# Milligram vs Stackr

The clearest difference is rating: Milligram at 4.7 against Stackr's 4.4. Stackr's advantage is chart position (#187 vs unranked) and review sentiment (68% vs 58%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Milligram sells 3 in-app purchases, starting at $17.49 per month and Stackr sells 7 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Milligram holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 615 and 225 respectively. Written reviews complicate that: 58% of Milligram's written reviews are positive against 68% of Stackr's, so the app with the better star average is not the one people write more warmly about.

Milligram ships an update every 5 days, Stackr weekly. Both last shipped on November 9, 2026.

## The numbers

| Metric | Milligram | Stackr |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (615 ratings)](https://appshunter.io/ios/app/milligram-peptide-tracker/id6759593151/reviews)** | [4.4 (225 ratings)](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587/reviews) |
| Number of ratings | **615** | 225 |
| Positive reviews | 58.5% of reviews | **67.6% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Weekly |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | — | **#187** |
| Size | 171 MB | 88 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, Apple Watch** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Milligram Health Pty Ltd](https://appshunter.io/developer/6821805255) | [Stackr Holdings LLC](https://appshunter.io/developer/1896525659) |

## What reviewers say

### Milligram

[App page](https://appshunter.io/ios/app/milligram-peptide-tracker/id6759593151)

Optimize your health and performance with science-backed data. Track peptide levels, analyze bloodwork, and monitor progress with intelligent insights. Get personalized feedback on your protocol and health metrics.

**Highlights:** Intelligent protocol analysis, Compound level tracking, Bloodwork analysis and biomarker flagging, Comprehensive compound library, Progress scans for body composition, Stack analytics and interaction flagging, Journaling for health metrics, Reconstitution calculator

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Milligram Pro | $17.49 | per month |
| Milligram Pro | $49.99 | per year |
| Milligram Pro | $69.99 | per year |


### Stackr

[App page](https://appshunter.io/ios/app/stackr-peptide-glp-1-tracker/id6764821587)

**Currently charting:** #187 Top Grossing · Health & Fitness (US App Store)

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 |


## Frequently asked questions

### Is Milligram free?

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

### Is Stackr free?

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

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

Milligram is rated higher. Milligram averages 4.7 out of 5 from 615 ratings, while Stackr averages 4.4 from 225 ratings.

### Do Milligram or Stackr have ads?

Neither Milligram nor Stackr shows ads.

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

Milligram ships an update every 5 days, and Stackr weekly. Most recently, Milligram was updated on November 9, 2026 and Stackr on November 9, 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.*