# KEWPAT vs EMS Maestro

The clearest difference is update cadence: EMS Maestro at every 5 days against KEWPAT's every 4 months. KEWPAT's advantage is iOS requirement (12.0 vs 16.1). 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.

KEWPAT ships an update every 4 months, EMS Maestro every 5 days. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | KEWPAT | EMS Maestro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 34.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 12 MB | 88 MB |
| Requires iOS | **12.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [RSR Systems Ltd](https://appshunter.io/developer/1348350147) | [FLITZEN TECHNOLOGIES UK LIMITED](https://appshunter.io/developer/1696444047) |

## What reviewers say

### KEWPAT

[App page](https://appshunter.io/ios/app/kewpat/id1348350148)

This app streamlines portable appliance testing (PAT) and test and tag procedures for iPhones and iPads. It allows manual logging of results, remote control of specific testers, and comprehensive data storage for multiple customers and sites. Users can customize fields, scan barcodes, and attach photos for detailed record-keeping.

**Highlights:** Manual PAT testing data logging, Remote control of Kewtech SMARTPAT, Import/export data with SimplyPats software, Barcode scanning for data entry, Photo capture with annotations, Customizable user-defined lists, Risk assessment tool for retest periods

**Features:** macOS Compatibility

**In-app purchases:** none


### EMS Maestro

[App page](https://appshunter.io/ios/app/ems-maestro/id6451067399)

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

**In-app purchases:** none


## Frequently asked questions

### Is KEWPAT free?

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

### Is EMS Maestro free?

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

### Do KEWPAT or EMS Maestro have ads?

Neither KEWPAT nor EMS Maestro shows ads.

### Which is updated more often, KEWPAT or EMS Maestro?

KEWPAT ships an update every 4 months, and EMS Maestro every 5 days. Most recently, KEWPAT was updated on November 2, 2026 and EMS Maestro on November 7, 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.*