StackDay: Supplement Tracker
Daily Vitamin & Habit Tracker
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Track every supplement, every day. Build real streaks and see your adherence stats — peptides, mushrooms, vitamins, all in one tap.
You buy supplements, take them for a week, then forget they exist. StackDay fixes that — log every dose, build real streaks, and finally see which supplements you actually stick with.
DAILY CHECKLIST
Your entire stack in one screen. Tap to check off each supplement as you take it — morning, afternoon, bedtime. Satisfying haptic feedback every time.
50+ SUPPLEMENTS BUILT IN
Peptides, mushrooms, vitamins, minerals, adaptogens, and performance compounds — all pre-loaded with dosages and benefits. Add your full stack in 30 seconds.
STREAKS & STATS
See your current streak, best streak, and 30-day adherence for every supplement. A monthly calendar heatmap shows exactly which days you nailed it.
SMART REMINDERS
Set morning, evening, and bedtime reminders so nothing slips. Customise the times to match your routine.
PRIVATE BY DESIGN
All your data stays on your iPhone. No account required. No cloud sync. Everything is stored locally.
STACKDAY PRO
Unlock unlimited history, detailed per-supplement stats, custom reminder times, and a home screen widget.
Free tier includes full daily tracking, 7-day history, and 3 reminders.
StackDay is built for the millions of people spending money on supplements but getting zero value because they can't stay consistent.
Privacy Policy: https://foggy-labs.github.io/privacy/stackday
Terms of Use: https://foggy-labs.github.io/terms
Support: https://foggy-labs.github.io/support
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
Performance improvements and bug fixes.
The developer, Fog Hill, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 17 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment Information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Pro Weekly Discount 4,99 zł
- Pro Weekly 9,99 zł
- Pro Annual Discount 99,99 zł
- Pro Monthly Discount 19,99 zł
- StackDay Pro Monthly Subscription 24,99 zł
- StackDay Pro Annual Subscription 99,99 zł
- Provider
Fog Hill, LLC
- Fog Hill, LLC has not identified itself as a trader for this app. If you are a consumer in the European Economic Area, consumer rights do not apply to agreements between you and the provider.
- Copyright
- © 2026 Foggy Labs, LLC