# dtac OneCall vs M VMS

The clearest difference is update cadence: M VMS at weekly against dtac OneCall's every 13 months. On price, ads, in-app purchases and device support 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 ships an update every 13 months, M VMS weekly. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | dtac OneCall | M VMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dtac-onecall/id1525846336/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Weekly** |
| Monetization | Free | — |
| Size | 215 MB | 78 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TRUE CORPORATION PUBLIC COMPANY LIMITED](https://appshunter.io/developer/447041660) | [Nauticomm Company Limited](https://appshunter.io/developer/1367318109) |

## 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


### M VMS

[App page](https://appshunter.io/ios/app/m-vms/id1607228518)

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

**In-app purchases:** none


## Frequently asked questions

### Is dtac OneCall free?

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

### Is M VMS free?

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

### Do dtac OneCall or M VMS have ads?

Neither dtac OneCall nor M VMS shows ads.

### Which is updated more often, dtac OneCall or M VMS?

dtac OneCall ships an update every 13 months, and M VMS weekly. Most recently, dtac OneCall was updated on October 24, 2026 and M VMS on October 8, 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.*