# GEN-B > Portable broadcast signal generator and display analysis tool for professionals. (iPhone/iPad app by Precision Broadcast Engineering LLC.) - Source: https://appshunter.io/ios/app/gen-b/id6769944250 (this page in markdown: same URL + `.md`) - Developer: [Precision Broadcast Engineering LLC](https://appshunter.io/developer/1896702805) - Category: Utilities, Photo & Video - Price: Free (on sale, was $29.99) - Rating: 5.00/5 from 3 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.5 · 208 MB - Languages: American English - Released: 2026-06-25 - Data updated: 2026-08-31 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/gen-b/id6769944250/reviews.md ## What is GEN? GEN-B is a professional broadcast signal generator and display analysis tool designed for broadcast engineers, AV professionals, system integrators, technicians, and anyone who needs reliable video reference signals for testing, troubleshooting, and display evaluation. Built for portability and real-world workflows, GEN-B turns your device into a powerful signal generation and analysis platform capable of producing high-quality video references while providing practical display analysis tools. VIDEO REFERENCES GEN-B includes a comprehensive library of professional video reference signals designed to evaluate displays, video paths, routing systems, converters, switchers, processors, and monitoring equipment. Features include: • Professional test patterns • Video reference clips • Multiple video formats • Multiple frame rates • Geometry references • Grayscale references • Color references • Luma references • Gamma evaluation patterns • Resolution and focus references SIGNAL QUALITY GEN-B was developed with signal quality as a primary objective. The application provides high-quality video references suitable for professional evaluation workflows, including progressive and interlaced formats across multiple frame rates. Selected reference content supports advanced color reproduction, up to 12-bit video precision, and 4:4:4 chroma sampling, helping preserve fine image detail, color fidelity, and signal accuracy throughout the testing process. DISPLAY ANALYSIS GEN-B goes beyond traditional signal generation by incorporating display analysis capabilities. Using RasterScope Analysis and SWEEP technology, GEN-B can evaluate display behavior using generated reference signals and mathematical analysis techniques. Analysis functions help users better understand: • Active display area • Aspect ratio behavior • Image positioning • Display utilization • Side matte detection • Signal-to-display mapping SWEEP TECHNOLOGY At the core of GEN-B’s analysis system is a programmable RasterScope White Box Scanner. The scanner moves through the generated raster while mathematical analysis is used to interpret positional behavior and produce meaningful display evaluation information. Rather than relying only on assumptions, GEN-B generates a known reference signal and analyzes how that signal is represented on the connected display. This approach provides practical engineering insight using a portable mobile platform. TROUBLESHOOTING GEN-B was created to assist with real-world troubleshooting scenarios. Use GEN-B to: • Verify display operation • Evaluate video paths • Test display scaling behavior • Identify aspect ratio issues • Validate system performance • Troubleshoot signal routing problems • Confirm display response to known reference signals FLEXIBLE CONNECTIVITY GEN-B supports multiple external display workflows, allowing users to work in a variety of environments. Supported workflows include: • Direct external display output through compatible adapters and cables • USB-C display connections where supported • DisplayPort-compatible workflows • Wireless Output using Apple Screen Mirroring when available When using direct external display connections, additional analysis features such as RasterScope Analysis and SWEEP may be available depending on the connected hardware. RasterScope Analysis and SWEEP Analysis require direct output verification and are not available through Screen Mirroring, since mirroring may scale, composite, or reinterpret the image before it reaches the display. A TOOL DESIGNED BY ENGINEERS GEN-B was designed from an engineering perspective. The application combines signal generation, display analysis, mathematical modeling, and troubleshooting tools into a portable solution that remains simple to operate. Generate known reference signals. Analyze real-world display behavior. Transform observations into meaningful engineering information. GEN-B by Precision Broadcast Engineering. ## Key features - Professional test patterns - Video reference clips - Multiple video formats and frame rates - RasterScope Analysis - SWEEP technology - External display output ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/gen-b/id6769944250/reviews.md ### 5/5 — Professional and Practical Signal Generator *2026-08-30* GEN-B is a very useful tool for anyone who works with video systems, displays, signal paths, or AV/IT troubleshooting. The app is clean, precise, and easy to use, with professional test patterns that make display evaluation much more practical from an iPhone. I especially like that it supports real-world workflows through USB-C output, which makes it convenient for field checks and quick technical verification. Excellent app for engineers, technicians, and anyone who needs a reliable signal generator on the go. ### 5/5 — Professional App *2026-06-29* This is a professional grade app. Works and looks great. ## Frequently asked questions about GEN ### What is GEN-B used for? GEN-B is a professional broadcast signal generator and display analysis tool. It provides reliable video reference signals for testing, troubleshooting, and evaluating displays, video paths, and routing systems. ### What types of video references does GEN-B offer? GEN-B includes a comprehensive library of professional video reference signals such as test patterns, video reference clips, geometry references, grayscale references, color references, and luma references. ### Can GEN-B analyze display behavior? Yes, GEN-B goes beyond signal generation with display analysis capabilities. It uses RasterScope Analysis and SWEEP technology to evaluate display behavior, active display area, aspect ratio, and image positioning. ### What is the signal quality like in GEN-B? GEN-B is developed with signal quality as a primary objective, providing high-quality video references suitable for professional workflows. It supports progressive and interlaced formats, advanced color reproduction, up to 12-bit video precision, and 4:4:4 chroma sampling. ### Does GEN-B support external displays? Yes, GEN-B supports multiple external display workflows, allowing users to connect and work in various environments. It offers direct external display output through composite connections. ### How does GEN-B help with troubleshooting? GEN-B assists with real-world troubleshooting by helping users verify display operation, evaluate video paths, test display scaling, identify aspect ratio issues, validate system performance, and troubleshoot signal routing problems. ### What devices is GEN-B compatible with? GEN-B is currently supported on iPhones, offering a portable solution for broadcast engineers and AV professionals. ### How much does GEN-B cost? GEN-B is a paid application, priced at $29.99. It does not feature in-app purchases or advertisements. ## Version history (last 5 releases) ### 1.0.4 — 2026-08-28 GEN-B 1.0.4 introduces a new way to experience GEN-B. GEN-B is now available as a free download with a 7-day professional evaluation period. During the evaluation, you have full access to all GEN-B features and functionality with no feature limitations. After the evaluation period, you can continue using GEN-B with a one-time Lifetime Unlock purchase. No subscription and no recurring charges. This update also improves signal accuracy, reorganizes the SDR/HDR pattern library, and refines instrument analysis behavior and overall application stability. Existing customers who purchased GEN-B before this change retain their access. ### 1.0.3 — 2026-07-05 This update improves GEN-B with enhanced signal accuracy, better organization of SDR and HDR reference patterns, refined instrument performance, and overall stability improvements. ### 1.0.2 — 2026-07-02 • Added the new Tone Settings panel with selectable reference frequencies. • Added Sine Wave, Square Wave, White Noise, and Pink Noise audio reference signals. • Improved audio signal stability and overall Tone Generator performance. • Refined the user interface for a faster and more intuitive workflow. ### 1.0.1 — 2026-06-29 Improved Tone Generator audio smoothing and wireless mirroring stability. ### 1.0 — 2026-06-26 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 2026-08-31.*