# Dyno Chart vs DragRacing

The clearest difference is rating: DragRacing at 4.1 against Dyno Chart's 1.2. DragRacing also leads on update cadence (monthly vs every 3 months) and review sentiment (33% vs 20%). Dyno Chart's advantage is ads (none vs shown) and iOS requirement (7.0 vs 15.0). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. Dyno Chart sells 1 one-off in-app purchase and DragRacing sells 3 in-app purchases, starting at $3.99 per 3 months. Whichever you choose, the download price is not the number that matters.

DragRacing holds the better App Store score, 4.1 against 1.2. Both are backed by a comparable volume of ratings — 6 and 15 respectively. Written reviews point the same way: 20% of Dyno Chart's written reviews are positive against 33% of DragRacing's.

Dyno Chart ships an update every 3 months, DragRacing monthly. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Dyno Chart | DragRacing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (6 ratings)](https://appshunter.io/ios/app/dyno-chart-obd-ii-engine-performance-tool/id602676538/reviews) | **[4.1 (15 ratings)](https://appshunter.io/ios/app/dragracing-real-drag-timer/id1581306865/reviews)** |
| Number of ratings | 6 | **15** |
| Positive reviews | 20.0% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 9 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [K SOLUTION LLC](https://appshunter.io/developer/289670447) | [Takao Ichimura](https://appshunter.io/developer/1474061593) |

## What reviewers say

### Dyno Chart

[App page](https://appshunter.io/ios/app/dyno-chart-obd-ii-engine-performance-tool/id602676538)

This tool analyzes your vehicle's engine performance, displaying max power and torque against RPM. It connects via an OBD II adapter to gather sensor data and generate detailed charts. Ensure compatibility before unlocking full features.

**Highlights:** Max power and torque vs RPM charts, OBD II sensor data collection, Vehicle compatibility check, ELM Wi-Fi/Bluetooth LE adapter support, In-app chart function unlock

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dyno Chart Unlock | $4.99 | one-time |


### DragRacing

[App page](https://appshunter.io/ios/app/dragracing-real-drag-timer/id1581306865)

Measure drag racing times accurately using GPS without specialized equipment. Track your 0-60 times, 1/4 mile, and 1/2 mile performance. Ideal for test runs and training, it offers multiple measurement points and result history.

**Highlights:** GPS-based time measurement, Multiple distance markers (60ft to 1/2 mile), 0-60 time and max speed tracking, Countdown start with false start detection, Sensing start for automatic measurement, Historical results storage (1000 cases), Unit selection (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 Dyno Chart free?

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

### Is DragRacing free?

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

### Which has better reviews, Dyno Chart or DragRacing?

DragRacing is rated higher. Dyno Chart averages 1.2 out of 5 from 6 ratings, while DragRacing averages 4.1 from 15 ratings.

### Do Dyno Chart or DragRacing have ads?

DragRacing shows ads; Dyno Chart does not.

### Which is updated more often, Dyno Chart or DragRacing?

Dyno Chart ships an update every 3 months, and DragRacing monthly. Most recently, Dyno Chart was updated on October 10, 2026 and DragRacing on October 7, 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.*