# Juliet vs 化学マスター

The clearest difference is in-app purchases: Juliet at none against 化学マスター's 1. Juliet also leads on iOS requirement (15.6 vs 18.0). 化学マスター's advantage is update cadence (every 5 days vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. 化学マスター sells 1 one-off in-app purchase. Juliet asks for nothing beyond the download.

Juliet ships an update every 5 months, 化学マスター every 5 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Juliet | 化学マスター |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 30.8% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 26 MB | 37 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Tokyo College of Music](https://appshunter.io/developer/1456356957) | [ryo otsuka](https://appshunter.io/developer/6788628020) |

## What reviewers say

### Juliet

[App page](https://appshunter.io/ios/app/juliet/id1456356958)

This application allows users to unlock and lock doors at the TCM Nakameguro and Daikanyama campuses. It provides a list of lockable locations and enables password changes for app access. Note that hallways and practice rooms are automatically locked.

**Highlights:** Unlock/lock campus doors, View lockable locations, Change app login password, Automatic hallway/practice room locking

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

**In-app purchases:** none


### 化学マスター

[App page](https://appshunter.io/ios/app/id6788745347)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 化学マスター Pro | $2.99 | one-time |


## Frequently asked questions

### Is Juliet free?

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

### Is 化学マスター free?

化学マスター is free to download, with in-app purchases available.

### Do Juliet or 化学マスター have ads?

Neither Juliet nor 化学マスター shows ads.

### Which is updated more often, Juliet or 化学マスター?

Juliet ships an update every 5 months, and 化学マスター every 5 days. Most recently, Juliet was updated on November 2, 2026 and 化学マスター on November 5, 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.*