# Phoebe Pregnancy vs FourthTri

The clearest difference is in-app purchases: Phoebe Pregnancy at none against FourthTri's 1. Phoebe Pregnancy also leads on iOS requirement (13.0 vs 18.0). FourthTri's advantage is update cadence (every 11 days vs every 17 months). On price, ads and device support there is nothing between them.

Both are free to download. FourthTri sells 1 one-off in-app purchase. Phoebe Pregnancy asks for nothing beyond the download.

Phoebe Pregnancy ships an update every 17 months, FourthTri every 11 days. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Phoebe Pregnancy | FourthTri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 11 days** |
| Size | 13 MB | 6 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [PHOEBE PUTNEY HEALTH SYSTEM, INC.](https://appshunter.io/developer/1491684084) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Phoebe Pregnancy

[App page](https://appshunter.io/ios/app/phoebe-pregnancy/id1491802222)

**Features:** macOS Compatibility

**In-app purchases:** none


### FourthTri

[App page](https://appshunter.io/ios/app/fourthtri-postpartum/id6792523331)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $49.99 | one-time |


## Frequently asked questions

### Is Phoebe Pregnancy free?

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

### Is FourthTri free?

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

### Do Phoebe Pregnancy or FourthTri have ads?

Neither Phoebe Pregnancy nor FourthTri shows ads.

### Which is updated more often, Phoebe Pregnancy or FourthTri?

Phoebe Pregnancy ships an update every 17 months, and FourthTri every 11 days. Most recently, Phoebe Pregnancy was updated on October 7, 2026 and FourthTri on October 16, 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.*