Is it Duo-ready?

SmallFish Chess for Stockfish

Ted Wong

View on App Store ↗Games

Does SmallFish Chess for Stockfish work on iPhone Duo?

Not known yet. SmallFish Chess for Stockfish was updated on November 10, 2026, after Apple began accepting iPhone Duo builds, but the release notes don't mention iPhone Duo. No owner has reported how it runs yet. If you have one, you can add the first report.

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By position

Outer screenNo data
Inner screenNo data
Half-folded (tabletop)No data
Keeps your place when foldingNo data

From recent reports. “Didn't try” answers aren't counted.

App Store updates

All apps
Version 19.6.9

Released after Duo submissions opened

Version 19.6.8

Released after Duo submissions opened

Version 19.6.7

Released after Duo submissions opened

Version 19.6.6

Released after Duo submissions opened

Version 19.6.5

Released after Duo submissions opened

Checked every few hours. Only builds made with the iOS 27.1 SDK, accepted since October 5, 2026, can use the whole inner display. Owner reports confirm whether an update did.

Report how it runs

How does SmallFish Chess for Stockfish run on your Duo?

Screenshots

Optional, up to 4. Unfolded is most useful. We check each one before it's shown, and remove location and other hidden details.

Positions you tried

Outer screen
Inner screen
Half-folded (tabletop)
Keeps your place when folding

Optional. It helps people who use the phone a certain way.

Details

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Reports (0)

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iPhone Duo status of SmallFish Chess for Stockfish
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