# myStack vs Biostacks

The clearest difference is in-app purchases: myStack at none against Biostacks's 2. myStack also leads on ratings volume (7 vs 1). Biostacks's advantage is update cadence (every 10 days vs every 3 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. Biostacks sells 2 in-app purchases, starting at $3.99 per month. myStack asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for myStack against 5.0 for Biostacks. That said, the two scores are not equally well evidenced: myStack has 7 ratings behind it against 1, so its average is the more settled of the two.

myStack ships an update every 3 months, Biostacks every 10 days. The most recent releases landed on August 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | myStack | Biostacks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/mystack-health-intelligence/id6743498624/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/biostacks-supplement-tracker/id6763328808/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | **Free** | Freemium |
| Size | 2 MB | 63 MB |
| Requires iOS | **14.1** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Balam LLC](https://appshunter.io/developer/1803211636) | [Hmujo LLC](https://appshunter.io/developer/1895266544) |

## What reviewers say

### myStack

[App page](https://appshunter.io/ios/app/mystack-health-intelligence/id6743498624)

This app uses AI to analyze clinical studies and create personalized supplement recommendations based on your health goals, diet, and medications. It provides evidence-based advice, dosage suggestions, and summaries of scientific research, developed by experts.

**Highlights:** Personalized supplement stacks, AI-driven recommendations, Analysis of 10,000+ clinical studies, Medication interaction screening, Evidence-based supplement advice, Quality-vetted supplement curation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Biostacks

[App page](https://appshunter.io/ios/app/biostacks-supplement-tracker/id6763328808)

Easily manage your supplement intake with barcode scanning, AI assistance, and detailed insights. Track routines, monitor nutrient coverage, and analyze your stack's effectiveness and cost. Prioritizes user privacy with offline functionality and optional iCloud sync.

**Highlights:** Barcode scanning for supplement library, AI-powered supplement routine analysis, Customizable daily and cycle schedules, StackScore for routine quality, Potential interaction warnings, RDA coverage and nutrient overlap analysis, Mood, energy, and sleep trend tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Biostacks Pro - Monthly | $3.99 | per month |
| Biostacks Pro - Annual | $24.99 | per year |


## Frequently asked questions

### Is myStack free?

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

### Is Biostacks free?

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

### Which has better reviews, myStack or Biostacks?

myStack and Biostacks are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do myStack or Biostacks have ads?

Neither myStack nor Biostacks shows ads.

### Which is updated more often, myStack or Biostacks?

myStack ships an update every 3 months, and Biostacks every 10 days. Most recently, myStack was updated on August 17, 2026 and Biostacks on September 18, 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.*