# Postpartum Tracker vs FourthTri

The clearest difference is update cadence: FourthTri at every 11 days against Postpartum Tracker's every 2 months. Postpartum Tracker's advantage is iOS requirement (15.5 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Postpartum Tracker sells 14 in-app purchases, starting at $4.95 per month and FourthTri sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Postpartum Tracker ships an update every 2 months, FourthTri every 11 days. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Postpartum Tracker | FourthTri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Size | 217 MB | 6 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [CARECLINIC SOFTWARE INC.](https://appshunter.io/developer/1436021751) | [InnovaLabWorks](https://appshunter.io/developer/1888514726) |

## What reviewers say

### Postpartum Tracker

[App page](https://appshunter.io/ios/app/postpartum-tracker/id6770621629)

**Features:** macOS Compatibility, Siri integration, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flex Pass | $4.95 | per month |
| Weekly Premium | $6.99 | per 7 days |
| weather max | $9.99 | per 3 months |
| carey ai max | $19.99 | per month |
| Yearly Access | $24.99 | per year |
| carey ai ultra | $29.99 | per month |
| Lite Monthly | $29.99 | per month |
| Annual Deal | $34.99 | per year |
| Extended Annual | $39.99 | per year |
| Yearly Premium | $39.99 | per year |
| Yearly Premium | $49.99 | per year |
| Annual Trial | $59.99 | per year |
| Care Plan | $4.99 | one-time |
| carey ai credits | $8.99 | one-time |


### 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 Postpartum Tracker free?

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

### Is FourthTri free?

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

### Do Postpartum Tracker or FourthTri have ads?

Neither Postpartum Tracker nor FourthTri shows ads.

### Which is updated more often, Postpartum Tracker or FourthTri?

Postpartum Tracker ships an update every 2 months, and FourthTri every 11 days. Most recently, Postpartum Tracker was updated on October 2, 2026 and FourthTri on September 30, 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.*