CWI Prep 3.1 improves studying across supported iPhones, including both iPhone Duo displays.

• Improved portrait and landscape layouts and text wrapping.
• Clearer onboarding and study-scope descriptions.
• More readable progress summaries at larger text sizes.
• Corrected the worked heat-input explanation in CWI Math.
• Updated privacy information.

Educational study tools are supplemental; use the official exam documents and required code edition.

The latest major update introduced randomized question order, Spanish-ready labels, and polished monetization indicators. The post-update period contains zero reviews, resulting in a neutral impact assessment. There is insufficient data to determine if these changes influenced user sentiment or app performance.

Improved CWI practice sessions with fresh randomized question order, Spanish-ready study labels, Pro/unlimited status polish, and Play quality compatibility updates. Includes welding tools, flashcards, explanations, and progress improvements.