# Willow® vs SkinTracker

The clearest difference is ads: SkinTracker at none against Willow®'s shown. SkinTracker also leads on update cadence (every 9 days vs monthly) and iOS requirement (13.1 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Willow® ships an update monthly, SkinTracker every 9 days. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Willow® | SkinTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.7K ratings)](https://appshunter.io/ios/app/willow/id1579004074/reviews)** | — |
| Number of ratings | **2.7K** | — |
| Positive reviews | 13.5% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 102 MB | 111 MB |
| Requires iOS | 15.6 | **13.1** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Willow Innovations, Inc.](https://appshunter.io/developer/1168207125) | [University of California at San Francisco](https://appshunter.io/developer/446489325) |

## What reviewers say

### Willow®

[App page](https://appshunter.io/ios/app/willow/id1579004074)

Manage your Willow breast pump, track milk output, and access expert advice for pumping and postpartum care. Features include personalized pump control, session history, and AI-powered support.

**Highlights:** Control Willow pumps remotely, Track milk output and session history, Manage digital milk stash (SmartStash), Access expert articles and videos, AI-powered women's health chat, Book expert consultations

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 💡 Convenient for on-the-go pumping
- 👍 Comfortable and effective pumps

**What reviewers complain about**

- 🐛 Buggy app with connectivity issues
- 🔋 Poor battery life
- 👎 Lacking key features like pump history and volume tracking

**Reported bugs**

- App frequently disconnects from pumps
- Timer and session data not always accurate
- Pumps sometimes stop working mid-session

**Requested features**

- Add ability to log pumping volume and history
- Allow customization of pump timer
- Improve app responsiveness and reliability


### SkinTracker

[App page](https://appshunter.io/ios/app/skintracker-parade/id6670272684)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Willow® free?

Willow® is free to download, with no in-app purchases.

### Is SkinTracker free?

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

### Do Willow® or SkinTracker have ads?

Willow® shows ads; SkinTracker does not.

### Which is updated more often, Willow® or SkinTracker?

Willow® ships an update monthly, and SkinTracker every 9 days. Most recently, Willow® was updated on October 19, 2026 and SkinTracker on October 15, 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.*