# simos.app vs 85Blends

The clearest difference is ads: simos.app at none against 85Blends's shown. simos.app also leads on update cadence (weekly vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. simos.app sells 3 one-off in-app purchases and 85Blends sells 1 in-app purchase, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

simos.app ships an update weekly, 85Blends fortnightly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | simos.app | 85Blends |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simosapp/id6760018423/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 7 MB | 24 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Tycho Sebastian Holzer](https://appshunter.io/developer/1882338941) | [Julian Figueroa](https://appshunter.io/developer/1892612260) |

## 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 |


### 85Blends

[App page](https://appshunter.io/ios/app/85blends/id6762037468)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 85Blends Pro | $3.99 | per month |


## Frequently asked questions

### Is simos.app free?

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

### Is 85Blends free?

85Blends is free to download, with in-app purchases available.

### Do simos.app or 85Blends have ads?

85Blends shows ads; simos.app does not.

### Which is updated more often, simos.app or 85Blends?

simos.app ships an update weekly, and 85Blends fortnightly. Most recently, simos.app was updated on November 6, 2026 and 85Blends 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.*