# MultiChrono vs Jetting Vortex OK & OK

The clearest difference is review sentiment: Jetting Vortex OK & OK at 100% against MultiChrono's 50%. Jetting Vortex OK & OK also leads on rating (5.0 vs 1.0) and update cadence (weekly vs fortnightly). MultiChrono's advantage is price ($2.99 vs $7.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

MultiChrono costs $2.99 and Jetting Vortex OK & OK $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Jetting Vortex OK & OK holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 50% of MultiChrono's written reviews are positive against 100% of Jetting Vortex OK & OK's.

MultiChrono ships an update fortnightly, Jetting Vortex OK & OK weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MultiChrono | Jetting Vortex OK & OK |
| --- | --- | --- |
| Price | **$2.99** | $7.99 |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/multichrono/id713925239/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/jetting-vortex-ok-and-ok-junior/id1531090972/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Paid | Paid |
| Size | 2 MB | 39 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alvaro Maroto Conde](https://appshunter.io/developer/707767270) | [Ballistic Solutions LLC](https://appshunter.io/developer/1611909747) |

## What reviewers say

### MultiChrono

[App page](https://appshunter.io/ios/app/multichrono/id713925239)

This sports timing app allows you to record multiple participant times simultaneously with independent controls. It offers lap tracking, graphical delta insights, and various export formats for your data. Enjoy customizable modes and background support.

**Highlights:** Multiple participant timing, Independent controls per participant, Lap control, Graphic delta insight, Multiple export formats (PDF, CSV, XLS, TXT), Background and dark mode support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Jetting Vortex OK & OK

[App page](https://appshunter.io/ios/app/jetting-vortex-ok-and-ok-junior/id1531090972)

This app recommends optimal carburetor configurations for Vortex OK & OK-Junior kart engines based on weather data and engine specifications. It provides detailed settings, fuel mix calculations, and a history of configurations.

**Highlights:** Optimal carburetor jetting recommendations, Automatic weather data acquisition, Manual weather data input, Detailed configuration values (screws, pop-off, spark plug), Fuel mix calculator and graphic display, Carburetor ice warning, Configurable units of measurement

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MultiChrono free?

MultiChrono costs $2.99, with no in-app purchases.

### Is Jetting Vortex OK & OK free?

Jetting Vortex OK & OK costs $7.99, with no in-app purchases.

### Which has better reviews, MultiChrono or Jetting Vortex OK & OK?

Jetting Vortex OK & OK is rated higher. MultiChrono averages 1.0 out of 5 from 1 ratings, while Jetting Vortex OK & OK averages 5.0 from 1 ratings.

### Do MultiChrono or Jetting Vortex OK & OK have ads?

Neither MultiChrono nor Jetting Vortex OK & OK shows ads.

### Which is updated more often, MultiChrono or Jetting Vortex OK & OK?

MultiChrono ships an update fortnightly, and Jetting Vortex OK & OK weekly. Most recently, MultiChrono was updated on November 1, 2026 and Jetting Vortex OK & OK on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*