# PeptideX vs StackTrax

The clearest difference is monetization model: StackTrax at freemium against PeptideX's subscription. StackTrax also leads on update cadence (daily vs every 5 weeks) and ratings volume (7 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. PeptideX sells 2 in-app purchases, starting at $12.99 per month and StackTrax sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

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

PeptideX ships an update every 5 weeks, StackTrax daily. The most recent releases landed on August 24, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | PeptideX | StackTrax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/peptidex-track-peptides/id6764209563/reviews) | [5.0 (7 ratings)](https://appshunter.io/ios/app/stacktrax-peptide-tracker/id6769495613/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Subscription | **Freemium** |
| Size | 40 MB | 32 MB |
| Requires iOS | 18.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Adventure Labs d.o.o.](https://appshunter.io/developer/1710970735) | [Isaiah Deutsch](https://appshunter.io/developer/1896663496) |

## What reviewers say

### PeptideX

[App page](https://appshunter.io/ios/app/peptidex-track-peptides/id6764209563)

This app helps users meticulously track their peptide doses, manage injection site rotation, and monitor progress towards their health and performance goals. It provides a structured dashboard to build consistent habits around complex protocols.

**Highlights:** Dose tracking, Injection site rotation, Progress monitoring, History and notes, Protocol adherence tracking, Consistency building

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited access | $12.99 | per month |
| Unlimited access | $44.99 | per year |


### StackTrax

[App page](https://appshunter.io/ios/app/stacktrax-peptide-tracker/id6769495613)

Track peptide protocols and GLP-1 titrations with detailed logging, reminders, and injection site rotation. Access a research library and integrate with Oura for comprehensive health insights. Includes nutrition tracking and an AI protocol importer.

**Highlights:** Peptide and GLP-1 tracking, Dose logging and reminders, Injection site rotation, Research library with compound guides, Oura integration, AI Protocol Importer, Nutrition tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is PeptideX free?

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

### Is StackTrax free?

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

### Which has better reviews, PeptideX or StackTrax?

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

### Do PeptideX or StackTrax have ads?

Neither PeptideX nor StackTrax shows ads.

### Which is updated more often, PeptideX or StackTrax?

PeptideX ships an update every 5 weeks, and StackTrax daily. Most recently, PeptideX was updated on August 24, 2026 and StackTrax 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.*