isiphoneduoready

Fretalus: Fretboard Trainer

Individuation Labs LLC

Education

Ready

Fills the whole inner screen.

Built with the iOS 27.1 SDK or later.

Version
1.4.2
Last App Store update
Oct 24, 2026
Confirmed
Oct 30, 2026

Fretalus: Fretboard Trainer

Fretalus: Fretboard Trainer on the inner screen: fills the whole inner screen. It gets 2,853 × 2,007 pixels, drawn to the geometry measured in the simulator.

How we know

How we decide

  1. Developer says so

    The notes for version 1.4.2 say:

    …us now makes better use of wide screens. On an iPad in landscape or an unfolded iPhone Duo, the question sits beside its answers. Chords and Ear training also fit better…

  2. Verified by the community

    The iPhone Duo community lists it as ready.

Not what you see? Report “Ready” as incorrect

This page says version 1.4.2 fills the whole inner screen. If that’s not what Fretalus: Fretboard Trainer looks like on your iPhone Duo’s inner screen, tell us. It changes to “Not ready” once three people report it, at least one with a screenshot.

Screenshot of the inner screen

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Optional, but it’s the proof that lets reports change the answer. Your screenshot stays on your device: we only send a tiny grayscale copy to check it.

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