# simos.app vs HPDash Racer Dial

The clearest difference is monetization model: simos.app at free against HPDash Racer Dial's freemium. HPDash Racer Dial's advantage is update cadence (every 2 days vs weekly) and device support (4 vs 1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. simos.app sells 3 one-off in-app purchases and HPDash Racer Dial sells 1 in-app purchase, starting at $34.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for simos.app against 5.0 for HPDash Racer Dial. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

simos.app ships an update weekly, HPDash Racer Dial every 2 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | simos.app | HPDash Racer Dial |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/simosapp/id6760018423/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/hpdash-racer-dial-in-predictor/id6788461979/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 7 MB | 42 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Tycho Sebastian Holzer](https://appshunter.io/developer/1882338941) | [HPDash, LLC](https://appshunter.io/developer/6788461172) |

## What reviewers say

### simos.app

[App page](https://appshunter.io/ios/app/simosapp/id6760018423)

This tool provides diagnostic, data logging, and flashing capabilities for VAG petrol engines with specific Simos ECUs. It allows real-time monitoring of engine parameters, ECU identification, and analysis of recorded data through multi-channel graphs. Users can also update their ECU with stock or custom tunes.

**Highlights:** Real-time ECU parameter logging, ECU identification and info, Multi-channel log analysis graphs, ECU and TCU flashing, Support for Simos 18.x and 12.1 ECUs

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| App VIN Unlock | $17.99 | one-time |
| Wizard: Pops & Bangs - Single Bin | $17.99 | one-time |
| Stage 1 Bin | $179.99 | one-time |


### HPDash Racer Dial

[App page](https://appshunter.io/ios/app/hpdash-racer-dial-in-predictor/id6788461979)

This app helps drag racers predict their dial-in times using real-time atmospheric data measured at the track. It logs passes, analyzes performance, and provides data-driven predictions for optimal race strategy. Your data remains private and accessible offline.

**Highlights:** Log passes by hand or photo, Predict dial-in from measured air, Analyze car performance per setup, Real-time atmospheric data display, Live Dragy integration for run measurement, Offline functionality, Data export to CSV

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HPDash Racer Yearly | $34.99 | per year |


## Frequently asked questions

### Is simos.app free?

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

### Is HPDash Racer Dial free?

HPDash Racer Dial is free to download, with in-app purchases available.

### Which has better reviews, simos.app or HPDash Racer Dial?

simos.app and HPDash Racer Dial are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do simos.app or HPDash Racer Dial have ads?

Neither simos.app nor HPDash Racer Dial shows ads.

### Which is updated more often, simos.app or HPDash Racer Dial?

simos.app ships an update weekly, and HPDash Racer Dial every 2 days. Most recently, simos.app was updated on November 6, 2026 and HPDash Racer Dial on October 31, 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.*