# 陣痛タイマー by ぴよログ vs Diet Autopilot

The clearest difference is in-app purchases: 陣痛タイマー by ぴよログ at none against Diet Autopilot's 6. 陣痛タイマー by ぴよログ also leads on ads (none vs shown). Diet Autopilot's advantage is update cadence (every 2 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Diet Autopilot sells 3 in-app purchases, starting at $1.99 per month. 陣痛タイマー by ぴよログ asks for nothing beyond the download.

陣痛タイマー by ぴよログ ships an update every 3 weeks, Diet Autopilot every 2 days. Both last shipped on September 22, 2026.

## The numbers

| Metric | 陣痛タイマー by ぴよログ | Diet Autopilot |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 84.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Ad-supported | — |
| Size | 21 MB | 238 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PiyoLog Inc.](https://appshunter.io/developer/440099912) | [katapu.net](https://appshunter.io/developer/381898924) |

## 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


### Diet Autopilot

[App page](https://appshunter.io/ios/app/diet-autopilot/id6780191401)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diet Autopilot Monthly | $1.99 | per month |
| Diet Autopilot 6 Months | $9.99 | per 6 months |
| Diet Autopilot Annual | $17.99 | per year |


## 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 Diet Autopilot free?

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

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

Diet Autopilot shows ads; 陣痛タイマー by ぴよログ does not.

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

陣痛タイマー by ぴよログ ships an update every 3 weeks, and Diet Autopilot every 2 days. Most recently, 陣痛タイマー by ぴよログ was updated on September 22, 2026 and Diet Autopilot on September 22, 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.*