# KETRA vs PhaseX NFC App

The clearest difference is update cadence: KETRA at every 2 weeks against PhaseX NFC App's every 9 months. KETRA also leads on iOS requirement (7.0 vs 15.0). 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.

KETRA ships an update every 2 weeks, PhaseX NFC App every 9 months. The most recent releases landed on October 13, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | KETRA | PhaseX NFC App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (6 ratings)](https://appshunter.io/ios/app/ketra/id1177122390/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 101 MB | 21 MB |
| Requires iOS | **7.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lutron Electronics co., Inc.](https://appshunter.io/developer/303875058) | [DMF Inc.](https://appshunter.io/developer/1680978929) |

## What reviewers say

### KETRA

[App page](https://appshunter.io/ios/app/ketra/id1177122390)

Control your Ketra lighting system remotely via WiFi. This app allows you to connect to your keypads and manage your lighting installations from your mobile device, offering enhanced flexibility and ease of use. Requires a Ketra lighting system with an N4 hub and a Ketra account.

**Highlights:** Remote keypad control, WiFi connectivity, Manage multiple keypads, Control lighting installations, Requires N4 hub

**Features:** Vision Pro support

**In-app purchases:** none


### PhaseX NFC App

[App page](https://appshunter.io/ios/app/phasex-nfc-app/id6502630045)

**In-app purchases:** none


## Frequently asked questions

### Is KETRA free?

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

### Is PhaseX NFC App free?

PhaseX NFC App is free to download, with no in-app purchases.

### Do KETRA or PhaseX NFC App have ads?

Neither KETRA nor PhaseX NFC App shows ads.

### Which is updated more often, KETRA or PhaseX NFC App?

KETRA ships an update every 2 weeks, and PhaseX NFC App every 9 months. Most recently, KETRA was updated on October 13, 2026 and PhaseX NFC App on October 16, 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.*