# B3 Coaching vs Peptide Tracker

The clearest difference is update cadence: Peptide Tracker at fortnightly against B3 Coaching's every 18 months. Peptide Tracker also leads on device support. B3 Coaching's advantage is iOS requirement (15.0 vs 18.0). 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 Peptide Tracker sells 7 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

B3 Coaching ships an update every 18 months, Peptide Tracker fortnightly. The most recent releases landed on October 27, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | B3 Coaching | Peptide Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (443 ratings)](https://appshunter.io/ios/app/peptide-tracker-pepflow/id6740525224/reviews)** |
| Number of ratings | — | **443** |
| Positive reviews | — | 77.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | — | No |
| Update frequency | Every 18 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 50 MB | 181 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Bryce MacArthur](https://appshunter.io/developer/1720552006) | [keinois OU](https://appshunter.io/developer/1597616328) |

## 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 |


### Peptide Tracker

[App page](https://appshunter.io/ios/app/peptide-tracker-pepflow/id6740525224)

Log peptide injections, manage flexible schedules, and receive timely reminders. This app helps you keep track of your treatment protocols, preparation details, and dose history, ensuring you stay on track with your health regimen. View upcoming and past doses in a calendar and sync data across devices.

**Highlights:** Log peptide injections and other medication types, Manage flexible schedules and reminders, Save preparation details for peptides, Review dose history and upcoming doses, Calendar view of doses, Widgets and Live Activities for schedule checks, iCloud sync across iPhone and iPad

**Features:** Family Sharing

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepFlow PRO (Weekly) | $0.99 | per 7 days |
| PepFlow PRO (Monthly) | $2.99 | per month |
| PepFlow PRO (Weekly) | $2.99 | per 7 days |
| PepFlow PRO (Weekly) | $3.99 | per 7 days |
| PepFlow PRO (Annual) | $8.99 | per year |
| PepFlow PRO (Monthly) | $9.99 | per month |
| PepFlow PRO (Annual) | $29.99 | per year |


## Frequently asked questions

### Is B3 Coaching free?

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

### Is Peptide Tracker free?

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

### Which is updated more often, B3 Coaching or Peptide Tracker?

B3 Coaching ships an update every 18 months, and Peptide Tracker fortnightly. Most recently, B3 Coaching was updated on October 27, 2026 and Peptide Tracker on November 8, 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.*