# D vs 自由客紧固件

The clearest difference is update cadence: 自由客紧固件 at every 2 weeks against D's every 6 weeks. 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.

D ships an update every 6 weeks, 自由客紧固件 every 2 weeks. The most recent releases landed on September 18, 2026 and May 13, 2026 respectively.

## The numbers

| Metric | D | 自由客紧固件 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 2 weeks** |
| Size | 32 MB | 80 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Shenzhen DiscoveryOpt Technology Co., Ltd.](https://appshunter.io/developer/1822511782) | [帅 吕](https://appshunter.io/developer/1734033738) |

## What reviewers say

### D

[App page](https://appshunter.io/ios/app/d-ballistics/id6479838876)

**Features:** macOS Compatibility

**In-app purchases:** none


### 自由客紧固件

[App page](https://appshunter.io/ios/app/id6496204251)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is D free?

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

### Is 自由客紧固件 free?

自由客紧固件 is free to download, with no in-app purchases.

### Do D or 自由客紧固件 have ads?

Neither D nor 自由客紧固件 shows ads.

### Which is updated more often, D or 自由客紧固件?

D ships an update every 6 weeks, and 自由客紧固件 every 2 weeks. Most recently, D was updated on September 18, 2026 and 自由客紧固件 on May 13, 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.*