# BT vs i

The clearest difference is rating: i at 2.6 against BT's 1.0. i also leads on ratings volume (96 vs 5) and update cadence (monthly vs every 3 months). On price, review sentiment, 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.

i holds the better App Store score, 2.6 against 1.0. That said, the two scores are not equally well evidenced: i has 96 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 20% of BT's written reviews are positive against 15% of i's, so the app with the better star average is not the one people write more warmly about.

BT ships an update every 3 months, i monthly. Both last shipped on November 2, 2026.

## The numbers

| Metric | BT | i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (5 ratings)](https://appshunter.io/ios/app/bt-light/id1128296700/reviews) | **[2.6 (96 ratings)](https://appshunter.io/ios/app/i-lamp/id1140789133/reviews)** |
| Number of ratings | 5 | **96** |
| Positive reviews | **20.0% of reviews** | 15.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 19 MB | 92 MB |
| Requires iOS | 12.0 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [德宇 周](https://appshunter.io/developer/1098728022) | [涛 余](https://appshunter.io/developer/964433903) |

## What reviewers say

### BT

[App page](https://appshunter.io/ios/app/bt-light/id1128296700)

Control smart lights with your phone. Adjust RGB, warm, and cool white colors, select scene modes, and set timers or alarms. This app offers a comprehensive lighting control experience.

**Highlights:** RGB and white light control, Scene mode adjustments, Warm and cold color control, Clock function, Timing and alarm settings

**Features:** macOS Compatibility

**In-app purchases:** none


### i

[App page](https://appshunter.io/ios/app/i-lamp/id1140789133)

Control smart color-changing lights wirelessly from your phone. Set different colors and sync them with music to create immersive visual experiences and vibrant atmospheres.

**Highlights:** Wireless smart light control, Color customization, Music synchronization, Scene creation, Mobile app interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BT free?

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

### Is i free?

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

### Which has better reviews, BT or i?

i is rated higher. BT averages 1.0 out of 5 from 5 ratings, while i averages 2.6 from 96 ratings.

### Do BT or i have ads?

Neither BT nor i shows ads.

### Which is updated more often, BT or i?

BT ships an update every 3 months, and i monthly. Most recently, BT was updated on November 2, 2026 and i on November 2, 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.*