# Stress Duck vs 9 Cups

The clearest difference is in-app purchases: Stress Duck at none against 9 Cups's 1. Stress Duck also leads on device support (3 vs 1). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. 9 Cups sells 1 one-off in-app purchase. Stress Duck asks for nothing beyond the download.

Stress Duck ships an update every 2 days, 9 Cups daily. The most recent releases landed on October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Stress Duck | 9 Cups |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/9-cups/id6760085268/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Free | Free |
| Size | 27 MB | 4 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [子龙 郭](https://appshunter.io/developer/1499776496) | [AARON DAVID KASKOWITZ](https://appshunter.io/developer/1882547900) |

## What reviewers say

### Stress Duck

[App page](https://appshunter.io/ios/app/stress-duck/id6472258375)

This app helps you manage daily stress and track your mood. It integrates with Apple Health to display health data like step count and sleep, offering a simple way to monitor your well-being and encourage happiness.

**Highlights:** Daily mood and stress status check, Apple Health data integration, View step count, sleep, and calorie info, Privacy-focused data handling, Encourages happiness and stress reduction

**Features:** macOS Compatibility

**In-app purchases:** none


### 9 Cups

[App page](https://appshunter.io/ios/app/9-cups/id6760085268)

This app assists users in adhering to the Wahls Protocol by tracking daily intake of specific nutrient-dense foods. It supports all protocol levels and offers features like AI-powered meal suggestions and progress visualization.

**Highlights:** Tap-to-log tracking for 9 food categories, Visual progress ring and daily score, AI-powered meal suggestions, Snap & Track food identification, Wahls Protocol guide with food lists, Weekly recap and progress cards, Smart reminders

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime Access | $4.99 | one-time |


## Frequently asked questions

### Is Stress Duck free?

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

### Is 9 Cups free?

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

### Do Stress Duck or 9 Cups have ads?

Neither Stress Duck nor 9 Cups shows ads.

### Which is updated more often, Stress Duck or 9 Cups?

Stress Duck ships an update every 2 days, and 9 Cups daily. Most recently, Stress Duck was updated on October 5, 2026 and 9 Cups on September 29, 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.*