# Stacker vs Peptide Tracker

Stacker and Peptide Tracker both sit at 4.8 stars, but that hides the real split: 100% of Peptide Tracker's written reviews are positive against 86% of Stacker's. Peptide Tracker also leads on ratings volume (86 vs 26). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Stacker sells 2 in-app purchases, starting at $69.99 per year and Peptide Tracker sells 6 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Stacker against 4.7 for Peptide Tracker. Both are backed by a comparable volume of ratings — 26 and 86 respectively. Written reviews are what separate them: 86% of Stacker's written reviews are positive against 100% of Peptide Tracker's.

Stacker ships an update every 4 days, Peptide Tracker every 6 days. Both last shipped on November 5, 2026.

## The numbers

| Metric | Stacker | Peptide Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (26 ratings)](https://appshunter.io/ios/app/stacker-peptide-tracker/id6776001253/reviews)** | [4.7 (86 ratings)](https://appshunter.io/ios/app/peptide-tracker-peppy/id6782705929/reviews) |
| Number of ratings | 26 | **86** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 6 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 52 MB | 56 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Above Capital LLC](https://appshunter.io/developer/6776001255) | [Automation Launchpad](https://appshunter.io/developer/1887975492) |

## What reviewers say

### Stacker

[App page](https://appshunter.io/ios/app/stacker-peptide-tracker/id6776001253)

This app helps you discover peptide stacks tailored to your health goals, track your routine with smart reminders, and monitor your progress with photos and metrics. It also features a peptide library and an AI assistant for information.

**Highlights:** Personalized stack recommendations, Curated peptide stack library, Routine and progress tracking, Smart scheduling and reminders, Peptide information catalog, AI peptide assistant (Pro), Partnered product purchasing (Pro)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacker Pro | $69.99 | per year |
| Stacker Pro | $129.99 | per year |


### Peptide Tracker

[App page](https://appshunter.io/ios/app/peptide-tracker-peppy/id6782705929)

This app helps users manage their GLP-1 and peptide injections. It allows for dose tracking, unit conversion, vial organization, injection site rotation, and timely reminders. It also tracks weight and symptoms to visualize progress.

**Highlights:** Dose logging and history, MG to syringe unit conversion, Vial and stash organization, Injection site rotation map, Flexible dose reminders, Weight and symptom tracking, Local data storage

**Features:** Family Sharing

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peppy Premium Weekly | $4.99 | per 7 days |
| Peppy Premium Monthly | $9.99 | per month |
| Peppy Yearly Special Offer | $19.99 | per year |
| Peppy Premium Yearly | $39.99 | per year |
| Peppy Premium Annual | $39.99 | per year |
| Peppy Premium Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Stacker free?

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

### Is Peptide Tracker free?

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

### Which has better reviews, Stacker or Peptide Tracker?

Stacker is rated higher. Stacker averages 4.8 out of 5 from 26 ratings, while Peptide Tracker averages 4.7 from 86 ratings.

### Do Stacker or Peptide Tracker have ads?

Both Stacker and Peptide Tracker show ads.

### Which is updated more often, Stacker or Peptide Tracker?

Stacker ships an update every 4 days, and Peptide Tracker every 6 days. Most recently, Stacker was updated on November 5, 2026 and Peptide Tracker on November 5, 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.*