# Blume LED vs U2C

The clearest difference is update cadence: U2C at every 4 days against Blume LED's every 107 months. 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.

Blume LED ships an update every 107 months, U2C every 4 days. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Blume LED | U2C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blume-led/id1288248844/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 107 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 18 MB | 74 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grant Patterson](https://appshunter.io/developer/587947101) | [DIRECT DEALS CORP](https://appshunter.io/developer/1798995378) |

## What reviewers say

### Blume LED

[App page](https://appshunter.io/ios/app/blume-led/id1288248844)

Control LEDs connected to a Bluetooth-enabled Arduino clone with your smartphone or tablet. This platform enables custom LED projects using a cross-platform app.

**Highlights:** Bluetooth LED control, Arduino project platform, Cross-platform app, Smartphone/tablet integration, Customizable LED projects

**Features:** macOS Compatibility

**In-app purchases:** none


### U2C

[App page](https://appshunter.io/ios/app/u2c/id6757843608)

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

**In-app purchases:** none


## Frequently asked questions

### Is Blume LED free?

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

### Is U2C free?

U2C is free to download, with no in-app purchases.

### Do Blume LED or U2C have ads?

Neither Blume LED nor U2C shows ads.

### Which is updated more often, Blume LED or U2C?

Blume LED ships an update every 107 months, and U2C every 4 days. Most recently, Blume LED was updated on September 10, 2026 and U2C on September 21, 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.*