# KartMAX PRO EVO — Jetting for Rotax MAX engines

> Karting engine tuning app for Rotax MAX EVO, optimizing jetting with weather data. (iPhone/iPad app by Rafael Bartolome.)

- Source: https://appshunter.io/ios/app/kartmax-pro-evo/id806348482 (this page in markdown: same URL + `.md`)
- Developer: [Rafael Bartolome](https://appshunter.io/developer/382000336)
- Category: Sports, Utilities
- Price: $9.99
- Rating: 2.00/5 from 5 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.6 · 108 MB
- Languages: American English
- Released: 2014-01-31
- Data updated: 2026-08-28
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/kartmax-pro-evo/id806348482/reviews.md

## What is KartMAX PRO EVO?

The Nº1 jetting app for all Rotax MAX engines, EVO included. Get the right jet, needle clip position and spark plug for Senior, DD2, Junior, Mini and Micro MAX — in seconds, matched to the weather at your track.

KartMAX PRO EVO is a must-have for teams, professionals, engine tuners and club racers. Thousands of drivers all over the world rely on it every race weekend, from club events to national and international championships.

Set up your engine once. From then on, the app reads the weather conditions at the racetrack and recommends the jet, needle clip position and spark plug reference for your exact engine and carburetor configuration.

COVERS EVERY MAX CLASS
• DD2, Senior, Junior, Mini and Micro MAX
• EVO and non EVO engines with MaxChallenge setup and other configurations

TAKES EVERY DETAIL INTO ACCOUNT
• Keep as many engine configurations as you want
• Selectable K98 or K27 needle (non EVO)
• 3.6 or 5.2 floats weight (non EVO)
• Idle jet and idle emulsion tube (non EVO)
• Selectable needle valve for non EVO DD2
• Selectable intake restrictor and carburetor spacer for Micro and Mini classes (non EVO)
• Adjustable floats height (non EVO)
• Independent delta adjustment for main jet and needle pin — calibrate your particular engine
• Support for Denso, NGK and NGK-IX spark plugs
• Selectable fuel octane
• Adjustable fuel/oil ratio with a mix wizard for the perfect mix
• Carburetor ice warning
• Fine tuning
• International configurations supported

WEATHER, AUTOMATICALLY
KartMAX PRO EVO obtains your position and altitude automatically and fetches temperature, pressure and humidity from the nearest weather station over the internet. On supported devices the internal barometer is used for extra precision. Need more accuracy? Connect the readings from your own portable weather station.

LEARN AS YOU TUNE
Built-in documentation, how-tos, video tutorials and official manuals.

Wondering if it really works? Thousands of drivers use our software every weekend at national and international championships. Although most of them would rather keep it a secret ;)

Questions? Contact us — we answer every message, we act on user feedback, and we race with KartMAX PRO EVO ourselves.

## Key features

- Jetting recommendations
- Weather condition integration
- Support for EVO and non-EVO engines
- Multiple engine configurations
- Spark plug type selection
- Fuel octane and oil ratio adjustment
- Carburetor ice warning

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/kartmax-pro-evo/id806348482/reviews.md

### 2/5 — Support

*2021-03-30*

Have question and sent an email.  They say they can not provide support.

### 5/5 — Love it

*2020-03-11*

Simple,  easy to use & once you’ve dialed in your tune it’s set..

### 5/5 — Very useful app

*2015-09-06*

Yes it is pricey but for a beginner like me having my DD2 Evo engine delivering its best without any brain cramp was the immediate reward. Today's weather conditions were humid, cold-ish and I had no idea what to do on the carb. I blindly followed the app recommended setup. Engine response was crisp, lap times improved quite naturally. Awesome! 
Improvements? Maybe more functionalities such as a laptimer, more tutorials/videos online, or the possibility to save on a simple page the gear setup for each track (ideal: have this info shared online between users). Cheers.

### 5/5 — Kartmax pro

*2015-03-18*

Very very happy with the program does just what it says even if it's slightly out not to worry just move the dial towards lean or rich and it will recalculate the next time it receives information. Works even better with the iPhone 6 because of the built in barometer.

## Frequently asked questions about KartMAX PRO EVO

### What Rotax MAX EVO engines does KartMAX PRO EVO support?

KartMAX PRO EVO supports Senior, DD2, Junior, Mini, and Micro Rotax MAX EVO and non-EVO engines. It covers various configurations, including MaxChallenge setups and specific component selections like float weights and needle types.

### How does KartMAX PRO EVO use weather data?

The app automatically obtains temperature, pressure, and humidity from the nearest weather station via the internet. It can also utilize an internal barometer on supported devices for increased accuracy, or integrate with a portable weather station.

### What is the price of KartMAX PRO EVO?

KartMAX PRO EVO is a paid application, priced at $9.99. This one-time purchase provides access to all its engine tuning features.

### How often is KartMAX PRO EVO updated?

The application was last updated on September 29, 2019, with version 3.0. While updates have not been frequent recently, the existing features are comprehensive for its purpose.

### What spark plug types are supported by KartMAX PRO EVO?

KartMAX PRO EVO supports several popular spark plug brands and types, including Denso, NGK, NGK-IX, and NGK-DI. This allows for precise tuning based on the chosen ignition component.

### Can I save multiple engine configurations in KartMAX PRO EVO?

Yes, KartMAX PRO EVO allows users to save and manage as many engine configurations as they need. This is beneficial for teams or individuals who work with different karts or engine setups.

### What is the age rating for KartMAX PRO EVO?

KartMAX PRO EVO has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger individuals interested in karting.

### Does KartMAX PRO EVO have ads?

No, KartMAX PRO EVO does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused solely on engine tuning.

## Version history (last 5 releases)

### 4.0 — 2026-08-28

What's new in 4.0:

- Video tutorials now use an updated embedded player with a "Watch on YouTube" fallback.
- Documentation view has been modernized with improved link handling.
- Engine list automatically cleans up missing entries and restores defaults when needed.
- Improved connectivity checks and location permission handling.
- Stability and compatibility improvements for modern iOS.

### 3.0 — 2019-09-29

• iOS13 support
• EVO carburettor configuration is displayed in order to avoid confusion with the non EVO engines.
• New NGK-DI sparks added as standard configuration.
• Updated documentation and howto's.
• Improved calculation thanks to all your comments.

### 2.3 — 2017-10-04

• Fix weather data problems (we are really sorry)
• Better iOS11 support
• iPad support
• Bug fixes and stability improvements

### 2.2 — 2017-09-15

• iOS11 support
• Adaptive algorithm based on previous corrections
• Big screens visual improvements
• Under the hood updates for better performance
• Bug fixes and stability improvements

### 2.1 — 2016-03-11

• Adaptive algorithm based on previous corrections
• Big screens visual improvements
• Under the hood updates for better performance
• Bug fixes and stability improvements

Please, continue reporting personal corrections in order to increase the accuracy of the algorithm for your engine.

## Apps similar to KartMAX PRO EVO

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Jetting for Rotax Max EVO Kart](https://appshunter.io/ios/app/jetting-for-rotax-max-evo-kart/id1001903588) | — | $7.99 | Sports |
| [Jetting Vortex OK & OK-Junior](https://appshunter.io/ios/app/jetting-vortex-ok-and-ok-junior/id1531090972) | 5.0 (1) | $7.99 | Sports |
| [StopWatch4all-Pro](https://appshunter.io/ios/app/stopwatch4all-pro/id976503851) | — | $3.99 | Sports |
| [Jetting Rotax Max EVO Kart](https://appshunter.io/ios/app/jetting-rotax-max-evo-kart/id1451969138) | 4.9 (11) | $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 |
| [MAAT Mobile](https://appshunter.io/ios/app/maat-mobile/id1627222672) | — | Free | Sports |

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*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 2026-08-28.*