# SpeedBox Performance Tracking vs Harry's Dyno

The clearest difference is review sentiment: SpeedBox Performance Tracking at 47% against Harry's Dyno's 0%. SpeedBox Performance Tracking also leads on rating (3.0 vs 1.0) and ratings volume (22 vs 2). Harry's Dyno's advantage is iOS requirement (12.0 vs 16.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

SpeedBox Performance Tracking costs $1.99 and Harry's Dyno $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SpeedBox Performance Tracking holds the better App Store score, 3.0 against 1.0. That said, the two scores are not equally well evidenced: SpeedBox Performance Tracking has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 47% of SpeedBox Performance Tracking's written reviews are positive against 0% of Harry's Dyno's.

SpeedBox Performance Tracking ships an update every 2 months, Harry's Dyno every 3 months. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | SpeedBox Performance Tracking | Harry's Dyno |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Rating | **[3.0 (22 ratings)](https://appshunter.io/ios/app/speedbox-performance-tracking/id1037598878/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/harrys-dyno/id1148400332/reviews) |
| Number of ratings | **22** | 2 |
| Positive reviews | **47.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | Paid |
| Size | 7 MB | 41 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dominik Reichert](https://appshunter.io/developer/710755006) | [Harald Schlangmann](https://appshunter.io/developer/307688601) |

## What reviewers say

### SpeedBox Performance Tracking

[App page](https://appshunter.io/ios/app/speedbox-performance-tracking/id1037598878)

Automated sprint timing for sports cars using GPS. Track performance data like quarter mile times and 0-60 mph with hands-off, automatic measurement. Ideal for drag racing, street racing, and track days.

**Highlights:** Automated launch and quarter mile timing, GPS-based real-time data tracking, Multiple preset performance modes (0-60 mph, 1/4 mile, etc.), Hands-off, automatic measurement, GameCenter integration for leaderboards and sharing, Low-budget solution for track days

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Harry's Dyno

[App page](https://appshunter.io/ios/app/harrys-dyno/id1148400332)

Measure vehicle performance with high precision using GPS and OBD sensors. Test acceleration and deceleration across custom speed ranges, analyze detailed results, and store data locally. Supports external sensors for enhanced accuracy.

**Highlights:** GPS and OBD sensor integration, Custom speed range testing (acceleration/deceleration), Detailed results analysis, Two-cursor data inspection, Local data storage and filtering, Data export to various formats

**In-app purchases:** none


## Frequently asked questions

### Is SpeedBox Performance Tracking free?

SpeedBox Performance Tracking costs $1.99, with no in-app purchases.

### Is Harry's Dyno free?

Harry's Dyno costs $3.99, with no in-app purchases.

### Which has better reviews, SpeedBox Performance Tracking or Harry's Dyno?

SpeedBox Performance Tracking is rated higher. SpeedBox Performance Tracking averages 3.0 out of 5 from 22 ratings, while Harry's Dyno averages 1.0 from 2 ratings.

### Do SpeedBox Performance Tracking or Harry's Dyno have ads?

Neither SpeedBox Performance Tracking nor Harry's Dyno shows ads.

### Which is updated more often, SpeedBox Performance Tracking or Harry's Dyno?

SpeedBox Performance Tracking ships an update every 2 months, and Harry's Dyno every 3 months. Most recently, SpeedBox Performance Tracking was updated on October 17, 2026 and Harry's Dyno on October 12, 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.*