# CloudLabs Acetylene Synthesis vs HazirTest

The clearest difference is in-app purchases: CloudLabs Acetylene Synthesis at none against HazirTest's 4. CloudLabs Acetylene Synthesis also leads on iOS requirement (9.0 vs 15.5). HazirTest's advantage is update cadence (every 2 weeks vs every 28 months). On price, ads and device support there is nothing between them.

Both are free to download. HazirTest sells 4 in-app purchases, starting at $19.99 per year. CloudLabs Acetylene Synthesis asks for nothing beyond the download.

CloudLabs Acetylene Synthesis ships an update every 28 months, HazirTest every 2 weeks. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CloudLabs Acetylene Synthesis | HazirTest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 2 weeks** |
| Size | 85 MB | 109 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiovany Orozco](https://appshunter.io/developer/1114670847) | [SERHAT DEMIROK](https://appshunter.io/developer/6799124710) |

## What reviewers say

### CloudLabs Acetylene Synthesis

[App page](https://appshunter.io/ios/app/cloudlabs-acetylene-synthesis/id1596481280)

**Features:** macOS Compatibility

**In-app purchases:** none


### HazirTest

[App page](https://appshunter.io/ios/app/hazirtest-omr-sheet-scanner/id6799124708)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter | $19.99 | per year |
| Standard | $34.99 | per year |
| Professional | $49.99 | per year |
| Premium | $79.99 | per year |


## Frequently asked questions

### Is CloudLabs Acetylene Synthesis free?

CloudLabs Acetylene Synthesis is free to download, with no in-app purchases.

### Is HazirTest free?

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

### Do CloudLabs Acetylene Synthesis or HazirTest have ads?

Neither CloudLabs Acetylene Synthesis nor HazirTest shows ads.

### Which is updated more often, CloudLabs Acetylene Synthesis or HazirTest?

CloudLabs Acetylene Synthesis ships an update every 28 months, and HazirTest every 2 weeks. Most recently, CloudLabs Acetylene Synthesis was updated on October 27, 2026 and HazirTest on October 25, 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.*