# 桐学汇 vs RDWelder

The clearest difference is update cadence: 桐学汇 at every 4 days against RDWelder'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.

桐学汇 ships an update every 4 days, RDWelder every 6 weeks. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 桐学汇 | RDWelder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 weeks |
| Size | 28 MB | 133 MB |
| Requires iOS | **12.0** | 13 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [深圳市创鑫激光股份有限公司](https://appshunter.io/developer/1740050494) | [深圳市睿达科技有限公司](https://appshunter.io/developer/1188607581) |

## What reviewers say

### 桐学汇

[App page](https://appshunter.io/ios/app/id6737542820)

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

**In-app purchases:** none


### RDWelder

[App page](https://appshunter.io/ios/app/rdwelder/id6738367984)

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

**In-app purchases:** none


## Frequently asked questions

### Is 桐学汇 free?

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

### Is RDWelder free?

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

### Do 桐学汇 or RDWelder have ads?

Neither 桐学汇 nor RDWelder shows ads.

### Which is updated more often, 桐学汇 or RDWelder?

桐学汇 ships an update every 4 days, and RDWelder every 6 weeks. Most recently, 桐学汇 was updated on October 24, 2026 and RDWelder on October 27, 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.*