# Trax4 vs Flashcal+

The clearest difference is rating: Trax4 at 4.0 against Flashcal+'s 2.3. Trax4 also leads on in-app purchases (none vs 5) and device support (3 vs 1). Flashcal+'s advantage is review sentiment (50% vs 20%) and update cadence (every 3 weeks vs every 4 months). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Flashcal+ sells 4 one-off in-app purchases. Trax4 asks for nothing beyond the download.

Trax4 holds the better App Store score, 4.0 against 2.3. Both are backed by a comparable volume of ratings — 11 and 6 respectively. Written reviews complicate that: 20% of Trax4's written reviews are positive against 50% of Flashcal+'s, so the app with the better star average is not the one people write more warmly about.

Trax4 ships an update every 4 months, Flashcal+ every 3 weeks. The most recent releases landed on September 13, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Trax4 | Flashcal+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (11 ratings)](https://appshunter.io/ios/app/trax4/id1526380550/reviews)** | [2.3 (6 ratings)](https://appshunter.io/ios/app/flashcal-plus/id6739143913/reviews) |
| Number of ratings | **11** | 6 |
| Positive reviews | 20.0% of reviews | **50.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 9 MB | 124 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Intermotive Inc](https://appshunter.io/developer/1526380552) | [Holley Performance Products](https://appshunter.io/developer/1175069390) |

## What reviewers say

### Trax4

[App page](https://appshunter.io/ios/app/trax4/id1526380550)

This utility app displays real-time fuel levels, Miles To Empty (MTE), and diagnostic data from a connected Trax4 module. It provides essential vehicle information for monitoring and maintenance.

**Highlights:** Fuel level monitoring, Miles To Empty (MTE) display, Diagnostic information, Trax4 module integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Flashcal+

[App page](https://appshunter.io/ios/app/flashcal-plus/id6739143913)

This utility calibrates your Jeep Wrangler's speedometer after tire or gear changes. It offers TPMS adjustment and is designed for JK, JL, and JT models.

**Highlights:** Speedometer calibration, Tire size adjustment, Gear ratio adjustment, TPMS on/off, Supports JK, JL, JT models

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pedal Booster | $24.99 | one-time |
| Power Tuning | $124.99 | one-time |
| Features and Options | $124.99 | one-time |
| PCM Cross Ship | $274.99 | one-time |


## Frequently asked questions

### Is Trax4 free?

Trax4 is free to download, with no in-app purchases.

### Is Flashcal+ free?

Flashcal+ is free to download, with in-app purchases available.

### Which has better reviews, Trax4 or Flashcal+?

Trax4 is rated higher. Trax4 averages 4.0 out of 5 from 11 ratings, while Flashcal+ averages 2.3 from 6 ratings.

### Do Trax4 or Flashcal+ have ads?

Neither Trax4 nor Flashcal+ shows ads.

### Which is updated more often, Trax4 or Flashcal+?

Trax4 ships an update every 4 months, and Flashcal+ every 3 weeks. Most recently, Trax4 was updated on September 13, 2026 and Flashcal+ on September 11, 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.*