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FlashAnzan: Mental Math

Haruhiko Kishi

Education

Ready

Fills the whole inner screen.

Built with the iOS 27.1 SDK or later.

Version
1.3.8
Last App Store update
Oct 21, 2026
Confirmed
Oct 30, 2026

FlashAnzan: Mental Math

FlashAnzan: Mental Math 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 1.3.8 say:

    Works with iPhone Duo. Fold it in half: the answer on top, the number keys below.

  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 1.3.8 fills the whole inner screen. If that’s not what FlashAnzan: Mental Math 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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