# simos.app vs Truck Explorer v8

The clearest difference is in-app purchases: Truck Explorer v8 at none against simos.app's 3. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. simos.app sells 3 one-off in-app purchases. Truck Explorer v8 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for simos.app against 5.0 for Truck Explorer v8. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

simos.app ships an update every 6 days, Truck Explorer v8 every 9 days. The most recent releases landed on October 24, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | simos.app | Truck Explorer v8 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/simosapp/id6760018423/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/truck-explorer-v8/id6761520106/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 9 days |
| Monetization | Free | Free |
| Size | 6 MB | 256 MB |
| Requires iOS | 17.6 | **17** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Tycho Sebastian Holzer](https://appshunter.io/developer/1882338941) | [DIELEKTRIK](https://appshunter.io/developer/1603051956) |

## 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. Monitor real-time engine parameters, analyze recorded sessions with graphs, and update your ECU with stock or custom tunes.

**Highlights:** Real-time ECU parameter monitoring, Live data logging via Bluetooth LE, ECU identification (software/calibration IDs), Multi-channel graph analysis of logged sessions, ECU and TCU flashing (stock and custom tunes), 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 |


### Truck Explorer v8

[App page](https://appshunter.io/ios/app/truck-explorer-v8/id6761520106)

This specialized tool offers comprehensive programming and diagnostic solutions for trucks, buses, and heavy vehicles. It enables reading/writing control unit memory, ECU repair, key programming, and parameter adjustments. Supports a wide range of major heavy vehicle brands.

**Highlights:** Read/write/clone control unit memory, Repair and recover ECUs, Program new keys, Immobilizer off functionality, Pair/unpair ECUs, Change speed and torque limits, Perform OBD and bench diagnostics

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is simos.app free?

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

### Is Truck Explorer v8 free?

Truck Explorer v8 is free to download, with no in-app purchases.

### Which has better reviews, simos.app or Truck Explorer v8?

simos.app and Truck Explorer v8 are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do simos.app or Truck Explorer v8 have ads?

Neither simos.app nor Truck Explorer v8 shows ads.

### Which is updated more often, simos.app or Truck Explorer v8?

simos.app ships an update every 6 days, and Truck Explorer v8 every 9 days. Most recently, simos.app was updated on October 24, 2026 and Truck Explorer v8 on October 6, 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.*