# Fourth Trimester vs Sibyl Care

The clearest difference is update cadence: Fourth Trimester at every 3 days against Sibyl Care's every 6 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Fourth Trimester sells 3 in-app purchases, starting at $9.99 per month and Sibyl Care sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Fourth Trimester ships an update every 3 days, Sibyl Care every 6 weeks. The most recent releases landed on October 10, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Fourth Trimester | Sibyl Care |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fourth-trimester/id6764419781/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 weeks |
| Monetization | Freemium | — |
| Size | 58 MB | 23 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Peyton Kettler](https://appshunter.io/developer/1895772205) | [Sibyl](https://appshunter.io/developer/1895925514) |

## What reviewers say

### Fourth Trimester

[App page](https://appshunter.io/ios/app/fourth-trimester/id6764419781)

This app provides comprehensive postpartum support for new mothers, offering tracking for baby and mom's well-being, expert-curated educational content, AI-powered guidance, and a supportive community. It aims to make the postpartum journey feel less overwhelming and more connected.

**Highlights:** Baby and Mom tracking (feeding, sleep, mood), Postpartum recovery and symptom logging, Expert-reviewed newborn and postpartum education, AI-powered Mama Coach for guidance, Community support with other mothers, Milestone tracking up to 24 months

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fourth Trimester Premium | $9.99 | per month |
| Fourth Trimester Pass | $24.99 | per 3 months |
| Fourth Trimester Premium | $79.99 | per year |


### Sibyl Care

[App page](https://appshunter.io/ios/app/sibyl-care/id6787125952)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sibyl Monthly | $9.99 | per month |
| Sibyl 3-Month | $23.99 | per 3 months |
| Sibyl 6-Month | $41.99 | per 6 months |
| Sibyl Lifetime Access | $99.99 | one-time |


## Frequently asked questions

### Is Fourth Trimester free?

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

### Is Sibyl Care free?

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

### Do Fourth Trimester or Sibyl Care have ads?

Neither Fourth Trimester nor Sibyl Care shows ads.

### Which is updated more often, Fourth Trimester or Sibyl Care?

Fourth Trimester ships an update every 3 days, and Sibyl Care every 6 weeks. Most recently, Fourth Trimester was updated on October 10, 2026 and Sibyl Care on October 28, 2026.

---

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