# myStack vs PeptidePal

The clearest difference is review sentiment: myStack at 100% against PeptidePal's 30%. myStack also leads on in-app purchases (none vs 20) and ads (none vs shown). PeptidePal's advantage is update cadence (every 5 days vs every 3 months) and ratings volume (4.9K vs 7). On price there is nothing between them.

Both are free to download. PeptidePal sells 19 in-app purchases, starting at $3.99 per 7 days. myStack asks for nothing beyond the download.

myStack holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: PeptidePal has 4.9K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 100% of myStack's written reviews are positive against 30% of PeptidePal's.

myStack ships an update every 3 months, PeptidePal every 5 days. The most recent releases landed on September 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | myStack | PeptidePal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/mystack-health-intelligence/id6743498624/reviews)** | [4.7 (4.9K ratings)](https://appshunter.io/ios/app/peptidepal-peptide-tracker/id6762102880/reviews) |
| Number of ratings | 7 | **4.9K** |
| Positive reviews | **100.0% of reviews** | 29.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#193** |
| Size | 2 MB | 105 MB |
| Requires iOS | **14.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Balam LLC](https://appshunter.io/developer/1803211636) | [Blank Labs LLC](https://appshunter.io/developer/1871385584) |

## 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


### PeptidePal

[App page](https://appshunter.io/ios/app/peptidepal-peptide-tracker/id6762102880)

**Currently charting:** #193 Top Grossing · Health & Fitness (US App Store)

This app helps users track GLP-1 medications, research peptides, and TRT. It offers a protocol builder, a comprehensive peptide library, and a reconstitution calculator with visual aids. It also includes supply alerts and injection site rotation guidance.

**Highlights:** GLP-1 shot tracking, Research peptide tracking, TRT tracking, Protocol builder, Reconstitution calculator, Vial inventory & supply alerts, Injection site rotation

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeptidePal – Weekly | $3.99 | per 7 days |
| PeptidePal – Weekly | $4.99 | per 7 days |
| PeptidePal – Monthly | $8.99 | per month |
| PeptidePal – Monthly | $9.99 | per month |
| PeptidePal – Monthly | $11.99 | per month |
| PeptidePal – Monthly | $12.99 | per month |
| PeptidePal – Monthly | $14.99 | per month |
| PeptidePal – Yearly | $19.99 | per year |
| PeptidePal – Monthly | $19.99 | per month |
| PeptidePal – Quarterly | $29.99 | per 3 months |
| PeptidePal – Yearly | $29.99 | per year |
| PeptidePal – Yearly | $35.99 | per year |
| PeptidePal – Yearly | $35.99 | per year |
| PeptidePal – Quarterly | $39.99 | per 3 months |
| PeptidePal – Yearly | $39.99 | per year |
| PeptidePal – Yearly | $39.99 | per year |
| PeptidePal – Yearly | $44.99 | per year |
| PeptidePal – Yearly | $59.99 | per year |
| PeptidePal – Yearly | $79.99 | per year |


## Frequently asked questions

### Is myStack free?

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

### Is PeptidePal free?

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

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

myStack is rated higher. myStack averages 5.0 out of 5 from 7 ratings, while PeptidePal averages 4.7 from 4.9K ratings.

### Do myStack or PeptidePal have ads?

PeptidePal shows ads; myStack does not.

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

myStack ships an update every 3 months, and PeptidePal every 5 days. Most recently, myStack was updated on September 26, 2026 and PeptidePal on October 23, 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.*