Duo Apps is an independent project operated by Mark Cuda. We research the iPhone Duo app ecosystem and offer app preparation services to developers and founders. We are not affiliated with or endorsed by Apple.
Evidence before recommendations
We link factual claims to primary sources where possible. Each app entry distinguishes an announcement from an editorial hypothesis. At launch, we have not performed independent iPhone Duo hardware tests.
We do not publish invented scores, download numbers, reviews, or compatibility certifications. Our evidence policy describes how stronger verification should work.
Commercial transparency
Our initial revenue offer is app readiness services. Current app links are ordinary source links; they do not generate affiliate commissions. If affiliate links or sponsorships are introduced, we will disclose them near the recommendation or placement. Payment will not change our evidence standard.
Corrections & submissions
Send sources, version details, or reproducible corrections to mc@markcuda.com. App submissions receive editorial consideration without an inclusion fee. Inclusion and response times are not guaranteed.
Research sources
The launch guides cite Apple’s September 9 announcement, technical specifications, and WWDC26 modernization guidance. Each watchlist record links to its own source.