# LETS SIGNAL vs あかちゃんBGM

The clearest difference is in-app purchases: あかちゃんBGM at none against LETS SIGNAL's 1. あかちゃんBGM also leads on ads (none vs shown) and update cadence (every 11 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. LETS SIGNAL sells 1 one-off in-app purchase. あかちゃんBGM asks for nothing beyond the download.

LETS SIGNAL ships an update every 2 months, あかちゃんBGM every 11 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | LETS SIGNAL | あかちゃんBGM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (13 ratings)](https://appshunter.io/ios/app/lets-signal/id1627839408/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 68 MB | 179 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Masao Nakajima](https://appshunter.io/developer/1537219074) | [Horikiri Seiu](https://appshunter.io/developer/1480680977) |

## What reviewers say

### LETS SIGNAL

[App page](https://appshunter.io/ios/app/lets-signal/id1627839408)

Simulate realistic traffic signals and crosswalks from around the world. Customize signal timings and experience different country variations. Upgrade to unlock car traffic lights.

**Highlights:** Realistic crosswalk signal simulation, 7 crosswalk signals from 4 countries, Customizable waiting, lighting, and flashing times, Unlock car traffic lights with premium upgrade, Push button operation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Premium | $3.99 | one-time |


### あかちゃんBGM

[App page](https://appshunter.io/ios/app/bgm/id6468106603)

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

**In-app purchases:** none


## Frequently asked questions

### Is LETS SIGNAL free?

LETS SIGNAL is free to download, with in-app purchases available.

### Is あかちゃんBGM free?

あかちゃんBGM is free to download, with no in-app purchases.

### Do LETS SIGNAL or あかちゃんBGM have ads?

LETS SIGNAL shows ads; あかちゃんBGM does not.

### Which is updated more often, LETS SIGNAL or あかちゃんBGM?

LETS SIGNAL ships an update every 2 months, and あかちゃんBGM every 11 days. Most recently, LETS SIGNAL was updated on November 3, 2026 and あかちゃんBGM on October 30, 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.*