# BKBX vs Peptide Library and Tracker

The clearest difference is in-app purchases: BKBX at none against Peptide Library and Tracker's 2. BKBX also leads on iOS requirement (12.0 vs 16.4). Peptide Library and Tracker's advantage is update cadence (every 10 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month. BKBX asks for nothing beyond the download.

BKBX ships an update monthly, Peptide Library and Tracker every 10 days. The most recent releases landed on September 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BKBX | Peptide Library and Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (25 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 85.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 10 days** |
| Monetization | — | Free |
| Size | 59 MB | 78 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Enfoque Deportivo Fyt SAPI de CV](https://appshunter.io/developer/1526664877) | [Superfime LLC](https://appshunter.io/developer/1833586524) |

## What reviewers say

### BKBX

[App page](https://appshunter.io/ios/app/bkbx/id6740535073)

**Features:** macOS Compatibility

**In-app purchases:** none


### Peptide Library and Tracker

[App page](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737)

This app serves as a comprehensive guide and lab assistant for peptide research. It offers a detailed peptide library, dose calculation tools, and advanced tracking features for logging, inventory management, and protocol adherence. Users can also access educational content and community Q&A to enhance their research workflow.

**Highlights:** Comprehensive Peptide Library & Database, Advanced Peptide Dose Calculator, Smart Tracking & Calendar View, Lab Inventory Management, Protocol Tracking & Lab Assistant, Integrated Peptide Education

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Library Pro Monthly | $4.99 | per month |
| Peptide Library Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is BKBX free?

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

### Is Peptide Library and Tracker free?

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

### Do BKBX or Peptide Library and Tracker have ads?

Neither BKBX nor Peptide Library and Tracker shows ads.

### Which is updated more often, BKBX or Peptide Library and Tracker?

BKBX ships an update monthly, and Peptide Library and Tracker every 10 days. Most recently, BKBX was updated on September 21, 2026 and Peptide Library and Tracker 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.*