# Japanese Traffic Lights vs PrimeFactorizationGame

The clearest difference is update cadence: PrimeFactorizationGame at monthly against Japanese Traffic Lights's every 3 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.

Japanese Traffic Lights ships an update every 3 months, PrimeFactorizationGame monthly. The most recent releases landed on October 9, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Japanese Traffic Lights | PrimeFactorizationGame |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 54 MB | 7 MB |
| Requires iOS | **17** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Yosuke Ando](https://appshunter.io/developer/1790867336) | [TomatoAppLab](https://appshunter.io/developer/1676711750) |

## What reviewers say

### Japanese Traffic Lights

[App page](https://appshunter.io/ios/app/japanese-traffic-lights/id6743442524)

This app simulates Japanese traffic lights for vehicles and pedestrians, offering both LED and incandescent types. Users can customize lighting cycles, control signals manually, and even link two devices via Bluetooth for interactive play or learning.

**Highlights:** Vehicle traffic light simulation (LED/incandescent), Pedestrian traffic light simulation (LED/incandescent), Customizable lighting cycles, Manual signal control, Bluetooth multiplayer control, Flashing yellow/red light support

**Features:** macOS Compatibility

**In-app purchases:** none


### PrimeFactorizationGame

[App page](https://appshunter.io/ios/app/primefactorizationgame/id6755812213)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Japanese Traffic Lights free?

Japanese Traffic Lights is free to download, with no in-app purchases.

### Is PrimeFactorizationGame free?

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

### Do Japanese Traffic Lights or PrimeFactorizationGame have ads?

Both Japanese Traffic Lights and PrimeFactorizationGame show ads.

### Which is updated more often, Japanese Traffic Lights or PrimeFactorizationGame?

Japanese Traffic Lights ships an update every 3 months, and PrimeFactorizationGame monthly. Most recently, Japanese Traffic Lights was updated on October 9, 2026 and PrimeFactorizationGame on October 14, 2026.

---

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