# Source BT

> Bluetooth mesh LED spotlight control for individual or grouped fixtures. (iPhone/iPad app by CAST Lighting LLC..)

- Source: https://appshunter.io/ios/app/source-bt/id1498885597 (this page in markdown: same URL + `.md`)
- Developer: [CAST Lighting LLC.](https://appshunter.io/developer/1498885596)
- Category: Utilities
- Price: Free
- Rating: 4.30/5 from 8 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 12 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2020-05-06
- Data updated: 2026-07-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/source-bt/id1498885597/reviews.md

## What is Source BT?

Intelligent LED color changing spotlight control application by CAST Lighting. Light fixtures are controlled using Bluetooth mesh technology. Functions include full  RGBW light control of individual or fixture groupings, step less adjustment of brightness and color temperature according to requirements, and custom scene programming.

## Key features

- Bluetooth mesh control
- RGBW color adjustment
- Brightness and color temperature control
- Fixture grouping
- Custom scene programming

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/source-bt/id1498885597/reviews.md

### 3/5 — Needs a Timer Function

*2025-12-11*

It’s is decent at changing colors and brightness, but the Bluetooth is wonky. With some patience I got it to work. 
This app badly needs a timer function. I use an Eve switch to turn the lights on and off though Apple Home, and the app remembers the last scene. I really want functionality to change scenes automatically. This is primarily (only) because I want to switch scenes at midnight, for example, from full lighting to just my flag pole. This can be as simple as “when lights go on, start with scene 1 and after five hours switch to scene 2”. Modern apps should have more functionality than just a timer in my example and should be clock based. 
An upgrade is needed!

## Frequently asked questions about Source BT

### What is Source BT?

Source BT is an application by CAST LIGHTING LLC designed to control intelligent LED spotlights using Bluetooth mesh technology. It allows for full RGBW light control, stepless adjustment of brightness and color temperature, and custom scene programming.

### What devices does Source BT support?

Source BT is available for iPhone, iPad, and iPod devices. It utilizes Bluetooth mesh technology for communication with the light fixtures.

### How often is Source BT updated?

The latest version of Source BT is 15.4.4, which was last updated on April 16, 2026. This indicates a history of updates to maintain functionality and compatibility.

### What is the age rating for Source BT?

Source BT has an age rating of 4+, making it suitable for a wide range of users. This rating suggests that the app's content and functionality are appropriate for children and adults.

### Does Source BT have ads?

No, Source BT does not contain advertisements. As a free application, it provides an uninterrupted user experience without any ad interruptions.

### What is the user rating for Source BT?

Source BT has a user rating of 4.3 stars based on 8 ratings. This indicates generally positive feedback from users who have reviewed the application.

### Can I control individual lights and groups with Source BT?

Yes, Source BT allows for full RGBW light control of individual fixtures or fixture groupings. You can manage your lights on a per-unit basis or as a collective.

### What kind of lighting adjustments can I make with Source BT?

You can make stepless adjustments to brightness and color temperature according to your requirements. The app also supports full RGBW color control for customized lighting effects.

## Version history (last 5 releases)

### 15.5.2 — 2026-07-12

Added Zone Summary View under '#' in all Zone screens, Device List, and the Scan screen. Added display of signal strength in Device List. Added sorting on several items, including signal strength in Device List. Signal strength is updates once a minute.

### 15.4.4 — 2026-04-16

Device (Fixture) recognition completely CAST Lighting Cloud data based.

### 15.4.3 — 2026-01-21

Icons for MR16, PAR36. Improvements to the Control Panel. Integration of PAR36. iOS 26 upgrades/improvements.

### 15.4.0 — 2025-10-20

Light Types obtained from CAST Lighting Cloud.

### 15.3.6 — 2025-07-14

Improved 'Device List'. 'Device List' now indicates if the App knows the type of light fixture.

## Apps similar to Source BT

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [SMRTscape Lighting](https://appshunter.io/ios/app/smrtscape-lighting/id1028167259) | 2.3 (10) | Free | Utilities |
| [BT Light](https://appshunter.io/ios/app/bt-light/id1347068408) | — | Free | Utilities |
| [FLEX Gold™ Vivid](https://appshunter.io/ios/app/flex-gold-vivid/id1370896785) | 3.0 (21) | Free | Utilities |
| [CORONA BT](https://appshunter.io/ios/app/corona-bt/id1640289766) | — | Free | Utilities |
| [BH Installer](https://appshunter.io/ios/app/bh-installer/id1660910953) | 4.7 (61) | Free | Utilities |
| [Sollos Colorsplash](https://appshunter.io/ios/app/sollos-colorsplash/id1436954394) | 1.9 (16) | Free | Utilities |

## Related topics

[source](https://appshunter.io/ios/topics/source)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-19.*