# 研發替代役 vs GRNTRX

The clearest difference is device support: 研發替代役 at 3 against GRNTRX's 1. 研發替代役 also leads on iOS requirement (11.0 vs 16.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

研發替代役 ships an update every 4 months, GRNTRX every 2 months. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 研發替代役 | GRNTRX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 13.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 45 MB | 60 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [National Conscription Agency, Ministry of the Interior](https://appshunter.io/developer/1544027515) | [鴻太科技股份有限公司](https://appshunter.io/developer/1867646758) |

## What reviewers say

### 研發替代役

[App page](https://appshunter.io/ios/app/id1544027513)

**Features:** macOS Compatibility

**In-app purchases:** none


### GRNTRX

[App page](https://appshunter.io/ios/app/grntrx/id6757570093)

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

**In-app purchases:** none


## Frequently asked questions

### Is 研發替代役 free?

研發替代役 is free to download, with no in-app purchases.

### Is GRNTRX free?

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

### Do 研發替代役 or GRNTRX have ads?

Neither 研發替代役 nor GRNTRX shows ads.

### Which is updated more often, 研發替代役 or GRNTRX?

研發替代役 ships an update every 4 months, and GRNTRX every 2 months. Most recently, 研發替代役 was updated on November 3, 2026 and GRNTRX on October 31, 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.*