# 孕婦小知識2 vs Pet Diary

The clearest difference is in-app purchases: 孕婦小知識2 at none against Pet Diary's 9. 孕婦小知識2 also leads on ads (none vs shown) and iOS requirement (9.0 vs 12.0). Pet Diary's advantage is update cadence (every 3 weeks vs every 20 months). On price and device support there is nothing between them.

Both are free to download. Pet Diary sells 9 one-off in-app purchases. 孕婦小知識2 asks for nothing beyond the download.

孕婦小知識2 ships an update every 20 months, Pet Diary every 3 weeks. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 孕婦小知識2 | Pet Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (5 ratings)](https://appshunter.io/ios/app/pet-diary-record-pets-life/id1599108594/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 52.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 111 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Siu Wo Kwok](https://appshunter.io/developer/1048872360) | [Shenzhen XiyouDiary Network Technology Co., Ltd](https://appshunter.io/developer/1555279709) |

## What reviewers say

### 孕婦小知識2

[App page](https://appshunter.io/ios/app/2/id1127683778)

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

**In-app purchases:** none


### Pet Diary

[App page](https://appshunter.io/ios/app/pet-diary-record-pets-life/id1599108594)

Track your pet's health, finances, and daily activities with this comprehensive diary app. Record medical history, manage expenses, create custom recipes, and monitor vital signs. Supports multiple pets and collaborative sharing.

**Highlights:** Pet health and vital sign tracking, Pet accounting and expense management, Customizable pet recipes and food taboos, Item expiration date reminders, Daily record keeping (vaccines, medical, notes), Weight and body measurement charting, Shared accounts for collaborative pet care

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Give an ice cream | $3.00 | one-time |
| 1-month membership | $5.00 | one-time |
| 3-month membership | $8.00 | one-time |
| Give a cup of coffee | $8.00 | one-time |
| 6-month membership | $12.00 | one-time |
| 12-month membership | $19.00 | one-time |
| life member | $29.00 | one-time |
| life member | $59.00 | one-time |
| Give a big meal | $88.00 | one-time |


## Frequently asked questions

### Is 孕婦小知識2 free?

孕婦小知識2 is free to download, with no in-app purchases.

### Is Pet Diary free?

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

### Do 孕婦小知識2 or Pet Diary have ads?

Pet Diary shows ads; 孕婦小知識2 does not.

### Which is updated more often, 孕婦小知識2 or Pet Diary?

孕婦小知識2 ships an update every 20 months, and Pet Diary every 3 weeks. Most recently, 孕婦小知識2 was updated on November 2, 2026 and Pet Diary on November 3, 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.*