# Stackr vs Stacker

The clearest difference is ads: Stackr at none against Stacker's shown. Stackr also leads on ratings volume (232 vs 26). Stacker's advantage is rating (4.8 vs 4.4) and review sentiment (86% vs 69%). 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 3 in-app purchases, starting at $49.99 per year. Whichever you choose, the download price is not the number that matters.

Stacker holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Stackr has 232 ratings behind it against 26, 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 86% of Stacker's.

Stackr ships an update weekly, Stacker every 4 days. Both last shipped on November 13, 2026.

## The numbers

| Metric | Stackr | Stacker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (232 ratings)](https://appshunter.io/ios/app/stackr-peptide-tracker/id6764821587/reviews) | **[4.8 (26 ratings)](https://appshunter.io/ios/app/stacker-peptide-tracker/id6776001253/reviews)** |
| Number of ratings | **232** | 26 |
| Positive reviews | 69.4% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 86 MB | 52 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-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 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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacker Pro | $49.99 | per year |
| Stacker Pro | $69.99 | per year |
| Stacker Pro | $129.99 | 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 232 ratings, while Stacker averages 4.8 from 26 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 weekly, and Stacker every 4 days. Most recently, Stackr was updated on November 13, 2026 and Stacker on November 13, 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.*