# OTP라커 vs 부산도시철도

The clearest difference is review sentiment: 부산도시철도 at 16% against OTP라커's 5%. 부산도시철도 also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

OTP라커 ships an update fortnightly, 부산도시철도 weekly. Both last shipped on October 27, 2026.

## The numbers

| Metric | OTP라커 | 부산도시철도 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 5.0% of reviews | **16.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Free | Free |
| Size | 29 MB | 1 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TECH'N ROLL Inc.](https://appshunter.io/developer/1809959971) | [부산교통공사](https://appshunter.io/developer/925598136) |

## What reviewers say

### OTP라커

[App page](https://appshunter.io/ios/app/otp/id6444036952)

This app offers a smart locker solution using your smartphone. Forget keys and complicated kiosks; simply scan a QR code, pay the fee within the app, and receive a one-time password to securely store your belongings. It's designed for easy and safe use of shared lockers.

**Highlights:** Smartphone-controlled lockers, QR code scanning for access, In-app payment, Time-based one-time passwords (TOTP), HMAC-based security technology, Patented sales method

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

**In-app purchases:** none


### 부산도시철도

[App page](https://appshunter.io/ios/app/busan-subway/id6451433140)

This app allows users to purchase tickets, manage season passes, and utilize a prepaid payment system for convenient travel on the Busan subway. It also offers bonus tickets and automatic event entry for frequent users.

**Highlights:** Mobile ticket purchasing, MetroPay prepaid card system, Season ticket options (1-day, 3-day, 1-month), Bonus tickets for frequent use, Automatic event entry

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

**In-app purchases:** none


## Frequently asked questions

### Is OTP라커 free?

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

### Is 부산도시철도 free?

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

### Do OTP라커 or 부산도시철도 have ads?

Neither OTP라커 nor 부산도시철도 shows ads.

### Which is updated more often, OTP라커 or 부산도시철도?

OTP라커 ships an update fortnightly, and 부산도시철도 weekly. Most recently, OTP라커 was updated on October 27, 2026 and 부산도시철도 on October 27, 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.*