# Stackr vs Pepdex

The clearest difference is rating: Pepdex at 5.0 against Stackr's 4.4. Pepdex also leads on review sentiment (100% vs 69%). Stackr's advantage is ratings volume (202 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days and Pepdex sells 4 in-app purchases, starting at $5.00 per 7 days. Whichever you choose, the download price is not the number that matters.

Pepdex holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Stackr has 202 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 69% of Stackr's written reviews are positive against 100% of Pepdex's.

Stackr ships an update weekly, Pepdex every 5 days. Both last shipped on October 31, 2026.

## The numbers

| Metric | Stackr | Pepdex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (202 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/pepdex-peptide-tracker/id6787544320/reviews)** |
| Number of ratings | **202** | 6 |
| Positive reviews | 68.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Freemium | Freemium |
| Size | 88 MB | 67 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 17+ |
| Developer | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) | [ISMAEL JAVIER RUIZ](https://appshunter.io/developer/6787544322) |

## What reviewers say

### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587)

This app simplifies tracking peptide and GLP-1 doses, including supplies like vials and pens. It offers smart reminders, home screen widgets, and visual charts of estimated active levels based on half-life. Designed for users managing peptide protocols, it keeps your dosing information organized and accessible.

**Highlights:** Log peptide and GLP-1 doses, Track vials, pens, and other supplies, Smart reminders for next doses, Home screen widgets, Estimated active level charts, Multi-peptide stack tracking, Reference pages for common compounds

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stackr+ Weekly | $7.99 | per 7 days |
| Monthly | $12.99 | per month |
| Stackr+ Yearly | $29.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $49.99 | per year |
| Stackr+ Yearly | $59.99 | per year |
| Yearly | $69.99 | per year |


### Pepdex

[App page](https://appshunter.io/ios/app/pepdex-peptide-tracker/id6787544320)

Track peptide and supplement usage with reminders for shots and vial levels. Access an evidence-based library and AI-powered coach for information. Integrates with Apple Health for comprehensive wellness tracking.

**Highlights:** Peptide and supplement tracking, Shot reminders and vial countdowns, Evidence-based library with research links, AI-powered coach for compound questions, Integration with Apple Health, Log supplements, food, workouts, and weight

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pepdex Pro Weekly | $5.00 | per 7 days |
| Pepdex Pro Monthly | $7.99 | per month |
| Pepdex Pro Cycle Pass | $29.99 | per 3 months |
| Pepdex Pro Annual | $59.99 | per year |


## Frequently asked questions

### Is Stackr free?

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

### Is Pepdex free?

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

### Which has better reviews, Stackr or Pepdex?

Pepdex is rated higher. Stackr averages 4.4 out of 5 from 202 ratings, while Pepdex averages 5.0 from 6 ratings.

### Do Stackr or Pepdex have ads?

Neither Stackr nor Pepdex shows ads.

### Which is updated more often, Stackr or Pepdex?

Stackr ships an update weekly, and Pepdex every 5 days. Most recently, Stackr was updated on October 31, 2026 and Pepdex on October 31, 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.*