Stress Duck vs 9 Cups
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stress Duck
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.
- 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
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We wave goodbye to the pressure in life and work, and let the pressure GO! GO! GO! Life is complicated enough, so we hope to bring you a simple and brisk interactive experience. We promise not to obtain any of your private information for uploading or sharing it with other third parties. Please feel free to use it as it will not cause you any new anxiety or irritability. Easily check your daily mood and stress status, adjust yourself every day, and remember to stay happy. Never punish yourself for other people’s mistakes~ Supports viewing partial health information for each week and specified days, Now supports viewing, step count, sleep, mindfulness, and calorie information. At last - The heart rate variability (HRV) and other heart rate-related data obtained are obtained with authorization from Apple Health. We only display them and do not store and forward them. Be sure to protect your privacy. - The data information provided in the APP is for reference only and is not recommended for use in any medical advice or diagnostic results. Before making any health-related decisions, always seek the advice of a physician; only a physician can make an accurate diagnosis of your individual situation. - Finally, I hope you say goodbye to stress. Come on~ Remember to authorize us to access your health data~
9 Cups
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.
- 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
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9 Cups helps you follow the Wahls Protocol by tracking your daily intake of healing foods. Built for people managing MS, autoimmune conditions, or anyone committed to nutrient-dense eating. Track 9 categories: leafy greens, colored produce (red, orange, blue), sulfur-rich vegetables, protein, seaweed, fermented foods, and organ meat. Supports all three Wahls Protocol levels. Features: • Simple tap-to-log tracking for all 9 categories • Visual progress ring and daily score • Streak tracking to build consistency • Wahls Protocol guide with food lists for every category • Smart reminders based on your habits • Meal suggestions tailored to what you still need • Weekly recap with shareable progress cards • Snap & Track: photograph a meal and AI identifies Wahls Protocol foods automatically • Trends and insights dashboard with AI-powered weekly insights • Home screen widget • Streak celebrations All features are free during early access. This app is not a medical device and does not provide medical advice. Always consult your healthcare provider before making dietary changes.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Stress Duck | 9 Cups |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | — | 4 — better |
| Update frequency | Every 2 days | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Apple Watch — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 27 MB | 4 MB |
| Age rating | 12+ | 4+ |
| Developer | 子龙 郭 | AARON DAVID KASKOWITZ |
Customer experience
Stress Duck
9 Cups
In-app purchases
Stress Duck
No in-app purchases
9 Cups
- Premium Lifetime Access$4.99
Questions
Is Stress Duck free?
Is 9 Cups free?
Do Stress Duck or 9 Cups have ads?
Which is updated more often, Stress Duck or 9 Cups?
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