# ECHO LED vs CPU

The clearest difference is ads: ECHO LED at none against CPU's shown. ECHO LED also leads on iOS requirement (8.0 vs 15.6). CPU's advantage is update cadence (daily vs every 5 weeks). On price, 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.

ECHO LED ships an update every 5 weeks, CPU daily. The most recent releases landed on September 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ECHO LED | CPU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/echo-led/id1029736620/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Free | — |
| Size | 11 MB | 5 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [勇强 夏](https://appshunter.io/developer/1043457850) | [Renya Miyahara](https://appshunter.io/developer/6789789604) |

## What reviewers say

### ECHO LED

[App page](https://appshunter.io/ios/app/echo-led/id1029736620)

Control LED lights using Bluetooth. Features include color selection from photos, music synchronization, microphone interaction, and customizable lighting modes. Set timers for automated lighting.

**Highlights:** Bluetooth 4.0 connectivity, Color selection via camera or photo album, Music synchronized lighting, Microphone acoustic interaction, Timer settings, Static and dynamic mode settings

**Features:** macOS Compatibility

**In-app purchases:** none


### CPU

[App page](https://appshunter.io/ios/app/cpu-g/id6793358304)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ECHO LED free?

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

### Is CPU free?

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

### Do ECHO LED or CPU have ads?

CPU shows ads; ECHO LED does not.

### Which is updated more often, ECHO LED or CPU?

ECHO LED ships an update every 5 weeks, and CPU daily. Most recently, ECHO LED was updated on September 21, 2026 and CPU on October 3, 2026.

---

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