Comparison

Jetting Vortex ROK GP Kart vs Prisma Electronics

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Jetting Vortex ROK GP Kart

This app provides optimal carburetor and spark plug recommendations for Vortex ROK kart engines based on weather conditions and engine configuration. It offers two tuning modes, detailed configuration options, and a history of past setups. Supports automatic or manual weather data input and various measurement units.

Highlights
  • 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
Features
Currently charting
Read full description

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

About

Prisma Electronics

Features
Read full description

Download Analyze and share data from your HiPreMa5 tire gauges, Stopwatch and Air densimeter. The most complete tire gauges for motorsport.

Screenshots

Jetting Vortex ROK GP Kart4 screens
Prisma Electronics3 screens

Verdict

The call

The clearest difference is price: Prisma Electronics at Free against Jetting Vortex ROK GP Kart's $7.99. Jetting Vortex ROK GP Kart's advantage is update cadence (every 11 days vs every 7 months) and chart position (#164 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Prisma Electronics is free to download; Jetting Vortex ROK GP Kart costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Jetting Vortex ROK GP Kart ships an update every 11 days, Prisma Electronics every 7 months. The most recent releases landed on October 25, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 7 level
Jetting Vortex ROK GP Kart versus Prisma Electronics: the parameters behind the verdict, then further details
ParameterJetting Vortex ROK GP KartPrisma Electronics
Price$7.99Free — better
Rating3.5 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 11 days — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#164 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better17.0
Further details — not scored
Size43 MB14 MB
Age rating4+4+
DeveloperBallistic Solutions LLCPrisma Electronics srl

In-app purchases

None

Jetting Vortex ROK GP Kart

No in-app purchases

None

Prisma Electronics

No in-app purchases

Questions

Is Jetting Vortex ROK GP Kart free?
Jetting Vortex ROK GP Kart costs $7.99, with no in-app purchases.
Is Prisma Electronics free?
Prisma Electronics is free to download, with no in-app purchases.
Do Jetting Vortex ROK GP Kart or Prisma Electronics have ads?
Neither Jetting Vortex ROK GP Kart nor Prisma Electronics shows ads.
Which is updated more often, Jetting Vortex ROK GP Kart or Prisma Electronics?
Jetting Vortex ROK GP Kart ships an update every 11 days, and Prisma Electronics every 7 months. Most recently, Jetting Vortex ROK GP Kart was updated on October 25, 2026 and Prisma Electronics on October 9, 2026.

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