# Formosanus vs Taipei MRT Transfer Map

The clearest difference is in-app purchases: Taipei MRT Transfer Map at none against Formosanus's 1. Taipei MRT Transfer Map also leads on update cadence (every 4 days vs every 2 months). Formosanus's advantage is ads (none vs shown) and device support (3 vs 1). On price and iOS requirement there is nothing between them.

Both are free to download. Formosanus sells 1 one-off in-app purchase. Taipei MRT Transfer Map asks for nothing beyond the download.

Formosanus ships an update every 2 months, Taipei MRT Transfer Map every 4 days. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Formosanus | Taipei MRT Transfer Map |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 12 MB | 10 MB |
| Requires iOS | **15.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yu Tse Wu](https://appshunter.io/developer/1032252133) | [AN RU YANG](https://appshunter.io/developer/1819486438) |

## What reviewers say

### Formosanus

[App page](https://appshunter.io/ios/app/formosanus/id1056896515)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 百岳 | $0.99 | one-time |


### Taipei MRT Transfer Map

[App page](https://appshunter.io/ios/app/taipei-mrt-transfer-map/id6761324979)

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

**In-app purchases:** none


## Frequently asked questions

### Is Formosanus free?

Formosanus is free to download, with in-app purchases available.

### Is Taipei MRT Transfer Map free?

Taipei MRT Transfer Map is free to download, with no in-app purchases.

### Do Formosanus or Taipei MRT Transfer Map have ads?

Taipei MRT Transfer Map shows ads; Formosanus does not.

### Which is updated more often, Formosanus or Taipei MRT Transfer Map?

Formosanus ships an update every 2 months, and Taipei MRT Transfer Map every 4 days. Most recently, Formosanus was updated on October 9, 2026 and Taipei MRT Transfer Map on October 24, 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.*