# PF One — 专业航空缩略词词典，支持搜索、分类与收藏 > Comprehensive aviation dictionary and pilot toolbox with offline access and practical tools. (iPhone/iPad app by Shenzhen Pailefei Consulting Services Co., Ltd..) - Source: https://appshunter.io/ios/app/pf-one/id6751495309 (this page in markdown: same URL + `.md`) - Developer: [Shenzhen Pailefei Consulting Services Co., Ltd.](https://appshunter.io/developer/1832721362) - Category: Utilities, Reference - Price: Free - Rating: 5.00/5 from 2 App Store ratings - Age rating: 17+ - Requires: iOS 13.0 · 28 MB - Languages: American English, Chinese (Simplified, China) - Released: 2025-09-09 - Data updated: 2026-08-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/pf-one/id6751495309/reviews.md ## What is PF One? Welcome to PF Tools, an aviation dictionary and pilot toolbox designed for aviation enthusiasts, student pilots, and aviation professionals. It brings together aviation terminology lookup, category-based browsing, and practical pilot tools in one app, helping you study, search, and prepare more efficiently. Key Features Extensive Aviation Database Access more than 20,000 aviation-related entries across areas such as Airbus, Boeing, NOTAM, METAR, and Airport, so you can quickly find the information you need. Chinese-English Paired Entries Browse aviation entries with Chinese and English terminology support, including Chinese titles, English full names, and explanatory notes to make technical terms and abbreviations easier to understand. Category Filters and Search Use category-based browsing and fast search to locate target entries more efficiently. Airport and Code Reference Entries Includes a large number of airport code and airport-related reference entries for everyday study and lookup. Pilot Toolbox Beyond the dictionary itself, the app also includes a Pilot Interview Checklist and a Flight Time Calculator for practical training and interview preparation scenarios. Offline Access The built-in local database allows you to browse entries even without an internet connection. Continuous Updates We continuously expand the database and improve content quality and usability. PF Tools is more than a dictionary. It is a practical companion for building aviation knowledge and improving preparation efficiency, whether you are studying for exams, organizing reference material, or preparing for interviews and real-world flying tasks. Pilot Flying focuses on pilot interview training and provides end-to-end support, from pilot license conversion to overseas pilot employment. WeChat: PilotFlyingMars Telegram: pilotflyingmars ## Key features - Extensive aviation database (20,000+ entries) - Chinese-English paired entries - Category filters and search - Airport and code reference - Pilot interview checklist - Flight time calculator - Offline access ## Frequently asked questions about PF One ### What is PF航空词典? PF航空词典 is a professional aviation abbreviation dictionary that supports search, categorization, and collection. It provides a comprehensive database of aviation terminology and practical tools for pilots and enthusiasts. ### How many aviation entries does PF航空词典 have? PF航空词典 boasts an extensive aviation database with over 20,000 aviation-related entries, covering areas like Airbus, Boeing, NOTAM, METAR, and Airport. ### Does PF航空词典 support both Chinese and English terms? Yes, PF航空词典 features Chinese-English paired entries, including Chinese titles, English full names, and explanatory notes to help users understand technical terms and abbreviations. ### Can I use PF航空词典 offline? Yes, PF航空词典 includes a built-in local database, allowing you to browse entries and access its features even without an internet connection. ### What practical tools are included in PF航空词典? Beyond the dictionary, PF航空词典 offers a Pilot Interview Checklist and a Flight Time Calculator, designed for practical training and interview preparation. ### How often is PF航空词典 updated? The developers continuously expand the database and improve content quality and usability, ensuring the information remains current and relevant. ### What is the age rating for PF航空词典? PF航空词典 has an age rating of 9+, making it suitable for a wide range of users interested in aviation. ### On which devices can I use PF航空词典? PF航空词典 is available on iPhone, iPad, and iPod, providing broad compatibility for Apple device users. ## Version history (last 5 releases) ### 2.3.0 — 2026-07-30 PF One combines an aviation abbreviation dictionary with practical flight tools. Search English aviation abbreviations and Chinese names, and browse commonly used aviation terms by category. Added five commonly used flight tools: 1. Cold Weather Correction 2. Continuous Descent Approach 3. Step Descent Approach 4. Ground Speed, Flight Path Angle, and Vertical Speed calculation 5. China Flight Level Allocation reference Also improved PF Tools input, keyboard visibility, and expandable-tool reading experience. ### 2.2.0 — 2026-07-09 Added 5 commonly used flight tools: 1. A unit converter for common flight units, including temperature, altitude, speed, distance, and pressure, plus flight path angle and climb/descent gradient conversion 2. Fuel calculation, including US gallon and imperial gallon support 3. Turn radius calculation, including turn time 4. Wind component calculation 5. Cloud top height calculation ### 2.1.1 — 2026-06-27 Bug fixes and performance improvements. ### 2.1.0 — 2026-06-24 Version 2.1 focuses on improving the study area, tool navigation, and the bilingual reading experience. This update includes: - A clearer PF Study structure and entry flow - A smoother expandable study experience for Pilot Competencies - More consistent naming and navigation across PF Tools - Expanded and refined reference content for Alphabet, METAR Reference, and METAR RWY States - Better Chinese/English display rules, with cleaner English-mode reading - Continued layout and usability polish for both iPhone and iPad Thank you to all pilots and testers who continue to share feedback with us. ### 2.0 — 2026-03-13 Introducing the all-new 2.0 — rebuilt from the ground up as your all-in-one pilot toolbox! Brand-New Design A completely redesigned interface — cleaner, more intuitive, and beautiful. Includes Light/Dark mode support and an optimized iPad experience. Pilot Toolbox (NEW) • Pilot Interview Checklist — Track your preparation progress with notes. Support file import/export to easily share with fellow pilots. • Flight Time Calculator — Professional numeric keypad for quick entry. Add positive or negative records, delete the latest one, and accumulate your flight hours with less friction. Expanded Dictionary • Thousands of new aviation terms added, with improved data quality for existing entries. • New category filter for quick navigation. More Improvements • Full Chinese/English bilingual support. • Redesigned "About Us" page with team info and social links. • iOS minimum lowered to 13.0, supporting more legacy devices. • Various stability and compatibility fixes. Thank you to our pilot community for your feedback and support! ## Apps similar to PF One | App | Rating | Price | Category | | --- | --- | --- | --- | | [民航监管](https://appshunter.io/ios/app/id6575368028) | 1.3 (3) | Free | Utilities | | [考拉飞行](https://appshunter.io/ios/app/id1509884507) | 5.0 (1) | Free | Utilities | | [Pilot Kit - Aviation Toolkit](https://appshunter.io/ios/app/pilot-kit-aviation-toolkit/id6749793975) | 5.0 (1) | Free | Utilities | | [Library of Aviation](https://appshunter.io/ios/app/library-of-aviation/id1574077748) | 4.8 (50) | Free | Utilities | | [云执照](https://appshunter.io/ios/app/id1127299042) | 1.4 (71) | Free | Utilities | | [Time-Calculator](https://appshunter.io/ios/app/time-calculator/id956859838) | 4.8 (358) | Free | Utilities | --- *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 2026-08-01.*