isiphoneduoready

4perf

Sid Singh

Photo & Video

Not confirmed

We don’t have proof either way yet.

4perf was last updated on Nov 5, 2026, after the iOS 27.1 SDK came out, so it could be ready. We’ll update this page as soon as there’s proof.

Version
1.2.1
Last App Store update
Nov 5, 2026
Checked daily
9 hours ago

4perf

Not confirmed yet. The dashed lines mark where the bars would sit for each state 4perf could still be in.

Have an iPhone Duo?

Open 4perf on the inner screen, take a screenshot, and tell us how it looks. Reports are checked automatically.

How does version 1.2.1 look?

Screenshot of the inner screen

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View on the App StoreHow we decide