Jetting for Rotax Max EVO Kart Downloads & RevenueJetting for Rotax Max EVO Kart · App Store
Jetting for Rotax Max EVO Kart is #89 in Sports Paid in France and charting in 6 of 30 countries we track.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperISEnet
CategorySports
Price7.99 GBP
Released
Rating★ 0.0 (0)
Version2.6
Age rating4+
First seen by us
24 Sep 2026
24 Sep 2026Installs (est.)500+ worldwide
Jetting for Rotax Max EVO Kart update history & changes
Last change · 33 events since 22 Jun 2015Full timeline ↓📈Entered the top 100📈New best rank in the overall chart: #81✏️Description updated✏️New screenshots📦Updated to version 2.6🆕First spotted by AppInsider🆕Its developer released another app: Carburation pour Vortex ROK📦Version 2.5
Full timeline · 33 events
- 📈Jetting for Rotax Max EVO Kart entered the top 100Top Paid · Sports · CA
- 📈Jetting for Rotax Max EVO Kart new best rank in the overall chart: #81Top Paid · All Apps · AR
- 📈Jetting for Rotax Max EVO Kart entered the top 100Top Paid · All Apps · AR
- ✏️Jetting for Rotax Max EVO Kart: description updated· JP
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · JP
- ✏️Jetting for Rotax Max EVO Kart: description updated· BR
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · BR
- ✏️Jetting for Rotax Max EVO Kart: description updated· CN
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · CN
- 📈Jetting for Rotax Max EVO Kart new best rank in the overall chart: #149Top Paid · All Apps · ES
- ✏️Jetting for Rotax Max EVO Kart: devices changed+ Watch
- ✏️Jetting for Rotax Max EVO Kart: app got bigger3 MB → 7 MB (+166%)
- ✏️Jetting for Rotax Max EVO Kart: description updated· GB, AU, AE
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · GB, AE
- ✏️Jetting for Rotax Max EVO Kart: description updated· FR
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · FR
- ✏️Jetting for Rotax Max EVO Kart: description updated· DE
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · DE
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · AU
- ✏️Jetting for Rotax Max EVO Kart: description updated· IT
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · IT
- ✏️Jetting for Rotax Max EVO Kart: description updated· RU
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · RU
- ✏️Jetting for Rotax Max EVO Kart: description updated· IN
- ✏️Jetting for Rotax Max EVO Kart: new screenshots6 screenshots (was 5) · IN
- 📦Jetting for Rotax Max EVO Kart updated to version 2.6Version 2.6
• Apple Watch, widgets and Live Activity: your main jet for right now on your wrist, on the lock screen and in the Dynamic Island throughout your track day.
• Track mode: your jetting large and high contrast, to read it in full sun with your helmet on.
• Alerts when the weather changes enough to change the main jet or the needle: "Air density has risen by 1.6 % since your last calculation. The main jet stays at 125; the needle goes to clip 4".
• Fuel: 98 E5, E10, ethanol-free or race fuel, and the jetting is corrected for it.
• Carburettor icing warning, using the criterion of civil aviation.
• 144 tracks, and when you fetch the weather the app detects which one you are at.
• Logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code.
• Location also works on iPad without GPS and indoors, and reporting a problem is one tap away from Results.
The calculation coefficients do not change: with 98 E5, the usual fuel, the result is the same as before.
IN EARLIER VERSIONS
• 2.5: fuel and oil mix calculator, and a refreshed icon.
• 2.4: track logbook with self-calibration; Micro and Mini by spec (MY20) instead of by year; the two neighbouring jets; sharing as an image; Conditions on a single screen; new interface with dark mode and six more languages.
• 2.3: the app renewed for iOS 26, with engine years up to the current one and 0 °C no longer read as 25.… more - 📈Jetting for Rotax Max EVO Kart entered the top 10Top Paid · Sports · DE
- 🆕Jetting for Rotax Max EVO Kart first spotted by AppInsider#90 in Top Paid · Sports · France
- 🆕Jetting for Rotax Max EVO Kart: its developer released another app: Carburation pour Vortex ROK
- 🆕Jetting for Rotax Max EVO Kart: its developer released another app: Jetting for IAME Swift kart
- 🆕Jetting for Rotax Max EVO Kart: its developer released another app: Carburation DellOrto PHBH PHBG
- 📦Jetting for Rotax Max EVO Kart version 2.5The mix calculator, and a refreshed icon.
• Mix calculator: converts between fuel, oil and ratio. You pick at the top which of the three you want to know — that one is shown in large type — and adjust the other two below, so the screen only ever has two controls and both are data.
• Fuel and oil each have their own independent unit: litres, millilitres, US gallons, imperial gallons and US or imperial ounces. Changing the unit does not change the mix, only the number it is written with.
• The ratio is shown both ways at once, as a percentage and as 1:n, because they are the same number seen from the other side: 4 % is 1:25.
• It lives on the engine screen, right below the oil percentage, and one button leaves the ratio set in the jetting calculation. If you pick one outside the range the app calculates with, it tells you and offers the nearest, instead of trimming it without a word.
• The minus and plus on each slider jump to the next round figure, so you can hit an exact value without fighting your finger.
• The percentage is oil against fuel, not against the total mix: at 4 %, five litres of fuel take 200 ml of oil. The app says so on the screen itself, because it is the most common confusion of all.
• The calculator has its own help, in all thirteen languages of the app.
• Refreshed icon: the kart and the driver are the same as ever, the treatment is what changed.
WHAT 2.4 BROUGHT, WHICH NEVER SHIPPED
If you are coming from 2.3, this version also brings you all of this:
• Track logbook: save every session with the circuit, the conditions, the jet you actually fitted, how it felt, the laps and the best time. Exports to CSV.
• Auto calibration: with several sessions saved, the app spots whether your engine systematically asks for more or less than the recommendation, and offers to set it as your default fine tuning.
• Micro MAX and Mini MAX are picked by specification, not by year. The MY20 kit can be retrofitted, so a 2018 engine that has been updated is MY20; up to 2.3 there was no way to tell the app, and it calculated it as pre-MY20 — nearly eleven jet points out.
• The recommended jet shows both neighbours, in green when the choice is clear and in amber when the real value sits halfway between two.
• Fine tuning works in steps of 0.5 and tells you what each step achieves, instead of moving an abstract number.
• Oil type: XPS Castor, synthetic or something else, stored with your setup and in every logbook session.
• Share the setup as an image, to send it to the team group.
• Weather and GPS were the same task split across two screens: they are now a single Conditions screen, showing when the reading was taken and warning you if it is more than 30 minutes old.
• The interface has been rebuilt: dark mode, system text size, VoiceOver, rotation and a proper iPad layout.
• Six new languages: Catalan, Danish, Dutch, Norwegian, Swedish and Traditional Chinese. The app is now available in thirteen languages.
Not one coefficient of the calculation has been touched in either version, and updating changes no result. What changes is that you can now tell the app your Micro or Mini has the MY20 kit. Oil type does not drive the calculation either, because what drives it is the percentage, not the base of the lubricant.… more - 🆕Jetting for Rotax Max EVO Kart released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Best rank now
#89
Sports PaidMeasured
Jetting for Rotax Max EVO Kart on the App Store
App details
App ID
1001903588
Publisher
Ingenieria del Software ISEnet S.L.
On the store since
Jun 2015
11 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
13
CA DA NL EN FR DE IT NB PT RU ES SV …
Size
7 MB
Also listed in
Utilities
Jetting for Rotax Max EVO Kart downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| France | SportsPaid | #89 |
 Russia | SportsPaid | #56 |
 Australia | SportsPaid | #95 |
 Germany | SportsPaid | #175 |
 United Arab Emirates | SportsPaid | #68 |
 Italy | SportsPaid | #192 |
Apps near Jetting for Rotax Max EVO Kart on the chart
Sports Paid, around #89.
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.0★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
48/100
faster than 47% of Sports apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Jetting for Rotax Max EVO Kart
Main jet, needle position and spark plug for your Rotax Max EVO — Micro MAX, Mini MAX, Junior, Senior, DD2 and Supermax — worked out from the real temperature, humidity, pressure and altitude, and from the fuel you use.
WHY THIS APP
• Apple Watch app, widgets and Live Activity: your main jet for right now on your wrist, on the lock screen and in the Dynamic Island.
• It alerts you when the weather changes enough to change the main jet or the needle, also from the hourly forecast.
• Track mode: your jetting large and high contrast, to read it in full sun with your helmet on.
• A logbook that learns from your engine: if it always wants a little more or a little less, the app spots it and suggests it.
• It takes the fuel into account: 98 E5, E10, ethanol-free or race fuel.
• Carburettor icing warning, using the criterion of civil aviation.
• 144 tracks in 22 countries with the altitude of the track itself, and it detects which one you are at.
• Logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code, no accounts.
RESULTS
The recommended main jet in large type, with the exact value and the two jets it falls between: green when the choice is clear and amber when it sits halfway. Also the K57 needle position, spark plug, air density, density altitude and relative horsepower. High and mid fine tuning go in steps of 0.1 and show what each step does.
FUEL
98 E5, E10, ethanol-free, leaded race fuel, E10 race fuel, oxygenated, or your own with its stoichiometric ratio and density. With E10 the main jet goes up by about 1 % and the needle by more than half a position compared with 98 E5.
CARBURETTOR ICING
From the temperature, the humidity and the chart civil aviation uses for carburettor engines, the app warns you when there is a risk at full throttle, and Conditions tells you whether there is one at idle and on the grid.
TRACK MODE AND TRACK DAY
Your jetting full screen at maximum brightness, and how much the density has changed since what you fitted. When you start a track day, for 12 hours the main jet is on the lock screen, in the Dynamic Island and on Apple Watch, and the app watches the weather for you. Dark mode throughout.
CONDITIONS
From the nearest weather station or typed in by hand; with no coverage it works just the same. If you are at a track on the list, the app detects it and asks whether that's the one.
ENGINE AND MIX
Class, model year or spec (for Micro and Mini, standard or MY20, because the MY20 kit can be retrofitted), spark plug, float height, airbox, oil percentage and type, fuel and track type. Fuel and oil calculator in litres, millilitres, gallons and ounces, as a percentage and as 1:n.
LOGBOOK
Each session with its conditions and jetting, and then what you actually fitted and how it went — lean, right or rich — at low, mid and high, with laps, best lap and max RPM. Synced through iCloud across your devices and exported to CSV.
SHARING
As an image card, a link or a QR code: your mec
WHY THIS APP
• Apple Watch app, widgets and Live Activity: your main jet for right now on your wrist, on the lock screen and in the Dynamic Island.
• It alerts you when the weather changes enough to change the main jet or the needle, also from the hourly forecast.
• Track mode: your jetting large and high contrast, to read it in full sun with your helmet on.
• A logbook that learns from your engine: if it always wants a little more or a little less, the app spots it and suggests it.
• It takes the fuel into account: 98 E5, E10, ethanol-free or race fuel.
• Carburettor icing warning, using the criterion of civil aviation.
• 144 tracks in 22 countries with the altitude of the track itself, and it detects which one you are at.
• Logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code, no accounts.
RESULTS
The recommended main jet in large type, with the exact value and the two jets it falls between: green when the choice is clear and amber when it sits halfway. Also the K57 needle position, spark plug, air density, density altitude and relative horsepower. High and mid fine tuning go in steps of 0.1 and show what each step does.
FUEL
98 E5, E10, ethanol-free, leaded race fuel, E10 race fuel, oxygenated, or your own with its stoichiometric ratio and density. With E10 the main jet goes up by about 1 % and the needle by more than half a position compared with 98 E5.
CARBURETTOR ICING
From the temperature, the humidity and the chart civil aviation uses for carburettor engines, the app warns you when there is a risk at full throttle, and Conditions tells you whether there is one at idle and on the grid.
TRACK MODE AND TRACK DAY
Your jetting full screen at maximum brightness, and how much the density has changed since what you fitted. When you start a track day, for 12 hours the main jet is on the lock screen, in the Dynamic Island and on Apple Watch, and the app watches the weather for you. Dark mode throughout.
CONDITIONS
From the nearest weather station or typed in by hand; with no coverage it works just the same. If you are at a track on the list, the app detects it and asks whether that's the one.
ENGINE AND MIX
Class, model year or spec (for Micro and Mini, standard or MY20, because the MY20 kit can be retrofitted), spark plug, float height, airbox, oil percentage and type, fuel and track type. Fuel and oil calculator in litres, millilitres, gallons and ounces, as a percentage and as 1:n.
LOGBOOK
Each session with its conditions and jetting, and then what you actually fitted and how it went — lean, right or rich — at low, mid and high, with laps, best lap and max RPM. Synced through iCloud across your devices and exported to CSV.
SHARING
As an image card, a link or a QR code: your mec
Latest updates
2.6
Version 2.6
• Apple Watch, widgets and Live Activity: your main jet for right now on your wrist, on the lock screen and in the Dynamic Island throughout your track day.
• Track mode: your jetting large and high contrast, to read it in full sun with your helmet on.
• Alerts when the weather changes enough to change the main jet or the needle: "Air density has risen by 1.6 % since your last calculation. The main jet stays at 125; the needle goes to clip 4".
• Fuel: 98 E5, E10, ethanol-free or race fuel, and the jetting is corrected for it.
• Carburettor icing warning, using the criterion of civil aviation.
• 144 tracks, and when you fetch the weather the app detects which one you are at.
• Logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code.
• Location also works on iPad without GPS and indoors, and reporting a problem is one tap away from Results.
The calculation coefficients do not change: with 98 E5, the usual fuel, the result is the same as before.
IN EARLIER VERSIONS
• 2.5: fuel and oil mix calculator, and a refreshed icon.
• 2.4: track logbook with self-calibration; Micro and Mini by spec (MY20) instead of by year; the two neighbouring jets; sharing as an image; Conditions on a single screen; new interface with dark mode and six more languages.
• 2.3: the app renewed for iOS 26, with engine years up to the current one and 0 °C no longer read as 25.
2.5
The mix calculator, and a refreshed icon.
• Mix calculator: converts between fuel, oil and ratio. You pick at the top which of the three you want to know — that one is shown in large type — and adjust the other two below, so the screen only ever has two controls and both are data.
• Fuel and oil each have their own independent unit: litres, millilitres, US gallons, imperial gallons and US or imperial ounces. Changing the unit does not change the mix, only the number it is written with.
• The ratio is shown both ways at once, as a percentage and as 1:n, because they are the same number seen from the other side: 4 % is 1:25.
• It lives on the engine screen, right below the oil percentage, and one button leaves the ratio set in the jetting calculation. If you pick one outside the range the app calculates with, it tells you and offers the nearest, instead of trimming it without a word.
• The minus and plus on each slider jump to the next round figure, so you can hit an exact value without fighting your finger.
• The percentage is oil against fuel, not against the total mix: at 4 %, five litres of fuel take 200 ml of oil. The app says so on the screen itself, because it is the most common confusion of all.
• The calculator has its own help, in all thirteen languages of the app.
• Refreshed icon: the kart and the driver are the same as ever, the treatment is what changed.
WHAT 2.4 BROUGHT, WHICH NEVER SHIPPED
If you are coming from 2.3, this version also brings you all of this:
• Track logbook: save every session with the circuit, the conditions, the jet you actually fitted, how it felt, the laps and the best time. Exports to CSV.
• Auto calibration: with several sessions saved, the app spots whether your engine systematically asks for more or less than the recommendation, and offers to set it as your default fine tuning.
• Micro MAX and Mini MAX are picked by specification, not by year. The MY20 kit can be retrofitted, so a 2018 engine that has been updated is MY20; up to 2.3 there was no way to tell the app, and it calculated it as pre-MY20 — nearly eleven jet points out.
• The recommended jet shows both neighbours, in green when the choice is clear and in amber when the real value sits halfway between two.
• Fine tuning works in steps of 0.5 and tells you what each step achieves, instead of moving an abstract number.
• Oil type: XPS Castor, synthetic or something else, stored with your setup and in every logbook session.
• Share the setup as an image, to send it to the team group.
• Weather and GPS were the same task split across two screens: they are now a single Conditions screen, showing when the reading was taken and warning you if it is more than 30 minutes old.
• The interface has been rebuilt: dark mode, system text size, VoiceOver, rotation and a proper iPad layout.
• Six new languages: Catalan, Danish, Dutch, Norwegian, Swedish and Traditional Chinese. The app is now available in thirteen languages.
Not one coefficient of the calculation has been touched in either version, and updating changes no result. What changes is that you can now tell the app your Micro or Mini has the MY20 kit. Oil type does not drive the calculation either, because what drives it is the percentage, not the base of the lubricant.
Store changes
What Jetting for Rotax Max EVO Kart changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated 
New screenshots
6 screenshots (was 5)
Description updated 
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