Kart Chassis Setup3.1 - App Store

Tell the app how your kart behaves through a corner and it tells you what to change on the chassis. No guessing, no forums, no depending on somebody in the pit having a good day.

WHY THIS APP
. Set up your chassis and fix oversteer, understeer and any other handling problem: tell it how the kart behaves and it tells you what to change.
. Learn how to tune it: every piece of advice explains what each component is for, what changes you can make and what each one achieves.
. For beginners who want to set up like a pro and learn the techniques along the way, and for advanced drivers, with detailed pressures and temperatures for each wheel.
. Cold target pressure for 31 compounds, with the breakdown of why that number.
. Tyre temperatures typed in from your Apple Watch, with gloves on.
. Widgets and track mode: the pressure to set, big and high-contrast.
. A notebook of karts and sessions that follows you through your own iCloud.
. Send a session to your mechanic as data, not just a picture.
. One-off purchase. No subscription, no ads, no account.

HOW IT WORKS
You pick the symptom - understeer, oversteer, hopping, sliding on all four - where it happens (corner entry or exit) and how strongly you feel it. The app crosses that with your pressures, your temperatures and the conditions of the day, and gives you a list of adjustments ordered by priority: where to start, what is worth trying and what to do if it persists. Every piece of advice comes with its explanation and illustrations: it is not a black box.

COLD TARGET PRESSURE
What do I set cold BEFORE going out so the session ends inside the tyre's window? It accounts for the compound, air and track temperature, track condition, grip and total weight, and shows what moved the number. 31 compounds: 9 brands plus generics by hardness for when yours is not listed.

ON YOUR WRIST AND IN THE PIT
Apple Watch: the moment you come in, type in the temperatures of the four tyres (inside, middle, outside) with the Digital Crown, before they cool. They land on your iPhone. The target pressure is on the watch and on the watch face. Home and lock-screen widgets show the pressure to set, and track mode turns it into a huge, high-contrast number with the screen at full brightness.

THE NOTEBOOK
It saves every session with its pressures, temperatures, conditions, tyre and the advice you were given. Add the laps and your best time: it is the only thing that really tells you whether the setup worked. Several karts, each with its chassis. And it follows you between iPhone and iPad through your own iCloud, private to you; the session you are working on stays on each device.

FOR YOUR MECHANIC
Send a session by link, QR code or file. Your mechanic opens it in the app, reads exactly what you saw and saves it to their notebook: nothing is applied on its own, and no names, notes or position travel with it. Still available as an image for WhatsApp.

CATALOGUES
175 circuits from 25 countries, with position, length, layout type and abrasiveness where known. Tap Detect circuit and the app proposes the one you are at, only when you ask. 33 chassis models from 11 manufacturers. If yours is not there, type it in and it is saved all the same.

CALCULATORS AND UNITS
Gear ratio with the theoretical top speed of each combination, and air density with a reference you can save, with the pressure estimated from the circuit's altitude. PSI or bar, Celsius or Fahrenheit, kilos or pounds, switchable on the screen.

HELP AND HONESTY
Every screen has its own help, written by someone who has taken tyre temperatures in a paddock. The pressure windows come from tuner guides, distributors and the specialist press; when a figure is not confirmed, the app says so.

One-off purchase. No subscription, no ads, no account of ours. Works with no signal, which is how most paddocks are.

Version History Your setup in the pit and on your wrist.

NEW
• Apple Watch: type in the tyre temperatures with the Digital Crown the moment you come in. They land on your iPhone. Complications show the target pressure.
• Widgets for the home and lock screens with the cold pressure to set.
• Track mode: the target pressure as a huge, high-contrast number, with the screen at full brightness.
• iCloud: your karts and sessions follow you between iPhone and iPad.
• Send a session to your mechanic by link, QR code or file: they open it in the app and save it to their notebook.
• Detect circuit: tap a button and the app proposes the circuit you are at, only when you ask.
• Circuit catalogue merged with the one shared across ISEnet apps: 175 circuits from 25 countries, now with position and altitude. The new ones have no chassis data yet, and say so.
• Estimate the pressure from the circuit's altitude in the air density calculator.

Still a one-off purchase. No subscription and no ads.

IN PREVIOUS VERSIONS
3.0: the biggest update since 2013. Rebuilt interface with dark mode; cold target pressure for 31 compounds; the notebook with several karts and laps; gear ratio and air density calculators; help on every screen; seven languages. 3.1 6d ago The biggest update since 2013. The app has been rebuilt inside and out.

NEW
• Cold target pressure: what to set before going out, with 31 compounds from nine brands and the breakdown of why that number.
• Notebook: saves every session with its pressures, temperatures, conditions and advice. Add the laps and your best time, and compare it with earlier ones.
• Several karts, each with its own chassis.
• Share a whole session as an image, ready for WhatsApp.
• 142 circuits from 24 countries and 33 chassis models. And if yours is missing, you type it in.
• Gear ratio calculator, with the theoretical top speed of each combination.
• Air density calculator, with a reference you can save.
• Help on every screen, written from scratch.

BETTER
• Rebuilt interface, with dark mode and large type sizes.
• PSI or bar and Celsius or Fahrenheit, switchable from the screen itself.
• The setup engine handles the effect of temperature and weight more accurately.
• Seven languages reviewed from top to bottom.

FIXED
• The three temperature points were mirrored on the left-hand wheels.
• Corrected data errors in circuits and tyres.

Still a one-off purchase. No subscription and no ads. 3.0 Aug 11 A decimal input error in tyre pressures and temperatures is corrected. 2.1 11/04/2023 The interface is updated to include new devices and the dark mode.
The languages German, Italian, French, Portuguese and Russian are added.
Fixes some minor user interface bugs. 2.0.2 04/04/2020 The interface is updated to include new devices and the dark mode.
The languages German, Italian, French, Portuguese and Russian are added.
Fixes some minor user interface bugs. 2.0.1 04/03/2020 The interface is updated to include new devices and the dark mode.
The languages German, Italian, French, Portuguese and Russian are added. 2.0 04/02/2020 Changes in some texts and images. 1.4 02/14/2017 Minor changes in user interface. 1.3 04/24/2016 Minor changes in user interface.
Bug solved. 1.2 04/19/2016 Fixed display bug and network access error in iOS9. 1.1.1 10/19/2015 Bug fixes. New icon & images. 1.1 05/20/2015 1.0 06/07/2014