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An iPhone or iPad with iOS 15 or later, or an Android phone or tablet with Android 7.0 or later and Bluetooth Low Energy, and a Nano Cortex. No account and no internet connection are needed.

No. Song mode is StajNano’s own feature. The Nano Cortex does not know about songs and does not store them: your songs live in StajNano, on your phone or tablet, and Song mode works only while you use the Nano Cortex together with StajNano. When you load a song, StajNano puts its four presets on the footswitches and sets the tempo (you can switch the tempo off in Options → Song Tempo).

No, everything works from the screen. But an inexpensive Bluetooth MIDI foot controller, such as the M-VAVE Chocolate, lets your feet step through your songs, press the four slots, tap the tempo and switch the blocks. Two buttons are enough to start: program one to send Program Change 70 (previous) and one to send 75 (next). This “smart switch” steps through presets, banks or songs, whichever mode you are in, so the same setting works in every mode. See the MIDI reference.

This is the setup we recommend most for doing everything live with a single Nano Cortex. Program A, B, C and D to send Program Change 71, 72, 73 and 74 (the slots 1A, 1B, 2A and 2B), and a long press on A to send 70 (previous) and on D to send 75 (next). A to D then pick the four presets of the song, and a long press moves to the previous or next song. See the MIDI reference.

Yes. On the first screen ("Connect To Device") tap DEMO at the bottom right. The app opens on a simulated pedal and everything can be tried: switching effects, loading presets, the edit page, banks, songs, the tempo and the tuner. In Options the first row says "Demo mode", and EXIT DEMO goes back to the first screen. The demo needs no Bluetooth and sends nothing anywhere.

It does what you ask: switching blocks, turning knobs, loading presets. Bank and Song mode put presets on the footswitches, which rewrites the footswitch assignments on the pedal and drops edits you have not saved. Use SAVE to keep an edited preset. 1B and 2B need the pedal’s 4-preset mode.

Songs stay on your device, never on the pedal and never on a server. On the song list, EXPORT saves all of them in one .stajnano file where you choose, and IMPORT replaces the list with the songs of such a file, after asking you. That is also how you move your songs to another phone or tablet.

Songs above Max Song (Options) are saved but not shown. Raise Max Song to see them. A file made by a newer StajNano may hold more songs than your version keeps; StajNano tells you how many were left out.

Every page is drawn on one fixed 16:9 canvas and scaled to your screen, so it reads the same on every device and nothing breaks onto a second line when the system text size changes. The control page is made to be read at a glance on stage.

Close the app and open it again to start a fresh link. If it is still slow, switch the pedal off and on, and then Bluetooth in your phone or tablet. Try one step at a time.

No. StajNano is an independent, unofficial app. It is not made, endorsed or supported by Neural DSP, the maker of the Nano Cortex.