# Trigger Locker(業務用トリガーロッカー) vs Japan

The clearest difference is in-app purchases: Trigger Locker(業務用トリガーロッカー) at none against Japan's 1. Trigger Locker(業務用トリガーロッカー) also leads on ads (none vs shown). Japan's advantage is update cadence (weekly vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Japan sells 1 one-off in-app purchase. Trigger Locker(業務用トリガーロッカー) asks for nothing beyond the download.

Trigger Locker(業務用トリガーロッカー) ships an update every 6 weeks, Japan weekly. The most recent releases landed on August 23, 2026 and July 18, 2026 respectively.

## The numbers

| Metric | Trigger Locker(業務用トリガーロッカー) | Japan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (16 ratings)](https://appshunter.io/ios/app/japan-us-unit-conversion/id6450624167/reviews)** |
| Number of ratings | — | **16** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | — | Free with in-app purchases |
| Size | 18 MB | 18 MB |
| Requires iOS | **15.6** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SPACER Co., Ltd.](https://appshunter.io/developer/1052521521) | [Koya Nambo](https://appshunter.io/developer/1633778504) |

## What reviewers say

### Trigger Locker(業務用トリガーロッカー)

[App page](https://appshunter.io/ios/app/trigger-locker/id1436581792)

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

**In-app purchases:** none


### Japan

[App page](https://appshunter.io/ios/app/japan-us-unit-conversion/id6450624167)

Easily convert between Japanese and US units for length, weight, speed, volume, temperature, area, currency, and time zones. This tool is useful for travel, daily life, work, and study, offering a wide range of conversion categories.

**Highlights:** Length conversion, Weight conversion, Speed conversion, Volume conversion, Temperature conversion, Area conversion, Currency conversion, Timezone conversion

**Features:** macOS Compatibility

**In-app purchases (1)**

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


## Frequently asked questions

### Is Trigger Locker(業務用トリガーロッカー) free?

Trigger Locker(業務用トリガーロッカー) is free to download, with no in-app purchases.

### Is Japan free?

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

### Do Trigger Locker(業務用トリガーロッカー) or Japan have ads?

Japan shows ads; Trigger Locker(業務用トリガーロッカー) does not.

### Which is updated more often, Trigger Locker(業務用トリガーロッカー) or Japan?

Trigger Locker(業務用トリガーロッカー) ships an update every 6 weeks, and Japan weekly. Most recently, Trigger Locker(業務用トリガーロッカー) was updated on August 23, 2026 and Japan on July 18, 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.*