# SYLVANIA Smart Home vs Constraint Engine

The clearest difference is in-app purchases: SYLVANIA Smart Home at none against Constraint Engine's 2. SYLVANIA Smart Home also leads on iOS requirement (13.0 vs 16.0). Constraint Engine's advantage is update cadence (daily vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. Constraint Engine sells 2 in-app purchases, starting at $4.99 per month. SYLVANIA Smart Home asks for nothing beyond the download.

SYLVANIA Smart Home ships an update every 4 months, Constraint Engine daily. The most recent releases landed on October 17, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | SYLVANIA Smart Home | Constraint Engine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (231 ratings)](https://appshunter.io/ios/app/sylvania-smart-home/id1277773398/reviews)** | — |
| Number of ratings | **231** | — |
| Positive reviews | 10.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Free | — |
| Size | 27 MB | 10 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LEDVANCE LLC](https://appshunter.io/developer/1277773397) | [Mark Barker](https://appshunter.io/developer/1896741919) |

## What reviewers say

### SYLVANIA Smart Home

[App page](https://appshunter.io/ios/app/sylvania-smart-home/id1277773398)

Easily update your SYLVANIA SMART+ HomeKit accessories to the latest firmware. This app ensures your smart home devices have the newest features and improvements without needing a separate hub.

**Highlights:** Firmware updates for SMART+ accessories, HomeKit integration, No hub required, View accessory status, Automatic update process

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Works well
- 👍 Flawless
- 👍 Fairly good

**What reviewers complain about**

- 🐛 Constantly disconnecting
- 🐛 Unresponsive
- 🐛 Crashes frequently
- 🐛 Buggy app
- 🐛 Firmware updates don't work

**Reported bugs**

- App crashes on launch
- Firmware updates fail
- Devices disappear from app
- Inability to connect to Bluetooth
- Lights behave erratically

**Requested features**

- Remove annoying pop-up notification
- Add 'never see again' option for notifications
- Improve app responsiveness and stability
- Better integration with smart home platforms
- Add scheduling/timer functionality


### Constraint Engine

[App page](https://appshunter.io/ios/app/constraint-engine/id6772520332)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Constraint Engine Pro | $4.99 | per month |
| Constraint Engine Pro | $29.99 | per year |


## Frequently asked questions

### Is SYLVANIA Smart Home free?

SYLVANIA Smart Home is free to download, with no in-app purchases.

### Is Constraint Engine free?

Constraint Engine is free to download, with in-app purchases available.

### Do SYLVANIA Smart Home or Constraint Engine have ads?

Neither SYLVANIA Smart Home nor Constraint Engine shows ads.

### Which is updated more often, SYLVANIA Smart Home or Constraint Engine?

SYLVANIA Smart Home ships an update every 4 months, and Constraint Engine daily. Most recently, SYLVANIA Smart Home was updated on October 17, 2026 and Constraint Engine on October 5, 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.*