# Flux Link vs Keepsmile

The clearest difference is ads: Flux Link at none against Keepsmile's shown. Flux Link also leads on monetization model (free vs ad-supported). Keepsmile's advantage is update cadence (every 3 weeks vs every 24 months) and ratings volume (4.8K vs 6). On price, rating, 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.

Flux Link holds the better App Store score, 2.7 against 2.5. That said, the two scores are not equally well evidenced: Keepsmile has 4.8K ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 0% of Flux Link's written reviews are positive against 20% of Keepsmile's, so the app with the better star average is not the one people write more warmly about.

Flux Link ships an update every 24 months, Keepsmile every 3 weeks. The most recent releases landed on September 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Flux Link | Keepsmile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (6 ratings)](https://appshunter.io/ios/app/flux-link/id1487291071/reviews)** | [2.5 (4.8K ratings)](https://appshunter.io/ios/app/keepsmile/id1543351744/reviews) |
| Number of ratings | 6 | **4.8K** |
| Positive reviews | 0.0% of reviews | **20.1% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 24 months | **Every 3 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 54 MB | 122 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Subramaniam Karthik](https://appshunter.io/developer/1050558234) | [深圳市优智达科技有限公司](https://appshunter.io/developer/1651370948) |

## What reviewers say

### Flux Link

[App page](https://appshunter.io/ios/app/flux-link/id1487291071)

Control thousands of Bluetooth mesh light bulbs from your smartphone or tablet. Personalize your lighting with 16 million colors, group bulbs, set timers, and sync with music for endless possibilities.

**Highlights:** Control thousands of mesh bulbs, 16 million color palette, Group bulbs together, Setup timers, Sync bulbs to music

**Features:** macOS Compatibility

**In-app purchases:** none


### Keepsmile

[App page](https://appshunter.io/ios/app/keepsmile/id1543351744)

Control a wide range of smart lighting products, including strip lights, bulbs, and lamps. Adjust colors, brightness, and settings for various lighting types like pool lamps and car lights.

**Highlights:** Control strip lights, Manage LED bulbs, Operate floor lamps, Adjust wake lights, Control star lights, Manage car lights, Operate pool lamps

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 🔨 Customizable lights
- 🎨 Wide range of colors
- 💡 Music sync feature

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔍 Limited color control
- 💤 Timer feature not working
- 📺 Interferes with other devices
- 🔇 Mandatory ads

**Reported bugs**

- Lights randomly change color
- App crashes or freezes
- Bluetooth connection issues
- Inability to log in or register

**Requested features**

- More customization options
- Ability to create custom light patterns
- Integration with smart home platforms
- Option to disable ads


## Frequently asked questions

### Is Flux Link free?

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

### Is Keepsmile free?

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

### Which has better reviews, Flux Link or Keepsmile?

Flux Link is rated higher. Flux Link averages 2.7 out of 5 from 6 ratings, while Keepsmile averages 2.5 from 4.8K ratings.

### Do Flux Link or Keepsmile have ads?

Keepsmile shows ads; Flux Link does not.

### Which is updated more often, Flux Link or Keepsmile?

Flux Link ships an update every 24 months, and Keepsmile every 3 weeks. Most recently, Flux Link was updated on September 15, 2026 and Keepsmile on October 2, 2026.

---

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