# SRT vs i.M(아이.엠)

The clearest difference is review sentiment: i.M(아이.엠) at 91% against SRT's 24%. i.M(아이.엠) also leads on rating (4.9 vs 1.3) and ratings volume (1.1K vs 76). SRT's advantage is iOS requirement (9.0 vs 13.0). 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.

i.M(아이.엠) holds the better App Store score, 4.9 against 1.3. That said, the two scores are not equally well evidenced: i.M(아이.엠) has 1.1K ratings behind it against 76, so its average is the more settled of the two. Written reviews point the same way: 24% of SRT's written reviews are positive against 91% of i.M(아이.엠)'s.

SRT ships an update every 2 months, i.M(아이.엠) every 3 weeks. The most recent releases landed on September 22, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | SRT | i.M(아이.엠) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (76 ratings)](https://appshunter.io/ios/app/srt/id1350286957/reviews) | **[4.9 (1.1K ratings)](https://appshunter.io/ios/app/im/id1542967200/reviews)** |
| Number of ratings | 76 | **1.1K** |
| Positive reviews | 23.8% of reviews | **91.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 43 MB | 62 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [(주)에스알](https://appshunter.io/developer/1159201176) | [진모빌리티](https://appshunter.io/developer/1542967202) |

## 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


### i.M(아이.엠)

[App page](https://appshunter.io/ios/app/im/id1542967200)

This mobility service offers premium Carnival taxi rides and data-driven designated driver services. Enjoy spacious and comfortable rides in various Carnival models, with features like air purification and automatic doors. Book rides easily with smart pricing and premium drivers.

**Highlights:** Premium Carnival taxi service, Spacious 11-seater and 6-seater options, Air purification and sanitization, Automatic sliding doors, Data-driven designated driver service, Smart pricing and quick dispatch, AI-based route optimization

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Friendly and helpful drivers
- 🚗 Comfortable and clean vehicles
- 🛂 No forced driver acceptance or refusal
- 💳 Reasonable pricing compared to regular taxis

**What reviewers complain about**

- 🕰️ Longer wait times for pickup
- 🗺️ Inaccurate navigation and location tracking
- 🔇 Lack of explanation for premium pricing over regular taxis

**Reported bugs**

- App interface bugs causing incorrect pickup location pinning
- Inconsistent driver behavior (e.g. ignoring calls, driving recklessly)

**Requested features**

- Expand service coverage to more areas
- Improve real-time tracking and ETA accuracy
- Provide more details on pricing differences between regular and premium services


## Frequently asked questions

### Is SRT free?

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

### Is i.M(아이.엠) free?

i.M(아이.엠) is free to download, with no in-app purchases.

### Which has better reviews, SRT or i.M(아이.엠)?

i.M(아이.엠) is rated higher. SRT averages 1.3 out of 5 from 76 ratings, while i.M(아이.엠) averages 4.9 from 1.1K ratings.

### Do SRT or i.M(아이.엠) have ads?

Neither SRT nor i.M(아이.엠) shows ads.

### Which is updated more often, SRT or i.M(아이.엠)?

SRT ships an update every 2 months, and i.M(아이.엠) every 3 weeks. Most recently, SRT was updated on September 22, 2026 and i.M(아이.엠) on September 25, 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.*