# Taiwan Datum vs Mobile AI

The clearest difference is price: Mobile AI at Free against Taiwan Datum's $1.99. Taiwan Datum's advantage is update cadence (every 2 months vs every 13 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Mobile AI is free to download; Taiwan Datum costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Taiwan Datum ships an update every 2 months, Mobile AI every 13 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Taiwan Datum | Mobile AI |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | Paid | — |
| Size | 3 MB | 165 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HUNG HSUN LIN](https://appshunter.io/developer/482586427) | [C-LINK TECHNOLOGY INC.](https://appshunter.io/developer/824706875) |

## What reviewers say

### Taiwan Datum

[App page](https://appshunter.io/ios/app/taiwan-datum/id620301625)

This app measures coordinates in Taiwan using WGS84, TWD97, and TWD67 systems. It allows users to export data as CSV and attach photos, videos, and voice recordings to measurements.

**Highlights:** WGS84, TWD97, TWD67 coordinate systems, CSV data export, Attach photos, Attach videos, Attach voice records, Download media via iTunes

**Features:** Vision Pro support

**In-app purchases:** none


### Mobile AI

[App page](https://appshunter.io/ios/app/mobile-ai-ems/id1564701639)

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

**In-app purchases:** none


## Frequently asked questions

### Is Taiwan Datum free?

Taiwan Datum costs $1.99, with no in-app purchases.

### Is Mobile AI free?

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

### Do Taiwan Datum or Mobile AI have ads?

Neither Taiwan Datum nor Mobile AI shows ads.

### Which is updated more often, Taiwan Datum or Mobile AI?

Taiwan Datum ships an update every 2 months, and Mobile AI every 13 months. Most recently, Taiwan Datum was updated on October 23, 2026 and Mobile AI on October 7, 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.*