# REBT Pro — Cable Sizing & Diagrams > Cable Sizing & Diagrams (iPhone/iPad app by Manuel Mogrovejo.) - Source: https://appshunter.io/ios/app/rebt-pro/id6761301576 (this page in markdown: same URL + `.md`) - Developer: [Manuel Mogrovejo](https://appshunter.io/developer/1888765151) - Category: Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17.6 · 25 MB - Languages: American English, European Spanish - Released: 2026-04-04 - Data updated: 2026-08-11 - User reviews in markdown: https://appshunter.io/ios/app/rebt-pro/id6761301576/reviews.md ## What is REBT Pro? REBT Pro is a technical tool designed for professionals, installers, engineers, and students in the electrical field who need to perform calculations quickly and consult the Low Voltage Electrotechnical Regulation (REBT) at any time. The app combines calculation power and access to regulations in a clear, modern, and easy-to-use interface, optimized for both iPhone and iPad. MAIN FEATURES Technical calculators The app expands its calculation section with new tools designed to provide reliable and useful results for the daily work of electrical professionals. It now includes: -Electrical cable sizing -Voltage drop -Minimum conduit diameters -Electrical quantities -REBT earthing/grounding -Steinmetz capacitor -Circuit breaker calculation -Short-circuit current calculation Documentation and technical reference Directly access documentation and reference content to resolve doubts, verify technical criteria, and consult regulations at any time. In addition to REBT consultation, the app includes new resources such as: -Electrical formulas -IP/IK ratings -Electrical LOTO procedure with saveable checklist -Single-line electrical diagrams Professional and optimized interface A clean design focused on productivity, with simple navigation and adapted to all screen sizes. Smooth experience on iPhone and iPad Take advantage of the larger iPad format for comfortable consultation and the iPhone for quick use in the field. REBT PRO PREMIUM Unlock advanced features with a subscription: Full access to premium features Continuous improvements and new tools Unlimited experience Subscriptions are available on a monthly or annual basis. WHO IS THIS APP FOR? Electricians Installers Engineers Technicians Electrical students IMPORTANT NOTICE This application is a technical support tool. Results must be verified by a qualified professional and in accordance with the applicable regulations in each case. PRIVACY AND SECURITY REBT Pro does not collect unnecessary personal data. In-app purchases are securely managed through Apple. SUPPORT For any questions or suggestions: dev@mmlsoftware.es --- Terms of use: https://rebt.mmlsoftware.es/terminos-de-uso.html Privacy policy: https://rebt.mmlsoftware.es/politica-de-privacidad.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | REBT Pro Mensual | $3.99 | per month | | REBT Pro Anual | $34.99 | per year | ## Version history (last 5 releases) ### 3.5 — 2026-08-09 • New “Conventional” representation style, in addition to the “Boxed” mode, in the single-line diagram tool. It can be selected for both the canvas and PDF exports. • Revised vector symbols integrate components directly into the lines, creating diagrams that more closely resemble standard electrical representations. • New branching system for representing multiple outputs from a single component using continuous lines, avoiding breaks, isolated points and inconsistent junctions. • General stability and performance improvements, along with bug fixes. ### 3.4 — 2026-07-29 • New tool for creating professional single-line electrical diagrams. • Detailed configuration of components, connections, groups, and project information. • Export diagrams as DIN A4 or A3 PDFs in portrait or landscape orientation. • Preview PDFs before saving or sharing them. • Improved compatibility with Apple silicon Macs. • Stability and performance improvements, plus bug fixes. ### 3.3 — 2026-07-27 • New professional single-line electrical diagram tool. • Generate professional technical PDF documentation. • New Premium features for an enhanced experience. • Stability and performance improvements. ### 3.2 — 2026-05-14 We continue improving the app with the addition of the English language, offering a more accessible experience for international users and making it easier to use the application in different languages. ### 3.1 — 2026-05-09 Seguimos mejorando la app con ajustes en la calculadora de caída de tensión y con la incorporación del cálculo de caída de tensión de la línea propuesta según el REBT en la calculadora de secciones REBT. --- *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 2026-08-11.*