
Setup
No IP addresses to find, no ports to forward, no credentials on your printer.
Free, with email, Google, or GitHub — and you're on Pro free for 30 days.
The app hands you a ready-to-paste command for the Pi that runs Klipper — curl -sSL https://app.hotend.app/install | bash — with your account link already built in.
The printer links to your account automatically — no code to copy, nothing to type back. Control and slice it from anywhere.
Built on trust
The only thing that runs on your hardware is a tiny agent that dials out — so there's no port to forward and nothing on your network is reachable from the internet. And it's open source: read every line before you install it.
View the agent on GitHub →Your models are yours, full stop. Uploads travel over TLS, get sliced, and the g-code goes to your printer. The model file lands in your account's library so you can re-slice and reprint without uploading again — delete it there and it's gone from our servers. Slicer scratch files are cleaned up automatically within 14 days. Every model and g-code request is checked against the signed-in account that owns it.
Nobody reads your models, nothing is used for training, and nothing is shared or sold. If you use the AI features, only what's needed for that job is sent — a snapshot of the model for slice suggestions, webcam frames for failure detection — and that's it.
FAQ
No. A small agent on your printer dials out to Hotend, so nothing is exposed to the internet and there's no port to forward.
Any printer running Klipper and Moonraker — Voron, QIDI, Sovol, Creality K-series, Elegoo, RatRig, Anycubic Kobra, FLSun and 100+ more.
While Hotend is in beta, everything is free — unlimited cloud slicing, AI generation, failure detection and all your printers, no card required. Remote control will stay free forever; slicing and AI will become paid plans after beta, and we'll give plenty of notice before that happens.
They're sliced, sent to your printer, and kept in your account library so you can reprint without re-uploading — delete them there and they're gone from our servers. Slicer scratch files auto-clean within 14 days, every file access is owner-checked, and nothing is read, trained on, shared or sold. More detail here.
Our Business plan adds unlimited printers, fleet view, team access and priority support. Get in touch and we'll set you up.
Yes. Upload or find a model and Hotend slices it in the cloud with your printer's real profile, then sends the g-code straight to the machine — no PC needed.
Yes. The agent that runs on your printer is open source on GitHub — read every line before you install it.
They focus on remote access and AI failure detection. Hotend's distinctive feature is slicing and starting a print from your phone, on top of full remote control.