# Author BT Update vs car ambient light

The clearest difference is update cadence: Author BT Update at monthly against car ambient light's every 2 months. car ambient light's advantage is iOS requirement (13.0 vs 16.0). 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.

Author BT Update ships an update monthly, car ambient light every 2 months. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Author BT Update | car ambient light |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (6 ratings)](https://appshunter.io/ios/app/car-ambient-light/id6503720930/reviews)** |
| Number of ratings | — | **6** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | — | Free |
| Size | 4 MB | 19 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [AUTHOR-ALARM](https://appshunter.io/developer/1344731145) | [海均 敖](https://appshunter.io/developer/1706516256) |

## What reviewers say

### Author BT Update

[App page](https://appshunter.io/ios/app/author-bt-update/id6475983875)

**Features:** macOS Compatibility

**In-app purchases:** none


### car ambient light

[App page](https://appshunter.io/ios/app/car-ambient-light/id6503720930)

Control your car's ambient lighting system with this utility software. Adjust colors, brightness, and effects to customize your vehicle's interior atmosphere.

**Highlights:** Ambient light control, Color adjustment, Brightness settings, Effect customization, Interior atmosphere customization

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Author BT Update free?

Author BT Update is free to download, with no in-app purchases.

### Is car ambient light free?

car ambient light is free to download, with no in-app purchases.

### Do Author BT Update or car ambient light have ads?

Neither Author BT Update nor car ambient light shows ads.

### Which is updated more often, Author BT Update or car ambient light?

Author BT Update ships an update monthly, and car ambient light every 2 months. Most recently, Author BT Update was updated on October 10, 2026 and car ambient light on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*