iPhone Duo Apps

Original digital resource / Version 1

Get your app ready
for iPhone Duo.

A practical workbook, test checklist and planning templates for your next app.

App Readiness Fieldbook, a practical workbook for app teams by Mark Cuda. Version1,2026.

$29 USD / one-time

What you receive

  • A 2,745-word workbook with a worked fictional example
  • 24 proposed testing scenarios with expected behavior
  • A blank CSV test matrix with 25 fields and 20 empty rows
  • Issue template, scoping worksheet and matrix instructions
  • Printable HTML and editable Markdown editions
  • Internal use by you, your employees and project contractors
Get the Fieldbook for $29

Pay securely through Stripe. After payment is confirmed, download your ZIP on the confirmation page. No subscription.

Purchase terms and license · Try the free checklist

Useful before device testing is available

Choose a task, state the expected result, and inspect how work survives changes in available space. Record the app, build, runtime and test environment. The workbook helps you separate a documentation claim from an observed result.

The scenario library contains proposed procedures. The blank matrix contains no test results. The worked example is fictional and labeled. This purchase does not include an Apple SDK, compiled app, course, certification, or claim that your app works on iPhone Duo hardware.

Continue only as far as your project needs

Use the free checklist for a first pass, the Fieldbook for a structured review, or a $1,500 audit for help applying the method. If the findings call for implementation, we can scope a prototype from $5,000. No subscription or consulting work is added automatically.

If you buy the Fieldbook and book an audit within 30 days, we will credit its $29 price against the audit. Mention your purchase email when requesting the scope. One credit per audit.