# Milligram vs Stacksy

The clearest difference is monetization model: Milligram at free with in-app purchases against Stacksy's subscription. Milligram also leads on ratings volume (298 vs 16). Stacksy's advantage is review sentiment (100% vs 71%) and rating (5.0 vs 4.7). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Milligram sells 3 in-app purchases, starting at $17.49 per month and Stacksy sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Stacksy holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Milligram has 298 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 71% of Milligram's written reviews are positive against 100% of Stacksy's.

Milligram ships an update every 4 days, Stacksy every 2 days. The most recent releases landed on September 30, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Milligram | Stacksy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (298 ratings)](https://appshunter.io/ios/app/milligram-peptide-tracker/id6759593151/reviews) | **[5.0 (16 ratings)](https://appshunter.io/ios/app/stacksy/id6782694853/reviews)** |
| Number of ratings | **298** | 16 |
| Positive reviews | 71.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 2 days** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 164 MB | 65 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Enzo Anderson](https://appshunter.io/developer/1879259083) | [Velor4 LLC](https://appshunter.io/developer/6782694855) |

## 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:** macOS Compatibility, Apple Watch app, Vision Pro support

**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 |


### Stacksy

[App page](https://appshunter.io/ios/app/stacksy/id6782694853)

Organize and track your personal peptide protocol with this private application. Manage your entire routine, including what peptides to take and when. Offers monthly and yearly subscription plans for full access.

**Highlights:** Organize peptide protocols, Track peptide dosages, Schedule peptide intake, Private routine management, GLP-1 tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacksy Pro (Monthly) | $9.99 | per month |
| Stacksy Pro (Yearly) | $39.99 | per year |


## Frequently asked questions

### Is Milligram free?

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

### Is Stacksy free?

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

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

Stacksy is rated higher. Milligram averages 4.7 out of 5 from 298 ratings, while Stacksy averages 5.0 from 16 ratings.

### Do Milligram or Stacksy have ads?

Neither Milligram nor Stacksy shows ads.

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

Milligram ships an update every 4 days, and Stacksy every 2 days. Most recently, Milligram was updated on September 30, 2026 and Stacksy on September 18, 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.*