# Peptide Library and Tracker vs Nutralign

The clearest difference is in-app purchases: Nutralign at none against Peptide Library and Tracker's 2. Peptide Library and Tracker's advantage is update cadence (every 10 days vs every 2 months). On price, ads, device support and iOS requirement 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. Nutralign asks for nothing beyond the download.

Peptide Library and Tracker ships an update every 10 days, Nutralign every 2 months. Both last shipped on October 16, 2026.

## The numbers

| Metric | Peptide Library and Tracker | Nutralign |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free | — |
| Size | 78 MB | 31 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Superfime LLC](https://appshunter.io/developer/1833586524) | [ANGELO NICOLAS AQUINO REYES](https://appshunter.io/developer/1877774096) |

## What reviewers say

### 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 |


### Nutralign

[App page](https://appshunter.io/ios/app/nutralign/id6759273455)

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

**In-app purchases:** none


## Frequently asked questions

### Is Peptide Library and Tracker free?

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

### Is Nutralign free?

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

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

Neither Peptide Library and Tracker nor Nutralign shows ads.

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

Peptide Library and Tracker ships an update every 10 days, and Nutralign every 2 months. Most recently, Peptide Library and Tracker was updated on October 16, 2026 and Nutralign on October 16, 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.*