# FertilFlow vs PregWeek

The clearest difference is update cadence: FertilFlow at every 4 days against PregWeek's every 4 months. FertilFlow also leads on iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. FertilFlow sells 3 in-app purchases, starting at $3.99 per month and PregWeek sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

FertilFlow ships an update every 4 days, PregWeek every 4 months. The most recent releases landed on October 31, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | FertilFlow | PregWeek |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 4 months |
| Size | 48 MB | 4 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Roy Wynant](https://appshunter.io/developer/1888912999) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### FertilFlow

[App page](https://appshunter.io/ios/app/fertilflow/id6762568735)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FertilFlow Premium – Monthly | $3.99 | per month |
| FertilFlow Premium – 6 Months | $22.99 | per 6 months |
| FertilFlow Premium – Yearly | $39.99 | per year |


### PregWeek

[App page](https://appshunter.io/ios/app/pregweek-pregnancy-tracker/id6772260798)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Trimester Weekly | $4.99 | per 7 days |
| Prenatal Journal Yearly | $24.99 | per year |
| Bump Milestones Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is FertilFlow free?

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

### Is PregWeek free?

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

### Do FertilFlow or PregWeek have ads?

Neither FertilFlow nor PregWeek shows ads.

### Which is updated more often, FertilFlow or PregWeek?

FertilFlow ships an update every 4 days, and PregWeek every 4 months. Most recently, FertilFlow was updated on October 31, 2026 and PregWeek 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.*