# Milligram vs RetaPro

The clearest difference is update cadence: Milligram at every 5 days against RetaPro's every 2 months. Milligram also leads on review sentiment (58% vs 40%) and ratings volume (430 vs 45). RetaPro's advantage is iOS requirement (15.5 vs 17.0). On price, rating, 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 RetaPro sells 2 in-app purchases, starting at $39.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.7 for Milligram against 4.6 for RetaPro. That said, the two scores are not equally well evidenced: Milligram has 430 ratings behind it against 45, so its average is the more settled of the two. Written reviews are what separate them: 58% of Milligram's written reviews are positive against 40% of RetaPro's.

Milligram ships an update every 5 days, RetaPro every 2 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Milligram | RetaPro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (430 ratings)](https://appshunter.io/ios/app/milligram-peptide-tracker/id6759593151/reviews)** | [4.6 (45 ratings)](https://appshunter.io/ios/app/retapro-retatrutide-tracker/id6772027026/reviews) |
| Number of ratings | **430** | 45 |
| Positive reviews | **58.5% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 171 MB | 103 MB |
| Requires iOS | 17.0 | **15.5** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Milligram Health Pty Ltd](https://appshunter.io/developer/6821805255) | [Agora Labs Ltda.](https://appshunter.io/developer/1846683084) |

## 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 |


### RetaPro

[App page](https://appshunter.io/ios/app/retapro-retatrutide-tracker/id6772027026)

This app helps users meticulously track their retatrutide treatment. It logs doses, manages vials, calculates reconstitutions, and monitors progress with features like meal logging and weight tracking. Smart reminders ensure no dose is missed.

**Highlights:** Retatrutide dose logging, Vial volume monitoring, Reconstitution calculation, Protocol and cycle tracking, Personalized meal logging, Weight and progress photo tracking, Smart injection reminders

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly Plan | $39.99 | per year |
| Lifetime Plan | $39.99 | one-time |


## Frequently asked questions

### Is Milligram free?

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

### Is RetaPro free?

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

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

Milligram is rated higher. Milligram averages 4.7 out of 5 from 430 ratings, while RetaPro averages 4.6 from 45 ratings.

### Do Milligram or RetaPro have ads?

Neither Milligram nor RetaPro shows ads.

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

Milligram ships an update every 5 days, and RetaPro every 2 months. Most recently, Milligram was updated on October 25, 2026 and RetaPro on October 25, 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.*