737 Systems Study — Support

For help with the iOS app, email dttquestionreport@gmail.com. Include your device model, iOS and app versions, the screen or topic involved, and what happened. For a question correction, identify the topic and variant and cite the current approved source you used. Please do not send passwords, card details, or copies of restricted manuals.

Studying

The app contains 746 single-answer questions across 21 systems and variant topics, including NG and MAX differences. Practice is untimed and the question bank is available offline. The free preview includes five questions per topic; full-bank sessions contain up to 30 questions after a lifetime unlock. You can revisit saved and missed questions and see recent session scores on this device.

This is an independent study aid, not an aircraft manual or operational reference. Configurations and operator procedures differ. Check current approved manuals and instructor guidance before training or operation. The app is not affiliated with or approved by Boeing, the FAA, EASA, or an aircraft operator.

Lifetime access and restore

Open Settings → Restore purchase using the Apple Account that made the one-time purchase. If the paywall says “Purchase unavailable,” use “Try again” when App Store services are available. If access still does not return, email support with the app name, approximate purchase date, and the message shown in the app. Apple handles billing; do not send payment-card details.

Privacy

Read the 737 Systems Study privacy policy. Practice progress is stored on the device; a configured release also sends limited usage and purchase-flow events to Firebase Analytics.