# Stack Tracker AI vs PepTracker

The clearest difference is review sentiment: PepTracker at 77% against Stack Tracker AI's 0%. PepTracker also leads on rating (4.7 vs 4.0) and ratings volume (413 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Stack Tracker AI sells 2 in-app purchases, starting at $1.99 per month and PepTracker sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

PepTracker holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: PepTracker has 413 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of Stack Tracker AI's written reviews are positive against 77% of PepTracker's.

Stack Tracker AI ships an update fortnightly, PepTracker every 2 weeks. The most recent releases landed on June 4, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Stack Tracker AI | PepTracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043/reviews) | **[4.7 (413 ratings)](https://appshunter.io/ios/app/peptracker-dose-log/id6747189889/reviews)** |
| Number of ratings | 2 | **413** |
| Positive reviews | 0.0% of reviews | **77.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Freemium | Freemium |
| Size | 28 MB | 17 MB |
| Requires iOS | 26.0 | **18** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [MD Apps, LLC](https://appshunter.io/developer/346437629) | [Jayven Alan Villagomez Peredo](https://appshunter.io/developer/1820200864) |

## What reviewers say

### Stack Tracker AI

[App page](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043)

Effortlessly track, analyze, and optimize your supplement intake for improved wellness and fitness. Gain AI-powered insights, set flexible schedules, and visualize your progress with secure, private data storage.

**Highlights:** Seamless daily supplement tracking, AI-powered insights and trends, Flexible dose scheduling, Advanced progress visualizations, Private and secure data storage, Customizable supplement types

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $9.99 | per year |


### PepTracker

[App page](https://appshunter.io/ios/app/peptracker-dose-log/id6747189889)

This app helps users meticulously track peptide and GLP-1 medication doses. It allows for the creation of structured protocols, scheduling of injections, and calculation of precise syringe volumes. Users can monitor progress over time and receive reminders for upcoming doses.

**Highlights:** Log injection doses, Build peptide/GLP-1 protocols, Built-in dose calculator, Schedule reminders, Track progress metrics, Export logs

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yeary | $47.99 | per year |

**What reviewers like**

- 👍 Intuitive and easy to use
- 🚀 Powerful dose calculator
- 📊 Helpful for tracking weight loss goals
- ⏰ Useful reminders for injections
- 🗂️ Organizes multiple protocols

**What reviewers complain about**

- ⚠️ Only allows mcg dosage and calculations

**Reported bugs**

- Units function not working

**Requested features**

- Support for more units of measurement
- Ability to track more than 2 protocols


## Frequently asked questions

### Is Stack Tracker AI free?

Stack Tracker AI is free to download, with in-app purchases available.

### Is PepTracker free?

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

### Which has better reviews, Stack Tracker AI or PepTracker?

PepTracker is rated higher. Stack Tracker AI averages 4.0 out of 5 from 2 ratings, while PepTracker averages 4.7 from 413 ratings.

### Do Stack Tracker AI or PepTracker have ads?

Neither Stack Tracker AI nor PepTracker shows ads.

### Which is updated more often, Stack Tracker AI or PepTracker?

Stack Tracker AI ships an update fortnightly, and PepTracker every 2 weeks. Most recently, Stack Tracker AI was updated on June 4, 2026 and PepTracker on September 11, 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.*