# Chorus RF Laptimer — VTX Lap Timer > Open-source DIY drone racing lap timing solution. (iPhone/iPad app by Hypercube DOO.) - Source: https://appshunter.io/ios/app/chorus-rf-laptimer/id1296647206 (this page in markdown: same URL + `.md`) - Developer: [Hypercube DOO](https://appshunter.io/developer/825819632) - Category: Entertainment, Sports - Price: Free - Rating: 5.00/5 from 1 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 23 MB - Languages: American English - Released: 2017-10-31 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/chorus-rf-laptimer/id1296647206/reviews.md ## What is Chorus RF Laptimer? The app is an essential part of the DIY "Chorus RF Laptimer" project, which is the open-source time tracking solution for small drone racing events. Full project description including hardware description and the source code is available at GitHub: https://github.com/voroshkov/Chorus-RF-Laptimer ## Key features - DIY drone racing time tracking - Open-source project - Lap timing solution - Hardware and software integration - GitHub source code available ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/chorus-rf-laptimer/id1296647206/reviews.md ### 3/5 — For every pilots - own hardware-devices *2020-11-16* This software makes everything ok. But it is only for 1 Pilot. If you want more Pilots the pilots must have own device-hardware (software will for one device = 1 pilot, two devices = only 2 Pilots....) This rstriction is stupid because the Arduino device-Hardware can send informations from more copters. The app get 5 stars when the software can show with one hardware-device - more then 1 pilots. ### 5/5 — Aggiornamento Api 6 *2019-09-30* Dopo un primo impatto negativo per incompatibilità di versioni, Aggiornando l’APP con il Firmware API 6 Tutto funziona perfettamente bene... Anche se Attendo cone sicuramente molti altri la versione con lingua italiana 5 Stelle meritate ! 🌟🌟🌟🌟🌟 ### 5/5 — Race timer *2019-07-21* Works great, we use all time for practice 🤙🏻 ### 5/5 — Perfect ! *2018-06-23* Works great with diy ChorusRF lap timer. ### 5/5 — Funciona *2018-06-10* Hace su función bien, hasta que empiezan a dar guerra los arduino. ## Frequently asked questions about Chorus RF Laptimer ### What is Chorus RF Laptimer? Chorus RF Laptimer is an open-source time tracking solution designed for small drone racing events. It's part of a DIY project that includes both hardware and software components for accurate lap timing. ### Is Chorus RF Laptimer free to use? Yes, Chorus RF Laptimer is available for free. The project also provides its source code on GitHub, allowing for customization and community contributions. ### What devices does Chorus RF Laptimer support? Chorus RF Laptimer is supported on iPhone, iPad, and iPod devices. It is designed to be compatible with Apple's mobile operating systems. ### How often is Chorus RF Laptimer updated? The latest version of Chorus RF Laptimer is 1.3.0, which was last updated on September 20, 2019. While not frequently updated recently, it offers a stable solution for its intended purpose. ### What is the age rating for Chorus RF Laptimer? Chorus RF Laptimer has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals. ### Where can I find the source code for Chorus RF Laptimer? The full project description, including hardware details and the source code for Chorus RF Laptimer, is available on GitHub. You can access it at https://github.com/voroshkov/Chorus-RF-Laptimer. ### Does Chorus RF Laptimer have ads? No, Chorus RF Laptimer does not contain advertisements. As a free and open-source project, it focuses on providing its core functionality without interruptions. ## Version history (last 5 releases) ### 1.3.0 — 2019-09-20 Support for API V6 ### 1.2.0 — 2019-04-25 API version 5 Bug fixes Added ability to cancel text to speak Added color picker for pilots ### 1.1.0 — 2018-10-02 performance and stability update added feature to stop device for sleeping ### 1.0.10 — 2018-07-19 Time zone bug fix ### 1.0.9 — 2018-06-23 Frequency scanner ## Apps similar to Chorus RF Laptimer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Mini4WD-LapTimer](https://appshunter.io/ios/app/mini4wd-laptimer/id1606492403) | 4.0 (1) | Free | Entertainment | | [Play:Date Kids Social Network](https://appshunter.io/ios/app/playdate-kids-social-network/id1189879174) | 2.2 (18) | Free | Entertainment | | [SpeachyAI](https://appshunter.io/ios/app/speachyai/id6742565399) | — | Free | Entertainment | | [Crackle Cube](https://appshunter.io/ios/app/crackle-cube/id1570281952) | 5.0 (9) | Free | Entertainment | | [Sprewell Podcast](https://appshunter.io/ios/app/sprewell-podcast/id1497544057) | 4.4 (20) | Free | Entertainment | | [CCBaltics](https://appshunter.io/ios/app/ccbaltics/id1435361115) | — | Free | Entertainment | ## Related topics [rf zhou](https://appshunter.io/ios/topics/rf-zhou) --- *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 2026-06-01.*