efX vs Gridphase
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
efX
Monitor the status and usage of your x-ray systems remotely. Track scan progress, view live data, and manage your devices from anywhere. Requires a North Star Imaging X-ray system and service agreement.
- View all x-ray systems at once
- Monitor system usage
- Track scan progress
- View live system data
- Enterprise management options
- Private mode for secure environments
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See the status of all your x-ray systems. Monitor your system usages on the go for maximum efficiency. Connecting your NSI x-ray system(s) with the app is easy. Simply download the app, scan the QR code in efX-DR and you’re ready to go! Once you and your system are registered, keep up to date with what your system is doing from anywhere. No need to stand next to your system to wait for that scan to finish. KEEP AN EYE ON THE BIG PICTURE • View all your x-ray systems at once • See which systems are currently in use. • Option for enterprise management of your x-ray systems and mobile devices STAY UPDATED • View live data for your x-ray systems. Keep up to date with the progress of your scans • See the status of your x-ray: progression, interruption, completion • Preview what your system is scanning. • Allows private mode setting for secure environments. A North Star Imaging X-ray system, efX software, and active NSI service agreement is required to use this app.
Gridphase
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Introducing the Gridphase mobile application - your indispensable tool when working with the Gridphase handheld instrument. Designed to seamlessly integrate with your device, this app enhances its capabilities by enabling straightforward phase identification in power distribution networks. Gridphase mobile ensures that phase identification is just a tap away. Experience the synergy of your handheld instrument and mobile app working in perfect harmony, making your tasks simpler and more efficient.
Screenshots
Verdict
The clearest difference is iOS requirement: efX at 8.0 against Gridphase's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.
| Parameter | efX | Gridphase |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 65 MB | 57 MB |
| Age rating | 4+ | 4+ |
| Developer | North Star Imaging, Inc. | GRID INSTRUMENTS d.o.o. |
In-app purchases
efX
No in-app purchases
Gridphase
No in-app purchases









