# Fox + Son Jetmax vs LapLift Sync

The clearest difference is in-app purchases: LapLift Sync at none against Fox + Son Jetmax's 1. LapLift Sync also leads on update cadence (weekly vs every 3 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Fox + Son Jetmax sells 1 in-app purchase, starting at $7.99 per year. LapLift Sync asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Fox + Son Jetmax against 5.0 for LapLift Sync. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Fox + Son Jetmax ships an update every 3 months, LapLift Sync weekly. The most recent releases landed on September 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fox + Son Jetmax | LapLift Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/fox-plus-son-jetmax/id6748326003/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/laplift-sync/id6762408890/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Subscription | **Free** |
| Size | 16 MB | 29 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trophy Inc.](https://appshunter.io/developer/1752591571) | [Alexander Krochik](https://appshunter.io/developer/1894070349) |

## What reviewers say

### Fox + Son Jetmax

[App page](https://appshunter.io/ios/app/fox-plus-son-jetmax/id6748326003)

This application simplifies jetting calculations for Rotax engines, factoring in weather and altitude. It provides racers with precise tuning recommendations, including relative horsepower and an interactive gear chart, to optimize performance on race day.

**Highlights:** Rotax engine jetting calculator, Weather and altitude adjustments, Relative horsepower calculation, Interactive gear chart, Rotax tuning tips

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Yearly | $7.99 | per year |


### LapLift Sync

[App page](https://appshunter.io/ios/app/laplift-sync/id6762408890)

Seamlessly transfer your track data from an AiM logger to your LapLift account wirelessly. Avoid laptops and cables, and get your performance insights instantly after each session.

**Highlights:** Wireless Wi-Fi connection to AiM logger, Select and transfer specific sessions, Automatic resume on connection loss, Real-time transfer completion notifications, Automatic session pulling in Track Mode

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

**In-app purchases:** none


## Frequently asked questions

### Is Fox + Son Jetmax free?

Fox + Son Jetmax is free to download, with in-app purchases available.

### Is LapLift Sync free?

LapLift Sync is free to download, with no in-app purchases.

### Which has better reviews, Fox + Son Jetmax or LapLift Sync?

Fox + Son Jetmax and LapLift Sync are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Fox + Son Jetmax or LapLift Sync have ads?

Neither Fox + Son Jetmax nor LapLift Sync shows ads.

### Which is updated more often, Fox + Son Jetmax or LapLift Sync?

Fox + Son Jetmax ships an update every 3 months, and LapLift Sync weekly. Most recently, Fox + Son Jetmax was updated on September 23, 2026 and LapLift Sync on October 25, 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.*