# SRT vs OTP라커

The clearest difference is update cadence: OTP라커 at fortnightly against SRT's every 2 months. SRT's advantage is review sentiment (24% vs 5%) and iOS requirement (9.0 vs 16.6). 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.

SRT ships an update every 2 months, OTP라커 fortnightly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | SRT | OTP라커 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.3 (76 ratings)](https://appshunter.io/ios/app/srt/id1350286957/reviews)** | — |
| Number of ratings | **76** | — |
| Positive reviews | **23.8% of reviews** | 5.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 43 MB | 29 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [(주)에스알](https://appshunter.io/developer/1159201176) | [TECH'N ROLL Inc.](https://appshunter.io/developer/1809959971) |

## What reviewers say

### SRT

[App page](https://appshunter.io/ios/app/srt/id1350286957)

Book and purchase tickets for the Suseo High-Speed Railway (SRT). Enjoy 10% cheaper fares, 10 minutes faster travel, and a unique experience. Easily manage your tickets, including reservations, payments, and transfers.

**Highlights:** Ticket reservation and purchase, Check train schedules and availability, View and manage purchased tickets, Transfer tickets to other users, Map-based station selection, Automatic ticket notifications, Crew call service

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is SRT free?

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

### Is OTP라커 free?

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

### Do SRT or OTP라커 have ads?

Neither SRT nor OTP라커 shows ads.

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

SRT ships an update every 2 months, and OTP라커 fortnightly. Most recently, SRT was updated on September 22, 2026 and OTP라커 on September 21, 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.*