# Simple Sleep Timer for Babies vs 西游计

The clearest difference is update cadence: 西游计 at every 2 weeks against Simple Sleep Timer for Babies's every 6 months. 西游计 also leads on price ($1.99 vs $4.99) and iOS requirement (15.0 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Simple Sleep Timer for Babies costs $4.99 and 西游计 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Simple Sleep Timer for Babies ships an update every 6 months, 西游计 every 2 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Simple Sleep Timer for Babies | 西游计 |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 weeks** |
| Size | 2 MB | 60 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Talkabout Design LLC](https://appshunter.io/developer/913695621) | [多 李](https://appshunter.io/developer/1869177003) |

## What reviewers say

### Simple Sleep Timer for Babies

[App page](https://appshunter.io/ios/app/simple-sleep-timer-for-babies/id1479923124)

**Features:** Apple Watch app

**In-app purchases:** none


### 西游计

[App page](https://appshunter.io/ios/app/walkvest/id6758365300)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Simple Sleep Timer for Babies free?

Simple Sleep Timer for Babies costs $4.99, with no in-app purchases.

### Is 西游计 free?

西游计 costs $1.99, with no in-app purchases.

### Do Simple Sleep Timer for Babies or 西游计 have ads?

Neither Simple Sleep Timer for Babies nor 西游计 shows ads.

### Which is updated more often, Simple Sleep Timer for Babies or 西游计?

Simple Sleep Timer for Babies ships an update every 6 months, and 西游计 every 2 weeks. Most recently, Simple Sleep Timer for Babies was updated on October 26, 2026 and 西游计 on October 24, 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.*