# OpenCastor — Set up your robot in minutes

> Set up your robot in minutes (iPhone/iPad app by craig merry.)

- Source: https://appshunter.io/ios/app/opencastor/id6791719005 (this page in markdown: same URL + `.md`)
- Developer: [craig merry](https://appshunter.io/developer/1709539824)
- Category: Utilities, Developer Tools
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-08-14
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/opencastor/id6791719005/reviews.md

## What is OpenCastor?

OpenCastor is the free, on-device way to set up a home robot and see exactly what you told it to do.

Pair a robot on your own network, ask it for one capability, and approve the exact command before it runs. The robot answers with a signed receipt — and when it declines, the refusal is a signed receipt too, not an error. You can verify every receipt on your phone, offline, with no account and nothing sent to a cloud service.

SET UP IN MINUTES
- Install the runtime on the robot with one copyable command, then scan the pairing code.
- Or find the robot on your local network automatically, or type its address.
- A clear checklist walks the whole first-run, with a plain explanation before any permission prompt.

ASK, THEN SIGN THE EXACT COMMAND
- Pick a capability from the robot's own manifest.
- Before anything runs you see the exact tool name and arguments that will be sent — read it, then approve. The request is signed on your device with your key.
- The app decides nothing on its own. You approve; the robot's gateway responds.

RECEIPTS YOU CAN VERIFY
- Every command comes back as a signed receipt: allowed or refused.
- A refusal is itself a signed receipt from the robot's gateway that says which rule declined it — never a silent failure.
- Receipts are kept in a hash-chained journal on your phone. Tap Verify to check the signature on-device, with no network. A one-byte tamper toggle proves the check actually works.

LOCAL-FIRST, NOTHING COLLECTED
- Robot discovery and commanding are direct over your local network.
- No account, no analytics, no third-party SDKs, no tracking. Your receipts and journal stay on your device. See "Data Not Collected" in the App Privacy label.

AN OPEN ON-RAMP
- OpenCastor is built on open building blocks: a robot manifest, a signing gateway, a signed-envelope format, and an open robot registry.
- If you run an organization and already have an ingest key, you can push your own signed journal to a shared atlas in one step. That is entirely optional; the whole app works, and stays useful, with no subscription and no sign-up.

OpenCastor is a free portfolio project, built solo end to end. Give any robot a legible setup, and keep the receipt.


## Version history (last 1 release)

### 1.0 — 2026-08-14

No release notes.

## More apps by craig merry

- [Bicycle Radar](https://appshunter.io/ios/app/bicycle-radar/id6504119712)
- [TurtleFocus](https://appshunter.io/ios/app/turtlefocus/id6739596469)
- [Heat Compass](https://appshunter.io/ios/app/heat-compass/id6746873620)
- [HearAura](https://appshunter.io/ios/app/hearaura/id6787754529)
- [Exsiccatae](https://appshunter.io/ios/app/exsiccatae/id6790652558)
- [CivilDusk](https://appshunter.io/ios/app/civildusk/id6791332274)

All apps by craig merry: https://appshunter.io/developer/1709539824

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*