# HDM vs 直CALL台

The clearest difference is update cadence: 直CALL台 at every 6 weeks against HDM's every 5 months. 直CALL台 also leads on iOS requirement (15.6 vs 17.0). 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.

HDM ships an update every 5 months, 直CALL台 every 6 weeks. The most recent releases landed on August 9, 2026 and June 22, 2026 respectively.

## The numbers

| Metric | HDM | 直CALL台 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/call/id1347095376/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | — | Free |
| Size | 34 MB | 11 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Index Information Technology Limited Taiwan Branch](https://appshunter.io/developer/521650122) | [HK Taxi](https://appshunter.io/developer/1343807182) |

## What reviewers say

### HDM

[App page](https://appshunter.io/ios/app/hdm/id1077222414)

**In-app purchases:** none


### 直CALL台

[App page](https://appshunter.io/ios/app/call/id1347095376)

This app connects taxi drivers with passengers through an optimized service. It acts as an intermediary to facilitate legitimate transactions between users.

**Highlights:** Taxi booking service, Driver-passenger connection, Optimized ride planning, Facilitates legitimate transactions, Mobile app accessibility

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

**In-app purchases:** none


## Frequently asked questions

### Is HDM free?

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

### Is 直CALL台 free?

直CALL台 is free to download, with no in-app purchases.

### Do HDM or 直CALL台 have ads?

Neither HDM nor 直CALL台 shows ads.

### Which is updated more often, HDM or 直CALL台?

HDM ships an update every 5 months, and 直CALL台 every 6 weeks. Most recently, HDM was updated on August 9, 2026 and 直CALL台 on June 22, 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.*