KEWPAT vs EMS Maestro
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
KEWPAT
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.
- 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
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PAT (Portable Appliance) Testing / Test and Tag App for your iPhone or iPad. Designed to work with SimplyPats - Data can be imported and exported too and from SimplyPats Version 7 or SimplyPats Version 7 Manual Plus Edition PAT Testing Software** (for Windows OS). Manually log your PAT Testing Results using your iPhone or iPad, and if you own a Kewtech SMARTPAT you can control the PAT Tester via Remote mode using the App. The Database used by KEWPAT is capable of storing large amounts of PAT Test Data between single (if in-house Testing) or multiple (if PAT Testing as a Contractor) Customers, and is designed to be compatible with the SimplyPats Manual Plus or Downloading Edition software, available seperately. Information such as the Customer Contact details, Sites, Locations, Appliance Id's, Descriptions, Retest Periods as well as detailed Test Results can all be entered and stored. If you need to record extended information such as: Make, Model, Fuse, Serial Number, Price and Repair info and other information, you can choose to display the Extra Info screen during the Test Sequence. Detailed Visual Test Information can also be recorded with individual checks for Socket, Plug, Switch, Flex and Body as well as OK for continued use and suitable for the environment itβs operating in. As with the Extra info, this is an optional screen that can be turned on during the Test Sequence, otherwise just an overall Visual Test status will be recorded. Fields with the "Hold For List" option let you either type information in using the on screen keyboard, or select pre-defined entries from a list. You can add your own entries to any list which is a great way of entering frequently used Appliance Descriptions, Sites, Locations, Notes, Makes and Models etc. Scanning of Barcodes are supported for data entry of Appliance Id or Serial Numbers. QR Codes can be read using your main camera where they have been printed out via the KEWPAT App using a compatible Bluetooth Printer (available separately). Limits and Results for each test are pre-configured but can be overwritten or selected from a list. The Resistance Calculator can also be used to set the Limit for Earth Bond in Manual Mode. Both Visual and Electrical Retest Periods can be set manually or calculated automatically using the Risk Assessment tool. Support for taking photos is included. The App can be configured in various ways depending on what PAT Testing information you need to record. Features at a glance: - Export Data to SimplyPats** - Import SimplyPats Data Files (ideal for repopulating the App with Data) - Remote Control Kewtech SMARTPAT. - Quick Manual entry of data for non downloadable PAT machines. - Barcode Scanning.* - Take Photos.* - Annotations (Arrows) on Photos. - Comprehensive search and Filter of test results. - Easy Custom Test setup for SMARTPAT. - User definable lists for Appliance Descriptions, Sites, Locations. - Extra Notes fields, Make Model, Appliance Serial Number which can be switched off if not wanted. - IET COP Rev 4 Extended Visual Questions (again can be switched off is simple Visual Pass and Fail required. - Ability to print labels using a Compatible Bluetooth Printer. - Multiple Barcode label formats including QR and Code39. - Inbuilt Resistance calculator to calculate resistance of Cables by CSV and length. - Inbuilt Risk calculator to give suggested IET COP Rev 4 retest periods. - Collect customer signature on App on completion of work. - Email summary of tests direct to Customer. - Ability to store 10's of thousands of assets and test results. - Flip between Dark or Light Colour schemes. - Charge and repair Codes compatible with SimplyPats. - Repeat Last Test using SMARTPAT. - Auto increment Appliance Id (inc Alpha Prefix). * Certain features or functionality may depend on your device and the hardware available. Features may change without notice
EMS Maestro
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The EMS App is a complete solution designed for construction companies to manage on-site operations, worker attendance, project activities, and real-time site compliance. Built specifically for field teams working across multiple construction sites, the app ensures accurate tracking, improved efficiency, and seamless coordination between workers, supervisors, and management. With the EMS app, site workers can securely punch in and punch out using QR codes placed at each project location. The app verifies each punch with precise real-time location, ensuring workers are physically present on-site and cannot check in from outside the designated area. This helps maintain attendance accuracy, improve compliance, and prevent fraudulent time entries. Supervisors and managers can use the app to oversee daily site operations, view registered workers, track attendance records, and monitor work progress across all project sites. The app includes powerful tools to create and manage RV contracts, variations, on-site quotes, and timesheet records, making job costing and project management faster and more efficient. For construction companies handling large or multi-site projects, the EMS app offers a centralized platform to view and manage project details, resources, site information, worker logs, and essential documents. Whether for project planning, on-site execution, or administrative tasks, the EMS app streamlines the entire workflow and reduces manual paperwork. Designed with reliability and field-use practicality in mind, the EMS App supports the productivity and safety of construction teams while improving communication between field staff and office management. It is the ideal companion for modern construction environments seeking accurate reporting, accountability, and improved operational control.
Screenshots
Verdict
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.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
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.
| Parameter | KEWPAT | EMS Maestro |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 34.8% of reviews | β |
| Update frequency | Every 4 months | Every 5 days β better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | β |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 12.0 β better | 16.1 |
| Further details β not scored | ||
| Size | 12 MB | 88 MB |
| Age rating | 4+ | 4+ |
| Developer | RSR Systems Ltd | FLITZEN TECHNOLOGIES UK LIMITED |
In-app purchases
KEWPAT
No in-app purchases
EMS Maestro
No in-app purchases








