# JB4 PRO vs ALERT!

The clearest difference is price: JB4 PRO at Free against ALERT!'s $1.99. ALERT!'s advantage is chart position (#191 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

JB4 PRO is free to download; ALERT! costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | JB4 PRO | ALERT! |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.4 (14 ratings)](https://appshunter.io/ios/app/jb4-pro/id6746129072/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free | — |
| Best chart rank | — | **#191** |
| Size | 22 MB | 1 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Burger Motorsports, Inc](https://appshunter.io/developer/1815297026) | [Red Huskies LLC](https://appshunter.io/developer/287950232) |

## What reviewers say

### JB4 PRO

[App page](https://appshunter.io/ios/app/jb4-pro/id6746129072)

Integrate your performance tuner with your smartphone to adjust engine maps, view real-time data, and manage system settings. This app requires a specific Bluetooth adapter for full functionality.

**Highlights:** Change maps, Monitor live engine data, Record logs, Manage fault codes, Update JB4 firmware, Smartphone integration

**In-app purchases:** none


### ALERT!

[App page](https://appshunter.io/ios/app/alert-nosework-timers/id6765973694)

**Currently charting:** #191 Top Paid · Sports (US App Store)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is JB4 PRO free?

JB4 PRO is free to download, with no in-app purchases.

### Is ALERT! free?

ALERT! costs $1.99, with no in-app purchases.

### Do JB4 PRO or ALERT! have ads?

Neither JB4 PRO nor ALERT! shows ads.

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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.*