# JS vs YPM

The clearest difference is in-app purchases: JS at none against YPM's 5. YPM's advantage is update cadence (every 4 days vs every 4 weeks) and iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. YPM sells 5 in-app purchases, starting at $4.99 per month. JS asks for nothing beyond the download.

JS ships an update every 4 weeks, YPM every 4 days. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | JS | YPM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Size | 17 MB | 47 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [JS-METALS SP. Z O.O.](https://appshunter.io/developer/1814799225) | [Chun Kin Lau](https://appshunter.io/developer/1474532526) |

## What reviewers say

### JS

[App page](https://appshunter.io/ios/app/js-metals/id6746038055)

**Features:** macOS Compatibility

**In-app purchases:** none


### YPM

[App page](https://appshunter.io/ios/app/ypm/id6749611409)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Subscription - Basic | $4.99 | per month |
| Subscription - Fever | $9.99 | per month |
| Subscription - Master | $19.99 | per month |
| 40 Tokens | $3.99 | one-time |
| 120 Tokens | $8.99 | one-time |


## Frequently asked questions

### Is JS free?

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

### Is YPM free?

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

### Do JS or YPM have ads?

Neither JS nor YPM shows ads.

### Which is updated more often, JS or YPM?

JS ships an update every 4 weeks, and YPM every 4 days. Most recently, JS was updated on September 26, 2026 and YPM on October 1, 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.*