# Engineering Station vs Asaas

The clearest difference is in-app purchases: Engineering Station at none against Asaas's 2. Engineering Station also leads on iOS requirement (13.0 vs 16.0). Asaas's advantage is update cadence (fortnightly vs every 27 months). On price, ads and device support there is nothing between them.

Both are free to download. Asaas sells 2 in-app purchases, starting at $5.99 per month. Engineering Station asks for nothing beyond the download.

Engineering Station ships an update every 27 months, Asaas fortnightly. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Engineering Station | Asaas |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 27 months | **Fortnightly** |
| Size | 93 MB | 76 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Ahmed Ahmed](https://appshunter.io/developer/1603830208) | [Abdullah Aloyaydi](https://appshunter.io/developer/1874696057) |

## What reviewers say

### Engineering Station

[App page](https://appshunter.io/ios/app/engineering-station/id1603830206)

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

**In-app purchases:** none


### Asaas

[App page](https://appshunter.io/ios/app/asaas-construction-calculator/id6760269443)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| اشتراك أساس الشهري | $5.99 | per month |
| اشتراك أساس السنوي | $22.99 | per year |


## Frequently asked questions

### Is Engineering Station free?

Engineering Station is free to download, with no in-app purchases.

### Is Asaas free?

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

### Do Engineering Station or Asaas have ads?

Neither Engineering Station nor Asaas shows ads.

### Which is updated more often, Engineering Station or Asaas?

Engineering Station ships an update every 27 months, and Asaas fortnightly. Most recently, Engineering Station was updated on October 8, 2026 and Asaas on October 18, 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.*