# Crestron Zūm vs Signify Interact Builder

The clearest difference is review sentiment: Crestron Zūm at 50% against Signify Interact Builder's 0%. Signify Interact Builder's advantage is rating (4.2 vs 3.6) and update cadence (monthly vs every 5 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Signify Interact Builder holds the better App Store score, 4.2 against 3.6. Both are backed by a comparable volume of ratings — 8 and 6 respectively. Written reviews complicate that: 50% of Crestron Zūm's written reviews are positive against 0% of Signify Interact Builder's, so the app with the better star average is not the one people write more warmly about.

Crestron Zūm ships an update every 5 months, Signify Interact Builder monthly. Both last shipped on October 23, 2026.

## The numbers

| Metric | Crestron Zūm | Signify Interact Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (8 ratings)](https://appshunter.io/ios/app/crestron-zum/id1212507034/reviews) | **[4.2 (6 ratings)](https://appshunter.io/ios/app/signify-interact-builder/id1353793570/reviews)** |
| Number of ratings | **8** | 6 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free | Free |
| Size | 19 MB | 130 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [Crestron Electronics, Inc.](https://appshunter.io/developer/307560804) | [Signify Netherlands B.V.](https://appshunter.io/developer/979064009) |

## What reviewers say

### Crestron Zūm

[App page](https://appshunter.io/ios/app/crestron-zum/id1212507034)

This app simplifies wireless lighting control for spaces of any size, from single rooms to entire buildings. It allows users to easily name and group rooms, create custom lighting scenes, and manage daylighting and scheduled events.

**Highlights:** Wireless lighting control, Easy design and setup, Room naming and grouping, Custom scene creation, Daylighting optimization, Scheduled event management

**In-app purchases:** none


### Signify Interact Builder

[App page](https://appshunter.io/ios/app/signify-interact-builder/id1353793570)

This application allows installers to commission and test lighting systems, and business owners to manage their lighting infrastructure. It is designed for the Interact Pro system, offering comprehensive control and management capabilities.

**Highlights:** Lighting commissioning, Lighting system testing, Lighting system management, Interact Pro system compatibility, Installer tools, Business owner controls

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

**In-app purchases:** none


## Frequently asked questions

### Is Crestron Zūm free?

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

### Is Signify Interact Builder free?

Signify Interact Builder is free to download, with no in-app purchases.

### Which has better reviews, Crestron Zūm or Signify Interact Builder?

Signify Interact Builder is rated higher. Crestron Zūm averages 3.6 out of 5 from 8 ratings, while Signify Interact Builder averages 4.2 from 6 ratings.

### Do Crestron Zūm or Signify Interact Builder have ads?

Neither Crestron Zūm nor Signify Interact Builder shows ads.

### Which is updated more often, Crestron Zūm or Signify Interact Builder?

Crestron Zūm ships an update every 5 months, and Signify Interact Builder monthly. Most recently, Crestron Zūm was updated on October 23, 2026 and Signify Interact Builder on October 23, 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.*