Last updated: 1 September 2026 — MIDI over Wi-Fi was added in 1.0.3, and the section on it below is new.
Midiboard collects nothing. There is no account, no sign-in, no analytics, no crash reporting and no advertising. Nothing about you is gathered, and nothing is ever sent to us or to anyone else. From version 1.0.3 the app can carry MIDI over your local network if you switch that on — see MIDI over Wi-Fi below, which is the only network the app ever touches.
Your layouts — the screens you build, the widgets on them and their settings — are saved as an ordinary file inside the app's own folder on your iPhone. They are included in your device backup if you have one, and they are deleted with the app. Nothing about them is sent anywhere.
Midiboard uses Bluetooth to appear as a MIDI device to whatever you connect it to. That connection carries MIDI messages — the notes and controller values produced by touching the screen — and nothing else. It reaches only the device you paired with. Midiboard does not scan for, identify or record other Bluetooth devices around you.
The name you set is broadcast, because that is how the other machine finds it in a list. Pick something you are comfortable being visible to Bluetooth devices nearby.
From 1.0.3 Midiboard can reach a computer over your local network instead of over Bluetooth, using the standard RTP-MIDI session protocol that macOS has built in. It is off unless you turn it on, in Settings → Connection.
When it is on, the phone offers a session on the network it is already joined to and waits; a computer on that same network joins it. What travels is the same thing Bluetooth carries — MIDI messages, and nothing else — and it goes only to the machine that connected. Nothing leaves your network, nothing reaches the internet, and nothing reaches us. The phone is discoverable under the device name iOS already publishes (Settings → General → About → Name) for as long as the session is switched on.
If a future version ever needs to send anything beyond your own network — syncing layouts between devices would be the obvious candidate — it will be something you switch on, it will be described here first, and this page will say when it changed. That is what happened with Wi-Fi above.
Questions about privacy, or anything else: safabulatdev@icloud.com.