# 海棠万年历 vs DuLabs

The clearest difference is update cadence: DuLabs at every 9 days against 海棠万年历's monthly. 海棠万年历's advantage is iOS requirement (12.0 vs 16.0). 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.

海棠万年历 ships an update monthly, DuLabs every 9 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 海棠万年历 | DuLabs |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Size | 74 MB | 2 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Haitang Chushang Technology Co., Ltd.](https://appshunter.io/developer/1745623834) | [彤 姚](https://appshunter.io/developer/1895435197) |

## What reviewers say

### 海棠万年历

[App page](https://appshunter.io/ios/app/id1619867793)

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

**In-app purchases:** none


### DuLabs

[App page](https://appshunter.io/ios/app/dulabs/id6777095514)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 海棠万年历 free?

海棠万年历 is free to download, with no in-app purchases.

### Is DuLabs free?

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

### Do 海棠万年历 or DuLabs have ads?

Neither 海棠万年历 nor DuLabs shows ads.

### Which is updated more often, 海棠万年历 or DuLabs?

海棠万年历 ships an update monthly, and DuLabs every 9 days. Most recently, 海棠万年历 was updated on October 25, 2026 and DuLabs on October 28, 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.*