Kart Chassis Setup vs FPAK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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. 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.
FPAK
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A App da FPAK dá aos seus utilizadores a possibilidade de facilmente entrarem no universo do desporto automóvel em Portugal, com acesso a informação sobre provas, noticias, e com uma área reservada para todos os nossos licenciados com a possibilidade de terem consigo versões digitais das suas licenças desportivas e passaportes técnicos. Principais funcionalidades: - Noticias atualizadas em tempo real; - Calendário de provas Nacional e Internacional; - Acesso a Regulamentação Geral, Desportiva e Técnica, Listas de Inscritos em Campeonatos e ainda Galerias de imagens; - Carteira de documentos: Após login com acesso a Licenças Desportivas e Passaportes Técnicos que estejam em nome do Licenciado no portal FPAK.
Screenshots
Verdict
The clearest difference is price: FPAK at Free against Kart Chassis Setup's $7.99. FPAK also leads on update cadence (every 2 weeks vs every 6 months) and iOS requirement (10.0 vs 17.0). 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
FPAK 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.
Kart Chassis Setup ships an update every 6 months, FPAK every 2 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.
| Parameter | Kart Chassis Setup | FPAK |
|---|---|---|
| Price | $7.99 | Free — better |
| Positive reviews | 42.9% of reviews | — |
| Update frequency | Every 6 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 17.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Ingenieria del Software ISEnet S.L. | InteligenSis - Engenharia de Sistemas, Lda |
In-app purchases
Kart Chassis Setup
No in-app purchases
FPAK
No in-app purchases
Questions
Is Kart Chassis Setup free?
Is FPAK free?
Do Kart Chassis Setup or FPAK have ads?
Which is updated more often, Kart Chassis Setup or FPAK?
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