# 生日倒计时 vs PureDose

The clearest difference is in-app purchases: 生日倒计时 at none against PureDose's 1. 生日倒计时 also leads on device support (3 vs 1) and iOS requirement (14.0 vs 18.5). On price, update cadence and ads there is nothing between them.

Both are free to download. PureDose sells 1 one-off in-app purchase. 生日倒计时 asks for nothing beyond the download.

生日倒计时 ships an update every 5 weeks, PureDose every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 生日倒计时 | PureDose |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 24 MB | 7 MB |
| Requires iOS | **14.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Shaanxi Guangpuman Technology Co., Ltd](https://appshunter.io/developer/1592787406) | [春建 王](https://appshunter.io/developer/1893808279) |

## What reviewers say

### 生日倒计时

[App page](https://appshunter.io/ios/app/id1592787404)

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

**In-app purchases:** none


### PureDose

[App page](https://appshunter.io/ios/app/puredose/id6790829334)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buyout Unlock | $4.99 | one-time |


## Frequently asked questions

### Is 生日倒计时 free?

生日倒计时 is free to download, with no in-app purchases.

### Is PureDose free?

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

### Do 生日倒计时 or PureDose have ads?

Neither 生日倒计时 nor PureDose shows ads.

### Which is updated more often, 生日倒计时 or PureDose?

生日倒计时 ships an update every 5 weeks, and PureDose every 3 weeks. Most recently, 生日倒计时 was updated on November 3, 2026 and PureDose on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*