Comparison

Stress Duck vs 9 Cups

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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~

About

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.

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
Read full description

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

Stress Duck4 screens
9 Cups4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Stress Duck versus 9 Cups: the parameters behind the verdict, then further details
ParameterStress Duck9 Cups
PriceFreeFree
Rating—5.0 (4 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—4 — better
Update frequencyEvery 2 daysDaily — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size27 MB4 MB
Age rating12+4+
Developer子龙 郭AARON DAVID KASKOWITZ

Customer experience

Stress Duck

Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

9 Cups

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stress Duck

No in-app purchases

1 purchases

9 Cups

One-time1
  • Premium Lifetime Access$4.99

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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