# B3 Coaching vs Milligram

The clearest difference is update cadence: Milligram at every 5 days against B3 Coaching's every 18 months. Milligram also leads on device support. B3 Coaching's advantage is iOS requirement (15.0 vs 17.0). On price and in-app purchases there is nothing between them.

Both are free to download. B3 Coaching sells 1 in-app purchase, starting at $350.00 per month and Milligram sells 3 in-app purchases, starting at $17.49 per month. Whichever you choose, the download price is not the number that matters.

B3 Coaching ships an update every 18 months, Milligram every 5 days. The most recent releases landed on October 27, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | B3 Coaching | Milligram |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (615 ratings)](https://appshunter.io/ios/app/milligram-peptide-tracker/id6759593151/reviews)** |
| Number of ratings | — | **615** |
| Positive reviews | — | 58.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | Every 18 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 50 MB | 171 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | — | **iPhone, Apple Watch** |
| Age rating | 17+ | 12+ |
| Developer | [Bryce MacArthur](https://appshunter.io/developer/1720552006) | [Milligram Health Pty Ltd](https://appshunter.io/developer/6821805255) |

## What reviewers say

### B3 Coaching

[App page](https://appshunter.io/ios/app/b3-coaching/id6474073467)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Silver Membership | $350.00 | per month |


### 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 |


## Frequently asked questions

### Is B3 Coaching free?

B3 Coaching is free to download, with in-app purchases available.

### Is Milligram free?

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

### Which is updated more often, B3 Coaching or Milligram?

B3 Coaching ships an update every 18 months, and Milligram every 5 days. Most recently, B3 Coaching was updated on October 27, 2026 and Milligram 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.*