# Log Dyno vs CarTest

The clearest difference is price: CarTest at Free against Log Dyno's $13.99. CarTest also leads on rating (4.2 vs 3.4) and review sentiment (44% vs 15%). Log Dyno's advantage is in-app purchases (none vs 3) and ads (none vs shown). On ratings volume and device support there is nothing between them.

CarTest is free to download; Log Dyno costs $13.99 up front. CarTest sells 3 in-app purchases, starting at $3.99 per 3 months. Log Dyno asks for nothing beyond the download.

CarTest holds the better App Store score, 4.2 against 3.4. Both are backed by a comparable volume of ratings — 10 and 13 respectively. Written reviews point the same way: 15% of Log Dyno's written reviews are positive against 44% of CarTest's.

Log Dyno ships an update every 4 months, CarTest monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Log Dyno | CarTest |
| --- | --- | --- |
| Price | $13.99 | **Free** |
| Rating | [3.4 (10 ratings)](https://appshunter.io/ios/app/log-dyno/id1453544823/reviews) | **[4.2 (13 ratings)](https://appshunter.io/ios/app/cartest-performance-tester/id1534136951/reviews)** |
| Number of ratings | 10 | **13** |
| Positive reviews | 15.4% of reviews | **44.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#139** | — |
| Size | 128 MB | 8 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Adam Keninger](https://appshunter.io/developer/966549024) | [Takao Ichimura](https://appshunter.io/developer/1474061593) |

## What reviewers say

### Log Dyno

[App page](https://appshunter.io/ios/app/log-dyno/id1453544823)

**Currently charting:** #139 Top Paid · Sports (US App Store)

This app analyzes your car's datalog files to measure torque and horsepower using your mobile device. It provides detailed analysis, recommends optimal gear shifts, and allows comparison of multiple measurements.

**Highlights:** Measure torque and horsepower from datalogs, Virtual dyno analysis, Optimal gear shift recommendations, Compare multiple measurements, Supports various datalog file formats, Customizable vehicle data input

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

**In-app purchases:** none


### CarTest

[App page](https://appshunter.io/ios/app/cartest-performance-tester/id1534136951)

Measure your vehicle's acceleration performance with this tool. Easily track times like 0-60 mph or 0-1/4 mile. Useful for performance testing and safe driving awareness on public roads.

**Highlights:** Measure 0-60 mph and 0-1/4 mile times, Track acceleration on public roads, Repeatable measurements with Start/Sensing, Countdown start with false start detection, View and share previous results, Selectable speed units (km/h or mph)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Feature enhancements | $3.99 | per 3 months |
| Feature enhancements | $5.99 | per year |
| Feature enhancements | $9.99 | one-time |


## Frequently asked questions

### Is Log Dyno free?

Log Dyno costs $13.99, with no in-app purchases.

### Is CarTest free?

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

### Which has better reviews, Log Dyno or CarTest?

CarTest is rated higher. Log Dyno averages 3.4 out of 5 from 10 ratings, while CarTest averages 4.2 from 13 ratings.

### Do Log Dyno or CarTest have ads?

CarTest shows ads; Log Dyno does not.

### Which is updated more often, Log Dyno or CarTest?

Log Dyno ships an update every 4 months, and CarTest monthly. Most recently, Log Dyno was updated on November 2, 2026 and CarTest 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.*