# Propeller vs CL Site Master

The clearest difference is update cadence: Propeller at fortnightly against CL Site Master's every 6 weeks. Propeller also leads on iOS requirement (12.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Propeller ships an update fortnightly, CL Site Master every 6 weeks. The most recent releases landed on September 9, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Propeller | CL Site Master |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | — |
| Size | 83 MB | 32 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Propeller Powered Ltd](https://appshunter.io/developer/694591869) | [CleanLink Software Ltd](https://appshunter.io/developer/415117250) |

## What reviewers say

### Propeller

[App page](https://appshunter.io/ios/app/propeller/id694591766)

This app streamlines field service operations for businesses with mobile engineers. It allows for electronic completion of all paperwork, job management, and real-time data syncing with an online portal. Secure cloud storage ensures compliance and eliminates lost documents.

**Highlights:** Real-time job information access, Electronic document creation, Customer database management, Job scheduling and diary management, Access to manufacturer literature, Photo documentation of work, Industry-standard certification generation

**Features:** Vision Pro support

**In-app purchases:** none


### CL Site Master

[App page](https://appshunter.io/ios/app/cl-site-master/id1367180561)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Propeller free?

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

### Is CL Site Master free?

CL Site Master is free to download, with no in-app purchases.

### Do Propeller or CL Site Master have ads?

Neither Propeller nor CL Site Master shows ads.

### Which is updated more often, Propeller or CL Site Master?

Propeller ships an update fortnightly, and CL Site Master every 6 weeks. Most recently, Propeller was updated on September 9, 2026 and CL Site Master on June 11, 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.*