# 陣痛タイマー by ぴよログ vs Sipling

The clearest difference is update cadence: Sipling at every 3 days against 陣痛タイマー by ぴよログ's every 3 weeks. 陣痛タイマー by ぴよログ's advantage is iOS requirement (16.0 vs 26.5). 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.

陣痛タイマー by ぴよログ ships an update every 3 weeks, Sipling every 3 days. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 陣痛タイマー by ぴよログ | Sipling |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 84.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Ad-supported | — |
| Size | 23 MB | 2 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [TAIJU ISOBE](https://appshunter.io/developer/6797078036) |

## What reviewers say

### 陣痛タイマー by ぴよログ

[App page](https://appshunter.io/ios/app/by/id1486291787)

This app helps expectant mothers easily track labor contractions by simply tapping buttons. It records duration and intervals, allowing for seamless sharing of real-time updates with partners and family. Prepare for childbirth with this user-friendly tool.

**Highlights:** Contraction timer and interval counter, One-tap recording of contractions, Real-time sharing with family, Push notifications for contraction start, History log with editing capabilities, Easy-to-understand interface

**In-app purchases:** none


### Sipling

[App page](https://appshunter.io/ios/app/sipling-water-and-drinks/id6797078034)

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

**In-app purchases:** none


## Frequently asked questions

### Is 陣痛タイマー by ぴよログ free?

陣痛タイマー by ぴよログ is free to download, with no in-app purchases.

### Is Sipling free?

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

### Do 陣痛タイマー by ぴよログ or Sipling have ads?

Neither 陣痛タイマー by ぴよログ nor Sipling shows ads.

### Which is updated more often, 陣痛タイマー by ぴよログ or Sipling?

陣痛タイマー by ぴよログ ships an update every 3 weeks, and Sipling every 3 days. Most recently, 陣痛タイマー by ぴよログ was updated on October 25, 2026 and Sipling on October 8, 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.*