Comparison

Kart Chassis Setup vs RFEDA

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

Head to head
About

Kart Chassis Setup

Analyze kart chassis data like tire pressures and temperatures to receive setup recommendations. This app helps both novice and experienced drivers understand and resolve chassis setup issues with detailed explanations and visual aids.

Highlights
  • Analyze tire pressures and temperatures
  • Receive chassis setup recommendations
  • Detailed explanations for adjustments
  • Supports sprint karts and all classes
  • Useful for novice and experienced drivers
  • Adjustable measure units
Features
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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. 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 its illustrations. It is not a black box: you can see why it suggests each thing. COLD TARGET PRESSURE The rest of the app analyses what you already measured. This screen answers the opposite question: 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 you the breakdown of what moved the number. 31 compounds from MG, Bridgestone, Vega, LeCont, MOJO, Maxxis, Evinco, Komet and Hoosier, plus generics by hardness for when yours is not listed. 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. With two or three sessions saved you can already compare. You can keep several karts. And share a whole session as an image, ready to send over WhatsApp, which is what already happens in every pit. CATALOGUES 142 circuits from 24 countries, with length, layout type and abrasiveness. 33 chassis models from 11 manufacturers. And if yours is not there, you type it in and it is saved all the same. CALCULATORS Gear ratio, with the theoretical top speed of each combination and how much one sprocket tooth moves things compared to one on the rear. And air density, to know how far today is from the day the engine ran perfectly. MEASURED YOUR WAY PSI or bar, Celsius or Fahrenheit, kilos or pounds. You switch from the screen itself and whatever you already measured is converted. HELP ON EVERY SCREEN Every screen has its own help, written by someone who has taken tyre temperatures in a paddock: how you actually measure, what mistakes people make and what each number means. HONEST ABOUT ITS DATA The pressure windows come from tuner guides, distributors and the specialist press. When a figure is not confirmed, the app says so. It does not sell you certainty it does not have. One-off purchase. No subscription, no ads, no account. Works with no signal, which is how most paddocks are.

About

RFEDA

Features
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Aplicación oficial RFEDA (Real Federación Española de Automovilismo). Podrás encontrar las últimas noticias, el calendario, consultar las clasificaciones, ver nuestras galerías fotográficas, disfrutar de nuestros vídeos, revisar el reglamento y mucho más...

Screenshots

Kart Chassis Setup4 screens
RFEDA4 screens

Verdict

The call

The clearest difference is price: RFEDA at Free against Kart Chassis Setup's $7.99. RFEDA also leads on iOS requirement (14.0 vs 17.0). Kart Chassis Setup's advantage is ads (none vs shown). On update cadence, 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

RFEDA is free to download; Kart Chassis Setup costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Kart Chassis Setup ships an update every 8 months, RFEDA every 16 months. The most recent releases landed on September 21, 2026 and May 16, 2026 respectively.

Scorecard3 real differences · 7 level
Kart Chassis Setup versus RFEDA: the parameters behind the verdict, then further details
ParameterKart Chassis SetupRFEDA
Price$7.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews42.9% of reviews—
Number of ratings1 — better—
Update frequencyEvery 8 months — betterEvery 16 months
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.014.0 — better
Further details — not scored
Size9 MB47 MB
Age rating4+17+
DeveloperISEnetReal Federación Española de Automovilismo

In-app purchases

None

Kart Chassis Setup

No in-app purchases

None

RFEDA

No in-app purchases

Questions

Is Kart Chassis Setup free?
Kart Chassis Setup costs $7.99, with no in-app purchases.
Is RFEDA free?
RFEDA is free to download, with no in-app purchases.
Do Kart Chassis Setup or RFEDA have ads?
RFEDA shows ads; Kart Chassis Setup does not.
Which is updated more often, Kart Chassis Setup or RFEDA?
Kart Chassis Setup ships an update every 8 months, and RFEDA every 16 months. Most recently, Kart Chassis Setup was updated on September 21, 2026 and RFEDA on May 16, 2026.

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