Comparison

Open vs HealthStack

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

Head to head
About

Open

Features
Read full description

Open-OH: supporting you on your journey with Long Covid, Fibromyalgia, ME/CFS and more. Track your symptoms, and engage with resources to help you increase your functional capacity and make informed decisions about your condition and occupation DIARIES Track your activity levels, sleep, meals, symptoms and more ASSESSMENTS Access industry standard, condition specific Patient Reported Outcome Measures (PROMs) RESOURCES Receive personalised suggestions to access lots of support resources to educate and guide you on your journey with your long term conditions. Including symptoms specific resources, financial guides, and advice for your manager or employer. FIND SUPPORT Find local services to support your journey

About

HealthStack

This app helps you manage your vitamin and supplement routine. It analyzes your specific products to identify potential risks and interactions, offering personalized AI-driven insights for safer and more effective supplementation.

Highlights
  • Intelligent AI assistant for personalized insights
  • Automatic safety checks for nutrient intake
  • Comprehensive view of total nutrient breakdown
  • Precision tracking of inventory and schedules
  • Doctor-ready PDF reports
  • Shareable supplement regimen
Features
Read full description

HealthStack brings clarity to your supplement routine. It combines precision tracking with intelligent analysis to ensure your regimen is effective, consistent, and safe. Supplements are complex; managing them shouldn’t be. HealthStack analyzes your specific brands and dosages to spot hidden overlaps and potential risks. With a context-aware AI assistant built right in, you don’t just track your data—you understand it. Features: Intelligent Assistant Get answers tailored to your specific stack. Ask about interactions, timing, or side effects, and receive insights based on the actual inventory you have logged—not generic advice. Safety Checks Automatically detect when you exceed Tolerable Upper Intake Levels (UL). HealthStack aggregates nutrient data across every pill in your routine to warn you of high dosages before they become a problem. Share Your Stack Keep friends, family, or trainers in the loop. Send your full regimen with a single tap for accountability, or to simply help others discover what works for you. The Full Picture View your total nutrient breakdown on a single screen. See exactly how much Magnesium, Vitamin D, or Zinc you are getting from all your supplements combined. Precision Tracking Organize your inventory by brand, dosage, and form. Create custom schedules—morning, night, or with food—and build a streak with the dedicated daily journal. Doctor-Ready Reports Generate professional PDF summaries of your regimen instantly. Perfect for keeping your healthcare provider informed during checkups without the guesswork. Disclaimer HealthStack is for informational purposes only and does not provide medical advice. Always consult a physician before changing your supplement routine. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Get in touch: contact@gethealthstack.com

Screenshots

Open4 screens
HealthStack4 screens

Verdict

The call

The clearest difference is in-app purchases: Open at none against HealthStack's 4. Open also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement 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. HealthStack sells 4 in-app purchases, starting at $5.99 per 7 days. Open asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 8, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 7 level
Open versus HealthStack: the parameters behind the verdict, then further details
ParameterOpenHealthStack
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better16.4
Further details — not scored
Size30 MB137 MB
Age rating4+12+
DeveloperElarospurpurasalgada

In-app purchases

None

Open

No in-app purchases

4 purchases

HealthStack

Subscriptions3
  • Weekly$5.997 Days
  • Monthly$14.991 Month
  • Annual3 Days trial$59.991 Year
One-time1
  • Lifetime$99.99

Questions

Is Open free?
Open is free to download, with no in-app purchases.
Is HealthStack free?
HealthStack is free to download, with in-app purchases available.
Do Open or HealthStack have ads?
HealthStack shows ads; Open does not.
Which is updated more often, Open or HealthStack?
Open ships an update every 2 weeks, and HealthStack every 2 weeks. Most recently, Open was updated on October 8, 2026 and HealthStack on October 3, 2026.

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