Find what needs attention before your app reaches iPhone Duo.
Review your critical journeys, examine layout signals and agree what to test next. FoldReady combines a free source scanner with a human review of your app and its test coverage.
What is available today
Source analysis, a review of up to three agreed critical journeys, and a prioritized test and remediation plan. Existing apps can run on Duo without recompilation.
Duo simulator testing requires an available target and a buildable app. Any later simulator pass is scoped separately. Physical-device testing is not included.
Apple tools and availabilityHow the review works
A report your team can act on.
For teams maintaining older UIKit apps or custom interfaces with critical flows to protect.
1. Agree the scope
One app, one source revision and up to three critical journeys. Confirm access, build requirements and available test environments before work starts.
2. Separate evidence from assumptions
Source signals are candidates for review. Reproduced defects include the environment, steps and evidence. Optional improvements, such as a sidebar, are listed separately.
3. Decide the next change
Get a prioritized plan and a work order your team or coding agent can use. Corrections are quoted after review, with acceptance criteria for each agreed journey.
Pricing
Start with a scoped review.
The paid service covers analysis and human judgement. The scanner remains free and local.
Source scanner
Free
Repeatable source signals for your team and CI.
- Layout and navigation checks with Apple sources
- Versioned score and unvalidated effort estimate
- Local reports and regression policies
- Work orders for reviewed changes
- uses: guillaume-flambard/foldready@v0Readiness review
$349 / app
One source revision and up to three agreed critical journeys.
- Source findings reviewed for relevance
- SDK and build assumptions documented
- Available screenshots reviewed in context
- Prioritized fixes and Duo test checklist
- One follow-up review of the same scope within 30 days
Corrections and validation
Scoped quote
Implementation and testing against agreed acceptance criteria.
- Fixes selected from the review
- Build and test environment agreed in advance
- Before/after evidence for tested journeys
- Untested configurations explicitly listed
Before you start
What the results mean.
Does every app need a port?
No. Apple says existing apps run without recompilation, and standard navigation adapts automatically. The review focuses on your custom layouts and critical journeys. A sidebar is an optional design choice.
Does a high score prove compatibility?
No. Source analysis cannot prove rendering, state preservation or a successful launch. Screenshot margins can come from compatibility presentation or intentional spacing. Runtime evidence needs a named build, environment and tested journey.
Why use this alongside Apple tooling?
Apple announced the App Resizability skill for Xcode 27.1. FoldReady proposes a review order; a human validates priorities and records what was checked; your team can use Apple tooling to implement changes.
When can Duo testing happen?
Confirm tool availability and build access when agreeing a simulator pass. Every delivery names the environments actually tested.
Sources, checked 11 September 2026: Apple announcement · Prepare your app for iPhone Duo · Adaptive layouts.
Source audits of twenty open-source apps. Scores are labelled by contract; they are source signals, not Duo runtime verdicts.