# Rad Index > Rad Index (iPhone/iPad app by Simone Zen.) - Source: https://appshunter.io/ios/app/rad-index/id6770671896 (this page in markdown: same URL + `.md`) - Developer: [Simone Zen](https://appshunter.io/developer/1896760438) - Category: Education - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.0 · 43 MB - Languages: American English - Released: 2026-06-30 - Data updated: 2026-07-27 - User reviews in markdown: https://appshunter.io/ios/app/rad-index/id6770671896/reviews.md ## What is Rad Index? Radiographic positioning reference app for Radiographers, Radiologic Technologists and Radiography students. 147 clinical projection cards with separate DR and CR technical parameters, calculators, spaced repetition flashcards and ALARA checklist — all offline. Built by a practicing Radiographer (TSRM). Clinical content peer-reviewed twice. Available in Italian, English and Spanish. —————————————————————————————— RADIOGRAPHIC PROJECTIONS —————————————————————————————— 147 cards across 8 anatomical regions: • Chest — PA, lateral, obliques, trauma variants (cross-table, supine) • Skull — PA, lateral, Waters, Caldwell, Towne, skull base, mastoids, orbits, sinuses • Spine — cervical, thoracic, lumbar, sacrum, coccyx; trauma and stretcher variants • Upper limb — fingers, hand, wrist, forearm, elbow, humerus, shoulder, clavicle, sternum, scapula • Lower limb — toes, foot, calcaneus, ankle, tibia/fibula, knee, femur, hip, pelvis, patella • Abdomen — supine, erect, decubitus • Pelvis — AP, oblique projections • Long bone stitching — full spine, full limb Each card: patient positioning, centering point, separate DR and CR parameters, image quality criteria, common errors, practical clinical notes. Collapsible DR/CR/PSP guide with Deviation Index (DI) formula and grid frequency table. —————————————————————————————— STUDY & REVIEW —————————————————————————————— • Flashcards with spaced repetition • 3 cards per projection: centering, DR parameters, patient position • Automatic daily sessions based on performance • Ideal for registry exams and clinical placement —————————————————————————————— STUDY TOOLS —————————————————————————————— • Interactive ALARA checklist (ICRP 147/2021) • Personal notes for each projection with auto-save • PDF export and share with zone-coloured header • Radiological glossary (All / Technical / Anatomy tabs) —————————————————————————————— DESIGN & USABILITY —————————————————————————————— • Full dark mode with dedicated zone colours • Adjustable text size: S / M / L / XL • Works completely offline • Available in Italian, English and Spanish • Quick search with filters (zone, level, notes) and history • Favourites and recents on home screen 14-day free trial — no card required. Then a one-time purchase of €9.99. No subscription, ever. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Rad Index Premium | $8.99 | one-time | ## Version history (last 3 releases) ### 1.0.2 — 2026-07-24 Stability improvements and minor refinements to the experience. ### 1.0.1 — 2026-07-11 What's new in this version: • Improved search: find projections, criteria and notes more easily • Smoother navigation between projections in the same region • More comfortable glossary on small screens • Notifications for future app updates • Stability and performance improvements ### 1.0 — 2026-07-01 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-27.*