Jetting CR125 Shifter Kart Downloads & RevenueJetting CR125 Shifter Kart · App Store
Not in any tracked top chart right now.
Updated 2 Nov 2026 · rankings refresh through the day
DeveloperISEnet
CategorySports
Price7.99 USD
Released
Rating★ 4.7 (23)
Version2.1
Age rating4+
First seen by us
28 Sep 2026
28 Sep 2026Installs (est.)100+ worldwide
Jetting CR125 Shifter Kart update history & changes
Last change · 12 events since 8 Mar 2014Full timeline ↓📈Dropped out of every chart we track✏️Description updated✏️New screenshots📦Updated to version 2.1🆕First spotted by AppInsider🆕Its developer released another app: Carburation pour Vortex ROK📦Version 2.0
Full timeline · 12 events
- 📈Jetting CR125 Shifter Kart dropped out of every chart we trackLast seen 12 Oct
- ✏️Jetting CR125 Shifter Kart: description updated· US
- ✏️Jetting CR125 Shifter Kart: new screenshots6 screenshots (was 4) · US
- ✏️Jetting CR125 Shifter Kart: devices changed+ Watch
- ✏️Jetting CR125 Shifter Kart: app got bigger1 MB → 4 MB (+243%)
- 📦Jetting CR125 Shifter Kart updated to version 2.1Version 2.1
• 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. And dark mode throughout.
• Alerts when the weather changes enough to change the main jet: "Air density has dropped by 1.8% since your last calculation".
• Fuel: 98 E5, E10, E15, ethanol-free, CIK-FIA or race fuel, and the jetting is corrected for it.
• Carburetor icing warning, using the criterion of civil aviation.
• Fuel and oil mix calculator.
• When you fetch the weather, the app detects the track you are at. 144 tracks in 22 countries.
• Logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code.
• Fine tuning changes the jetting again, and the pilot jet is chosen from the sizes Keihin sells.
• Location also works on iPad without GPS and indoors.
• Report a problem and rate the app, from Results and from Help.
IN EARLIER VERSIONS
• 2.0: run logbook with ratings for low, mid and high, laps and RPM; tracks with the altitude of the track itself, the US ones first; the weather station and the values you type in on a single screen; the app full screen on modern iPhones.… more - 🆕Jetting CR125 Shifter Kart first spotted by AppInsider#92 in Top Paid · Sports · United States
- 🆕Jetting CR125 Shifter Kart: its developer released another app: Carburation pour Vortex ROK
- 🆕Jetting CR125 Shifter Kart: its developer released another app: Jetting for IAME Swift kart
- 🆕Jetting CR125 Shifter Kart: its developer released another app: Carburation DellOrto PHBH PHBG
- 📦Jetting CR125 Shifter Kart version 2.0Version 2.0
LOGBOOK
Saves every run with its conditions and its jetting, and afterwards you note what you actually fitted and how it went, separately for low, mid and high. With laps, best lap and maximum RPM. Exports to CSV.
TRACKS
143 tracks built in, the ones in the United States first. Pick yours and the altitude fills in on its own: the altitude of the track, not of the town.
CONDITIONS
The weather station data and the values you type in, on a single screen. No more going back and forth between two tabs.
FIXED
• The position screen did not work: the system had stopped reporting the position years ago.
• The app was drawn cropped on modern iPhones.
• The values on Weather ran off the right edge of the screen.
• Fine tuning was left written into the calculation table.
• Usage data no longer leaves the device.… more - 🆕Jetting CR125 Shifter 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
4.7 ★
23 ratings
Measured
Jetting CR125 Shifter Kart on the App Store
App details
App ID
830550109
Publisher
Ingenieria del Software ISEnet S.L.
On the store since
Mar 2014
12 years on the store
Minimum OS
iOS 15.0+
iPhone 6s and later
Devices
iPhone · iPad · Watch
Universal purchase
Content rating
4+
Languages
3
EN FR ES
Size
4 MB
Also listed in
Weather
Jetting CR125 Shifter 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 |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
23 ratings
Measured
Ratings
23
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
20/100
faster than 0% 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 CR125 Shifter Kart
The only jetting app made for the Honda CR125 shifter kart. It works out the jetting of Stock Moto and Mod Moto engines with Keihin PWK 38 and PWM 38 carbs, from the real temperature, humidity, pressure and altitude, and from the fuel you use.
WHY THIS APP
• Made for the CR125 shifter kart: Stock Moto and Mod Moto, fuel pump and airbox, which change the jetting and go into the calculation.
• 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.
• Track mode: your jetting large and high contrast, to read it in full sun with your helmet on.
• It alerts you when the weather changes enough to change the main jet, using the hourly forecast too.
• It takes your fuel into account: E10, E15, ethanol-free, CIK-FIA or race fuel.
• Carburetor icing warning, using the criterion of civil aviation.
• 144 tracks in 22 countries with the altitude of the track itself, the US ones first, and it detects which one you are at.
• A run logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code, with no accounts.
ENGINES
Stock Moto and Mod Moto, with a clamp-on air filter or an airbox with or without foam, and with or without a fuel pump.
RESULTS
The recommended jetting for your conditions and your engine: main jet, needle type and clip position, and pilot jet, plus air density, density altitude and relative horsepower. Three ±10% fine adjustments, on high, mid and low, to match it to your engine and how it is built. The values assume a #6 slide.
FUEL
98 E5 (93 AKI), E10 pump gas, E15 (Unleaded 88), ethanol-free, CIK-FIA, leaded race fuel, race E10, oxygenated, or your own with its stoichiometric ratio and density. With E10 the main jet goes up by about 1% compared with 98 E5. Octane does not change the jetting; ethanol does.
CARBURETOR ICING
From temperature, humidity and the chart civil aviation uses for carburetor 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, how much the density has changed since what you fitted, and how old the data is. When you start a track day, for 12 hours the main jet is on the lock screen, in the Dynamic Island and on your Apple Watch, and the app keeps an eye on the weather for you. Dark mode throughout.
CONDITIONS
From the nearest weather station or typed in by hand; it works the same with no signal. If you are at a track in the list, the app detects it and asks you whether that is the one.
ENGINE AND FUEL MIX
Engine class, airbox, fuel pump, fuel, oil and track type. Fuel and oil calculator: choose what you want to know, the oil, the fuel or the ratio, and the answer is shown large, in liters, milliliters, US or UK gallons and ounces, as a percentage and as 1:n.
LOGBOOK
Each run with its conditions and its jetting, then what you actually fitted and how i
WHY THIS APP
• Made for the CR125 shifter kart: Stock Moto and Mod Moto, fuel pump and airbox, which change the jetting and go into the calculation.
• 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.
• Track mode: your jetting large and high contrast, to read it in full sun with your helmet on.
• It alerts you when the weather changes enough to change the main jet, using the hourly forecast too.
• It takes your fuel into account: E10, E15, ethanol-free, CIK-FIA or race fuel.
• Carburetor icing warning, using the criterion of civil aviation.
• 144 tracks in 22 countries with the altitude of the track itself, the US ones first, and it detects which one you are at.
• A run logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code, with no accounts.
ENGINES
Stock Moto and Mod Moto, with a clamp-on air filter or an airbox with or without foam, and with or without a fuel pump.
RESULTS
The recommended jetting for your conditions and your engine: main jet, needle type and clip position, and pilot jet, plus air density, density altitude and relative horsepower. Three ±10% fine adjustments, on high, mid and low, to match it to your engine and how it is built. The values assume a #6 slide.
FUEL
98 E5 (93 AKI), E10 pump gas, E15 (Unleaded 88), ethanol-free, CIK-FIA, leaded race fuel, race E10, oxygenated, or your own with its stoichiometric ratio and density. With E10 the main jet goes up by about 1% compared with 98 E5. Octane does not change the jetting; ethanol does.
CARBURETOR ICING
From temperature, humidity and the chart civil aviation uses for carburetor 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, how much the density has changed since what you fitted, and how old the data is. When you start a track day, for 12 hours the main jet is on the lock screen, in the Dynamic Island and on your Apple Watch, and the app keeps an eye on the weather for you. Dark mode throughout.
CONDITIONS
From the nearest weather station or typed in by hand; it works the same with no signal. If you are at a track in the list, the app detects it and asks you whether that is the one.
ENGINE AND FUEL MIX
Engine class, airbox, fuel pump, fuel, oil and track type. Fuel and oil calculator: choose what you want to know, the oil, the fuel or the ratio, and the answer is shown large, in liters, milliliters, US or UK gallons and ounces, as a percentage and as 1:n.
LOGBOOK
Each run with its conditions and its jetting, then what you actually fitted and how i
Latest updates
2.1
Version 2.1
• 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. And dark mode throughout.
• Alerts when the weather changes enough to change the main jet: "Air density has dropped by 1.8% since your last calculation".
• Fuel: 98 E5, E10, E15, ethanol-free, CIK-FIA or race fuel, and the jetting is corrected for it.
• Carburetor icing warning, using the criterion of civil aviation.
• Fuel and oil mix calculator.
• When you fetch the weather, the app detects the track you are at. 144 tracks in 22 countries.
• Logbook synced through iCloud, and your jetting shared with your mechanic as a link or a QR code.
• Fine tuning changes the jetting again, and the pilot jet is chosen from the sizes Keihin sells.
• Location also works on iPad without GPS and indoors.
• Report a problem and rate the app, from Results and from Help.
IN EARLIER VERSIONS
• 2.0: run logbook with ratings for low, mid and high, laps and RPM; tracks with the altitude of the track itself, the US ones first; the weather station and the values you type in on a single screen; the app full screen on modern iPhones.
2.0
Version 2.0
LOGBOOK
Saves every run with its conditions and its jetting, and afterwards you note what you actually fitted and how it went, separately for low, mid and high. With laps, best lap and maximum RPM. Exports to CSV.
TRACKS
143 tracks built in, the ones in the United States first. Pick yours and the altitude fills in on its own: the altitude of the track, not of the town.
CONDITIONS
The weather station data and the values you type in, on a single screen. No more going back and forth between two tabs.
FIXED
• The position screen did not work: the system had stopped reporting the position years ago.
• The app was drawn cropped on modern iPhones.
• The values on Weather ran off the right edge of the screen.
• Fine tuning was left written into the calculation table.
• Usage data no longer leaves the device.
Store changes
What Jetting CR125 Shifter Kart changed on its store page: name, icon, screenshots, price, size, languages, requirements.
Description updated
New screenshots
6 screenshots (was 4)
Devices changed
+ Watch
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