# I/O Box IDs

> I/O Box IDs (iPhone/iPad app by Calrec Audio Ltd..)

- Source: https://appshunter.io/ios/app/io-box-ids/id893153013 (this page in markdown: same URL + `.md`)
- Developer: [Calrec Audio Ltd.](https://appshunter.io/developer/893153016)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 9.0 · 11 MB
- Languages: American English
- Released: 2014-07-06
- Data updated: 2026-08-15
- User reviews in markdown: https://appshunter.io/ios/app/io-box-ids/id893153013/reviews.md

## What is I/O Box IDs?

Calrec Hydra2 I/O boxes are simple to set up and use. The only configuration requirement is that each I/O box must have a unique ID on the Hydra2 network to which it is connected. This ID is an integer in the range of 1-255, and is set in binary using DIP switches on each box. 

This App makes it simple to convert from a decimal ID to a binary representation, telling you specifically which switches to turn on. 

Alternatively, you may want to go from binary, back to a decimal ID if you have a box already configured with an ID. With this App, you can easily find the decimal ID before you connect it to a network.


## Version history (last 2 releases)

### 1.1 — 2017-01-21

This app has been updated by Apple to display the Apple Watch app icon.

The app has been completely rewritten in Swift for iOS 9+. It now also uses Auto-Layout to properly adapt to all iPhone screen sizes.

### 1.0 — 2014-07-02

No release notes.

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## More apps by Calrec Audio Ltd.

- [Ice Hockey Assist](https://appshunter.io/ios/app/ice-hockey-assist/id923324303)
- [Fader Assist](https://appshunter.io/ios/app/fader-assist/id923338210)

All apps by Calrec Audio Ltd.: https://appshunter.io/developer/893153016

## Related topics

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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 2026-08-15.*