# Jetting CR125 Shifter Kart — user reviews

> 7 indexed App Store user reviews of Jetting CR125 Shifter Kart by ISEnet, rated 4.70/5 from 22 ratings.

- Source: https://appshunter.io/ios/app/jetting-cr125-shifter-kart/id830550109/reviews
- App overview in markdown: https://appshunter.io/ios/app/jetting-cr125-shifter-kart/id830550109.md
- Rating breakdown: 5★ 18 · 4★ 3 · 3★ 0 · 2★ 0 · 1★ 1

## Most critical reviews (7 lowest-rated)

### 4/5 — Modified in Colorado

*2019-05-11*

It seems to be a bit conservative but Great ap to have for a safe starting point.

### 4/5 — Very Good Pp

*2017-03-06*

Gives good directional information. My motors run leaner than the recommendations in the app, but the changes driven by atmospheric conditions are very good.

### 5/5 — Shifter racer

*2017-07-25*

Good basis app for starting points on jetting. All jetting is unique to conditions engines and areas but this app is very useful.

### 5/5 — Ignore my previous negative review

*2016-11-17*

Ignore the negative review. I see what he's doing. It's the corrected altitude which is what is used for jettting anyway. Will test and see how it works.

### 5/5 — Best jetting app

*2016-07-20*

I've been using this app for a couple of months now. I tested it out at Phoenix and El Paso, TX. So far, the jetting parameters are spot on. They tend to run on the rich side, which is always ideal for these expensive engines. I do run them at 1.5 richer just to be on the safe side as competition is more about the driver not the engine out here in El Paso with the Border Karting Association

### 5/5 — Shifter kart racer

*2016-05-26*

This app is good. But I just upgraded to a gravity feed fuel system. I do not know how this app is going to work out because it does not have the gfs on their applications.

### 5/5 — great tool

*2015-10-16*

This is a great product to give you a baseline to work from without the complex weather tools. Really helpful when weather changes too or when your kart has been in stored away for a few months.  Great product for the price, much cheaper than a new top end.

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*