# 古着屋JAM公式アプリ vs OPT!M

The clearest difference is update cadence: OPT!M at monthly against 古着屋JAM公式アプリ's every 6 months. OPT!M also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). 古着屋JAM公式アプリ's advantage is review sentiment (62% vs 50%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

古着屋JAM公式アプリ ships an update every 6 months, OPT!M monthly. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | 古着屋JAM公式アプリ | OPT!M |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **61.5% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | Free | Free |
| Size | 40 MB | 74 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [株式会社JAM TRADING](https://appshunter.io/developer/1483755466) | [saiteki inc.](https://appshunter.io/developer/1435064547) |

## What reviewers say

### 古着屋JAM公式アプリ

[App page](https://appshunter.io/ios/app/jam/id1483757070)

This app is the official application for a vintage clothing store. It allows users to earn and use points across all store brands, access favorite items and staff recommendations, and receive exclusive content and coupons. Members also receive special benefits based on their purchase history.

**Highlights:** Cardless membership card, Earn and use points across all brands, View favorite items and purchase history, Access staff coordinates and articles, Receive coupons and point-up information, Member rank benefits

**In-app purchases:** none


### OPT!M

[App page](https://appshunter.io/ios/app/optm/id6446169716)

Create an order list for desired products within a specific area. Generate a QR code from your list to easily place orders at the sales counter. Streamline your shopping experience by pre-selecting items and completing purchases with a simple scan.

**Highlights:** Create product order lists, Generate QR codes for orders, Easy order placement at sales counters, Select desired products, Streamlined purchase process

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

**In-app purchases:** none


## Frequently asked questions

### Is 古着屋JAM公式アプリ free?

古着屋JAM公式アプリ is free to download, with no in-app purchases.

### Is OPT!M free?

OPT!M is free to download, with no in-app purchases.

### Do 古着屋JAM公式アプリ or OPT!M have ads?

Neither 古着屋JAM公式アプリ nor OPT!M shows ads.

### Which is updated more often, 古着屋JAM公式アプリ or OPT!M?

古着屋JAM公式アプリ ships an update every 6 months, and OPT!M monthly. Most recently, 古着屋JAM公式アプリ was updated on September 17, 2026 and OPT!M on September 15, 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.*