Japanese Traffic Lights vs ○× Buzzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Japanese Traffic Lights
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.
- 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
Read full descriptionHide full description
"Japanese Traffic Light Simulator T1" is an application that simulates and displays Japanese traffic lights for vehicles and pedestrians on smartphones. Use it for play or learning. For Vehicles: Includes both LED and incandescent types. Simulates basic 3-light signals (blue, yellow, red) and arrow signals (for general vehicles and trams). The lighting cycle can be changed by setting the number of seconds, or manually at any time. Supports flashing yellow and red lights as well. For Pedestrians: Includes both LED and incandescent types. The lighting cycle can also be changed by setting or manually. Traffic lights control can be performed between two smartphones via Bluetooth® communication. The app cannot be used as an actual traffic light.
○× Buzzer
This app provides a simple interface to display correct "○" or incorrect "×" symbols with distinct sounds. It offers Apple Watch control for added convenience.
- Displays correct "○" symbol
- Displays incorrect "×" symbol
- Plays distinct sounds for each symbol
- Apple Watch control
- Simple user interface
Read full descriptionHide full description
"○× Buzzer" is an app that displays a correct "○" and makes a "ping pong" sound, and displays an incorrect "×" and makes a "beep" sound. It can also be controlled using your Apple Watch.
Screenshots
Verdict
The clearest difference is update cadence: ○× Buzzer at weekly against Japanese Traffic Lights's every 3 months. ○× Buzzer also leads on device support (4 vs 1) and iOS requirement (14.0 vs 17). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, ○× Buzzer weekly. The most recent releases landed on October 9, 2026 and October 28, 2026 respectively.
| Parameter | Japanese Traffic Lights | ○× Buzzer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 17 | 14.0 — better |
| Further details — not scored | ||
| Size | 54 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Yosuke Ando | Legal Prompt Inc. |
In-app purchases
Japanese Traffic Lights
No in-app purchases
○× Buzzer
No in-app purchases
Questions
Is Japanese Traffic Lights free?
Is ○× Buzzer free?
Do Japanese Traffic Lights or ○× Buzzer have ads?
Which is updated more often, Japanese Traffic Lights or ○× Buzzer?
Other comparisons
