# Rotax MAX Jetting vs Prisma Electronics

The clearest difference is update cadence: Rotax MAX Jetting at every 3 months against Prisma Electronics's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rotax MAX Jetting ships an update every 3 months, Prisma Electronics every 7 months. The most recent releases landed on October 8, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Rotax MAX Jetting | Prisma Electronics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (8 ratings)](https://appshunter.io/ios/app/rotax-max-jetting/id1152315347/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 7 months |
| Monetization | Free | — |
| Size | 13 MB | 14 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BRP-Rotax GmbH & Co KG](https://appshunter.io/developer/1152315346) | [Prisma Electronics srl](https://appshunter.io/developer/1766155967) |

## What reviewers say

### Rotax MAX Jetting

[App page](https://appshunter.io/ios/app/rotax-max-jetting/id1152315347)

This app helps users find the ideal carburetor main jet size for Rotax kart engines. It calculates settings based on ambient conditions like temperature, altitude, and air pressure, either automatically via GPS or manually. Supports various Rotax MAX engine types.

**Highlights:** Optimal main jet calculation, Supports multiple Rotax MAX engines, Automatic GPS weather data, Manual ambient parameter entry, Celsius/Fahrenheit toggle, Meters/Feet toggle

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Prisma Electronics

[App page](https://appshunter.io/ios/app/prisma-electronics/id6670408611)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rotax MAX Jetting free?

Rotax MAX Jetting is free to download, with no in-app purchases.

### Is Prisma Electronics free?

Prisma Electronics is free to download, with no in-app purchases.

### Do Rotax MAX Jetting or Prisma Electronics have ads?

Neither Rotax MAX Jetting nor Prisma Electronics shows ads.

### Which is updated more often, Rotax MAX Jetting or Prisma Electronics?

Rotax MAX Jetting ships an update every 3 months, and Prisma Electronics every 7 months. Most recently, Rotax MAX Jetting was updated on October 8, 2026 and Prisma Electronics on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*