# Forge Gym vs PeptideBros

The clearest difference is in-app purchases: Forge Gym at none against PeptideBros's 2. Forge Gym also leads on device support (4 vs 2). PeptideBros's advantage is update cadence (every 3 weeks vs every 3 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. PeptideBros sells 2 in-app purchases, starting at $4.99 per month. Forge Gym asks for nothing beyond the download.

Forge Gym ships an update every 3 months, PeptideBros every 3 weeks. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Forge Gym | PeptideBros |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/peptidebros/id6762238490/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 192 MB | 44 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Strength HQ LTD](https://appshunter.io/developer/1642584280) | [Adam Farrar](https://appshunter.io/developer/1832870508) |

## What reviewers say

### Forge Gym

[App page](https://appshunter.io/ios/app/forge-gym/id1642584278)

**Features:** Apple Wallet

**In-app purchases:** none


### PeptideBros

[App page](https://appshunter.io/ios/app/peptidebros/id6762238490)

This app helps researchers meticulously track peptide injection protocols, log doses, and monitor progress. It offers features like custom protocol creation, automated injection site rotation, and streak tracking for motivation. An integrated encyclopedia provides factual information on common research peptides.

**Highlights:** Custom peptide protocol creation, Automated injection site rotation, Dose logging with site and feeling score, Streak tracking for motivation, Adherence rate and pattern analytics, Research peptide encyclopedia, Journaling and notes

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lab Notebook Monthly | $4.99 | per month |
| Lab Notebook (Annual) | $39.99 | per year |


## Frequently asked questions

### Is Forge Gym free?

Forge Gym is free to download, with no in-app purchases.

### Is PeptideBros free?

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

### Do Forge Gym or PeptideBros have ads?

Neither Forge Gym nor PeptideBros shows ads.

### Which is updated more often, Forge Gym or PeptideBros?

Forge Gym ships an update every 3 months, and PeptideBros every 3 weeks. Most recently, Forge Gym was updated on October 30, 2026 and PeptideBros on October 24, 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.*