# Stackr vs Stacker

The clearest difference is rating: Stacker at 5.0 against Stackr's 4.4. Stacker also leads on review sentiment (100% vs 72%). Stackr's advantage is ads (none vs shown) and ratings volume (143 vs 12). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Stackr sells 7 in-app purchases, starting at $7.99 per 7 days and Stacker sells 1 in-app purchase, starting at $69.99 per year. Whichever you choose, the download price is not the number that matters.

Stacker holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Stackr has 143 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 72% of Stackr's written reviews are positive against 100% of Stacker's.

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Stackr | Stacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (143 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/stacker-peptide-tracker/id6776001253/reviews)** |
| Number of ratings | **143** | 12 |
| Positive reviews | 72.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 days | Every 4 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 88 MB | 49 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) | [Above Capital LLC](https://appshunter.io/developer/6776001255) |

## 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 |


### 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 |


## Frequently asked questions

### Is Stackr free?

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

### Is Stacker free?

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

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

Stacker is rated higher. Stackr averages 4.4 out of 5 from 143 ratings, while Stacker averages 5.0 from 12 ratings.

### Do Stackr or Stacker have ads?

Stacker shows ads; Stackr does not.

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

Stackr ships an update every 4 days, and Stacker every 4 days. Most recently, Stackr was updated on October 13, 2026 and Stacker on October 1, 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.*