# Propeller vs ADEY ProCheck

The clearest difference is review sentiment: Propeller at 100% against ADEY ProCheck's 30%. Propeller also leads on update cadence (fortnightly vs every 6 weeks) and iOS requirement (12.0 vs 14.0). On price, ads, in-app purchases and monetization model 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, ADEY ProCheck every 6 weeks. The most recent releases landed on September 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Propeller | ADEY ProCheck |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 30.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 83 MB | 28 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Propeller Powered Ltd](https://appshunter.io/developer/694591869) | [Adey](https://appshunter.io/developer/1298515106) |

## 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


### ADEY ProCheck

[App page](https://appshunter.io/ios/app/adey-procheck/id1481851405)

This app helps heating engineers quickly test central heating system water quality using a smartphone and a separate test kit. It provides instant results for key parameters and offers recommendations for corrective actions. Results can be shared as PDF documents or stored in a management portal for review.

**Highlights:** Test central heating system water quality, Instant validation of system health, Tests Inhibitor, Corrosion, and pH levels, Provides recommendations for corrective action, Share results as PDF, Central management portal for results review

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Propeller free?

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

### Is ADEY ProCheck free?

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

### Do Propeller or ADEY ProCheck have ads?

Neither Propeller nor ADEY ProCheck shows ads.

### Which is updated more often, Propeller or ADEY ProCheck?

Propeller ships an update fortnightly, and ADEY ProCheck every 6 weeks. Most recently, Propeller was updated on September 27, 2026 and ADEY ProCheck on October 13, 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.*