# Jetting Vortex ROK GP Kart — get best carburetor config > Kart engine carburetor and spark plug optimization based on environmental data. (iPhone/iPad app by Ballistic Solutions LLC.) - Source: https://appshunter.io/ios/app/jetting-vortex-rok-gp-kart/id1540482954 (this page in markdown: same URL + `.md`) - Developer: [Ballistic Solutions LLC](https://appshunter.io/developer/1611909747) - Category: Sports, Utilities - Price: $7.99 - Rating: 4.30/5 from 3 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 43 MB - Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 22 more - Released: 2020-11-29 - Data updated: 2026-09-08 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/jetting-vortex-rok-gp-kart/id1540482954/reviews.md ## What is Jetting Vortex ROK GP Kart? This app provides, using temperature, altitude, humidity, atmospheric pressure and your engine configuration, a recommendation about optimal carburetor configuration (jetting) and spark plug to use for karting Vortex ROK engines (ROK MINI, ROK GP JUNIOR, ROK GP SENIOR), which use a Dellorto VHSH 30 and PHBG 18 carburetor. This app can obtain automatically the position and altitude to get the temperature, pressure and humidity from the nearest weather station through the internet. Internal barometer is used on supported devices for better precision. Application can run without GPS, WiFi and internet, in this case the user has to enter weather data manually. • Two different tuning modes: "By regulations" and "Freestyle"! • In first mode, the following values are given: main jet, spark plug, spark plug gap, needle type and position (including intermediate positions with washer), air screw position, optimal water temperature, gear oil recommendation • In second mode (Freestyle), the following values are given: main jet, spark plug, emulsion tube, needle, needle type and position (including intermediate positions with washer), throttle valve size, idle jet (outer pilot jet), idle emulsifier (inner pilot jet), air screw position • Fine tuning for all these values • History of all your carburetor configs • Graphic display of fuel mix quality (Air/Flow Ratio or Lambda) • Selectable fuel type (gasoline with or without ethanol, Racing fuels available, for example: VP C12, VP 110, VP MRX02, Sunoco) • Adjustable fuel/oil ratio • Adjustable floats height • Mix wizard to get the perfect mix ratio (fuel calculator) • Carburetor ice warning • Possibility of use automatic weather data or a portable weather station • If you don't want to share your location, you can manually select any place in the world, the carburetor setups will be adapted for this place • let you use different measure units: ºC y ºF for temperatures, meter and feet for altitude, liters, ml, gallons, oz for fuel, and mb, hPa, mmHg, inHg for pressures The application contains four tabs, which are described next: • Results: In this tab two carburetor configs are shown ('By regulation' and 'Freestyle'). These data are calculated depending on the weather conditions and the engine and track configuration given in the next tabs. Also this tab lets do a fine tuning adjustment for all values for each carburetor setup to adapt to the concrete engine. Also the air density, density altitude, relative air density, SAE - dyno correction factor, station pressure, SAE- relative horsepower, volumetric content of oxygen, oxygen pressure are shown too. You can also see in a graphic form the calculated ratio of air and fuel (lambda). • History: This tab contains the history of all carburetor configs. This tab also contains your favorite carburetor configs. • Engine: You can configure in this screen the information about the engine, that is, engine model, spark plug manufacturer, float type and height, fuel type, oil mix ratio and type of the track • Weather: In this tab, you can set the values for current temperature, pressure, altitude and humidity. Also this tab allows to use the GPS to get the current position and altitude, and connect to an external service (you can choose one weather data source from several possible) to get the weather conditions of the nearest weather station (temperature, pressure and humidity). In addition, this application can work with a pressure sensor built into the iPhone. You can see if it is available on your device and turn it on or off. Also, on this tab, you can enable alerts about possible carburetor icing. If you have any doubt about using this App, please, contact us. We answer every question, and we take care of all comments from our users to try to improve our software ## Key features - Optimal carburetor configuration recommendations - Spark plug selection and gap settings - Two tuning modes: 'By regulations' and 'Freestyle' - Automatic or manual weather data input - History of carburetor configurations - Graphic display of fuel mix quality - Selectable fuel types and adjustable fuel/oil ratio ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/jetting-vortex-rok-gp-kart/id1540482954/reviews.md ### 5/5 — Great App! *2024-07-25* This app is great for tuning. I dial in at almost every race. Helped me learn how to find a good baseline. ### 5/5 — Good app *2021-10-23* Works very well for us (Junior class). Save a lot of time for mechanic. ### 5/5 — Good app *2021-10-21* Very helpful app. I works as mechanic in karting team and use it every week. ## Frequently asked questions about Jetting Vortex ROK GP Kart ### What Vortex ROK engines does Jetting Vortex ROK GP Kart support? Jetting Vortex ROK GP Kart supports ROK MINI, ROK GP JUNIOR, and ROK GP SENIOR engines that utilize Dellorto VHSH 30 and PHBG 18 carburetors. ### How does Jetting Vortex ROK GP Kart get weather data? The app can automatically obtain the position and altitude to get weather data from the nearest weather station via the internet. Supported devices can also use an internal barometer for enhanced precision. Manual input is also an option. ### What is the price of Jetting Vortex ROK GP Kart? Jetting Vortex ROK GP Kart is available for a one-time purchase of $7.99. ### What are the two tuning modes in Jetting Vortex ROK GP Kart? The app offers 'By regulations' mode, which provides specific values like main jet and spark plug details according to racing rules, and 'Freestyle' mode for more experimental tuning of various carburetor components. ### Can I save my carburetor configurations in Jetting Vortex ROK GP Kart? Yes, the app features a history tab where all your carburetor configurations are saved. You can also mark specific setups as favorites for easy access. ### Does Jetting Vortex ROK GP Kart have ads? No, Jetting Vortex ROK GP Kart does not contain advertisements. It is a paid application. ### What measurement units does Jetting Vortex ROK GP Kart support? The application supports various measurement units, including ºC and ºF for temperatures, meters and feet for altitude, liters, ml, gallons, and oz for fuel, and mb, hPa, mmHg, and inHg for pressures. ### How often is Jetting Vortex ROK GP Kart updated? The latest version of Jetting Vortex ROK GP Kart is 1.9, which was last updated on January 23, 2025. Updates typically occur to improve functionality and add features. ## Version history (last 5 releases) ### 1.9 — 2025-01-23 • Added Vortex ROK MINI engines (Cadet 9 with exhaust restrictor 16mm and Cadet 12) • Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: estrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL • Added new feature: added the ability to calibrate the barometer built into your phone or tablet (go to the “Settings“ tab, then “Measurement units“) • Added new feature: added various utilities (unit converters) (go to the “Settings“ tab, then “Utils“) ### 1.8 — 2022-03-13 • Added Vortex ROK MINI engines (Cadet 9 with exhaust restrictor 16mm and Cadet 12) • Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: estrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL • Added new feature: added the ability to calibrate the barometer built into your phone or tablet (go to the “Settings“ tab, then “Measurement units“) • Added new feature: added various utilities (unit converters) (go to the “Settings“ tab, then “Utils“) ### 1.7 — 2021-11-01 • Added Vortex ROK MINI engines (Cadet 9 with exhaust restrictor 16mm and Cadet 12) • Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: estrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL • Added new feature: added the ability to calibrate the barometer built into your phone or tablet (go to the “Settings“ tab, then “Measurement units“) • Added new feature: added various utilities (unit converters) (go to the “Settings“ tab, then “Utils“) ### 1.6 — 2021-10-29 • Added Vortex ROK MINI engines (Cadet 9 with exhaust restrictor 16mm and Cadet 12) • Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: estrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL • Added new feature: added the ability to calibrate the barometer built into your phone or tablet (go to the “Settings“ tab, then “Measurement units“) • Added new feature: added various utilities (unit converters) (go to the “Settings“ tab, then “Utils“) ### 1.5 — 2021-10-24 • Added Vortex ROK MINI engines (Cadet 9 with exhaust restrictor 16mm and Cadet 12) • Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: estrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL • Added new feature: added the ability to calibrate the barometer built into your phone or tablet (go to the “Settings“ tab, then “Measurement units“) • Added new feature: added various utilities (unit converters) (go to the “Settings“ tab, then “Utils“) ## Apps similar to Jetting Vortex ROK GP Kart | App | Rating | Price | Category | | --- | --- | --- | --- | | [MyRaceLab: Lap & Race Timer](https://appshunter.io/ios/app/myracelab-lap-and-race-timer/id1604449684) | — | Free | Sports | | [Prisma Electronics](https://appshunter.io/ios/app/prisma-electronics/id6670408611) | — | Free | Sports | | [Kart Chassis Setup](https://appshunter.io/ios/app/kart-chassis-setup/id885032175) | 5.0 (1) | $7.99 | Sports | | [Jetting for Dellorto VHSH PRO](https://appshunter.io/ios/app/jetting-for-dellorto-vhsh-pro/id1455771430) | 3.7 (3) | $9.99 | Sports | | [RaceStudio 3](https://appshunter.io/ios/app/racestudio-3/id6443408349) | 2.8 (6) | Free | Sports | | [Jetting for Rotax Max EVO Kart](https://appshunter.io/ios/app/jetting-for-rotax-max-evo-kart/id1001903588) | — | $7.99 | Sports | ## More apps by Ballistic Solutions LLC - [Jetting for TM KZ / ICC Kart](https://appshunter.io/ios/app/jetting-for-tm-kz-icc-kart/id1450856766) - [Jetting Modena KZ1 / KZ2 Kart](https://appshunter.io/ios/app/jetting-modena-kz1-kz2-kart/id1451498700) - [Jetting Vortex KZ1 / KZ2 Kart](https://appshunter.io/ios/app/jetting-vortex-kz1-kz2-kart/id1451631744) - [Jetting IAME KZ1 / KZ2 Kart](https://appshunter.io/ios/app/jetting-iame-kz1-kz2-kart/id1451745477) - [Jetting Rotax Max EVO Kart](https://appshunter.io/ios/app/jetting-rotax-max-evo-kart/id1451969138) - [Jetting Rotax Max Kart](https://appshunter.io/ios/app/jetting-rotax-max-kart/id1453317954) All apps by Ballistic Solutions LLC: https://appshunter.io/developer/1611909747 --- *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 2026-09-08.*