# Harry's Dyno vs Dexian Timer

The clearest difference is price: Dexian Timer at Free against Harry's Dyno's $3.99. Dexian Timer also leads on update cadence (fortnightly vs every 3 months). Harry's Dyno's advantage is iOS requirement (12.0 vs 15.5). On ads, in-app purchases and device support there is nothing between them.

Dexian Timer is free to download; Harry's Dyno costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Harry's Dyno ships an update every 3 months, Dexian Timer fortnightly. The most recent releases landed on September 18, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Harry's Dyno | Dexian Timer |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/harrys-dyno/id1148400332/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | — |
| Size | 41 MB | 134 MB |
| Requires iOS | **12.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Harald Schlangmann](https://appshunter.io/developer/307688601) | [骞 魏](https://appshunter.io/developer/1872259603) |

## What reviewers say

### 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


### Dexian Timer

[App page](https://appshunter.io/ios/app/dexian-timer/id6759848554)

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

**In-app purchases:** none


## Frequently asked questions

### Is Harry's Dyno free?

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

### Is Dexian Timer free?

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

### Do Harry's Dyno or Dexian Timer have ads?

Neither Harry's Dyno nor Dexian Timer shows ads.

### Which is updated more often, Harry's Dyno or Dexian Timer?

Harry's Dyno ships an update every 3 months, and Dexian Timer fortnightly. Most recently, Harry's Dyno was updated on September 18, 2026 and Dexian Timer on September 22, 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.*