# dtac OneCall vs SRT D

The clearest difference is rating: dtac OneCall at 5.0 against SRT D's 1.4. SRT D's advantage is update cadence (every 5 weeks vs every 13 months) and ratings volume (17 vs 1). 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.

dtac OneCall holds the better App Store score, 5.0 against 1.4. That said, the two scores are not equally well evidenced: SRT D has 17 ratings behind it against 1, so its average is the more settled of the two.

dtac OneCall ships an update every 13 months, SRT D every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | dtac OneCall | SRT D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dtac-onecall/id1525846336/reviews)** | [1.4 (17 ratings)](https://appshunter.io/ios/app/srt-d-ticket/id1560080111/reviews) |
| Number of ratings | 1 | **17** |
| Positive reviews | — | 10.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 215 MB | 20 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TRUE CORPORATION PUBLIC COMPANY LIMITED](https://appshunter.io/developer/447041660) | [State Railway of Thailand](https://appshunter.io/developer/1552834357) |

## What reviewers say

### dtac OneCall

[App page](https://appshunter.io/ios/app/dtac-onecall/id1525846336)

This cloud-based phone service transforms your devices into a virtual business PBX. It allows you to stay connected for business communications from anywhere, on any device.

**Highlights:** Cloud-based phone service, Virtual business PBX, Mobile and desktop integration, Stay connected anywhere, Full business communication features

**Features:** macOS Compatibility, Siri integration

**In-app purchases:** none


### SRT D

[App page](https://appshunter.io/ios/app/srt-d-ticket/id1560080111)

This official application allows users to book train tickets for the State Railway of Thailand. It serves as a convenient platform for managing your railway travel.

**Highlights:** Official train ticket booking, State Railway of Thailand, Manage railway travel

**In-app purchases:** none

**What reviewers like**

- ✅ Easy registration process
- 📱 Clean and intuitive user interface
- 🎫 Convenient e-ticket display for boarding
- 💳 Support for foreign credit cards
- 🚀 Fast ticket booking when system works

**What reviewers complain about**

- 🐛 Login failures after registration
- 🐛 Persistent 'no data' search results
- 🐛 Email verification not sent during signup
- 🐛 Password reset emails not received
- 🐛 Seat selection mismatches with actual seats

**Reported bugs**

- Login credentials rejected despite correct entry
- Email verification link not functional
- Password reset emails not delivered
- App crashes when entering passport information
- Seats marked as occupied after failed booking attempts

**Requested features**

- Swap origin/destination button for easy comparison
- Remember recent travel searches
- Direct email integration for account recovery
- Gender option for monks/religious persons
- Sync bookings between app and website


## Frequently asked questions

### Is dtac OneCall free?

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

### Is SRT D free?

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

### Which has better reviews, dtac OneCall or SRT D?

dtac OneCall is rated higher. dtac OneCall averages 5.0 out of 5 from 1 ratings, while SRT D averages 1.4 from 17 ratings.

### Do dtac OneCall or SRT D have ads?

Neither dtac OneCall nor SRT D shows ads.

### Which is updated more often, dtac OneCall or SRT D?

dtac OneCall ships an update every 13 months, and SRT D every 5 weeks. Most recently, dtac OneCall was updated on November 3, 2026 and SRT D on November 3, 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.*