# Stacker vs Peppy

The clearest difference is ratings volume: Peppy at 68 against Stacker's 12. On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Stacker sells 1 in-app purchase, starting at $69.99 per year and Peppy sells 3 in-app purchases, starting at $9.99 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 Stacker against 4.9 for Peppy. That said, the two scores are not equally well evidenced: Peppy has 68 ratings behind it against 12, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Stacker ships an update every 4 days, Peppy every 6 days. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Stacker | Peppy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/stacker-peptide-tracker/id6776001253/reviews)** | [4.9 (68 ratings)](https://appshunter.io/ios/app/peppy-peptide-tracker/id6782705929/reviews) |
| Number of ratings | 12 | **68** |
| Positive reviews | 100.0% 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 | 49 MB | 50 MB |
| Requires iOS | **17.0** | 18.0 |
| 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, dose, and track peptide protocols for various health goals. It offers curated stacks, personalized schedules, and progress tracking with reminders. Features include a reconstitution calculator and an AI assistant for protocol summaries.

**Highlights:** Personalized stack building, Curated stacks with dosage guides, Dose and progress tracking, Smart dosing schedules and reminders, Reconstitution calculator, Expert-vetted peptide library, AI peptide assistant (Pro)

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### Peppy

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peppy Premium Monthly | $9.99 | per month |
| Peppy Premium Yearly | $49.99 | 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 Peppy free?

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

### Which has better reviews, Stacker or Peppy?

Stacker is rated higher. Stacker averages 5.0 out of 5 from 12 ratings, while Peppy averages 4.9 from 68 ratings.

### Do Stacker or Peppy have ads?

Both Stacker and Peppy show ads.

### Which is updated more often, Stacker or Peppy?

Stacker ships an update every 4 days, and Peppy every 6 days. Most recently, Stacker was updated on October 1, 2026 and Peppy on October 2, 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.*