# PepLog vs Peptide Library and Tracker

The clearest difference is rating: Peptide Library and Tracker at 4.7 against PepLog's 4.0. Peptide Library and Tracker also leads on review sentiment (86% vs 50%) and update cadence (every 10 days vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. PepLog sells 1 one-off in-app purchase and Peptide Library and Tracker sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Peptide Library and Tracker holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Peptide Library and Tracker has 25 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of PepLog's written reviews are positive against 86% of Peptide Library and Tracker's.

PepLog ships an update every 3 months, Peptide Library and Tracker every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | PepLog | Peptide Library and Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/peplog/id6744858000/reviews) | **[4.7 (25 ratings)](https://appshunter.io/ios/app/peptide-library-and-tracker/id6755092737/reviews)** |
| Number of ratings | 2 | **25** |
| Positive reviews | 50.0% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Free | Free |
| Size | 67 MB | 78 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Roberto Yudice](https://appshunter.io/developer/1799605586) | [Superfime LLC](https://appshunter.io/developer/1833586524) |

## What reviewers say

### PepLog

[App page](https://appshunter.io/ios/app/peplog/id6744858000)

This app simplifies tracking complex peptide protocols by managing schedules, sending timely reminders, and allowing one-tap dose logging. It supports multiple peptides, provides a full dose history, and estimates supply duration to prevent running out.

**Highlights:** Flexible peptide scheduling, Home screen widget for quick logging, One-tap dose logging, Multi-peptide protocol support, Smart dose reminders, Full dose history, Supply duration calculation

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepLog Pro Lifetime | $4.99 | one-time |


### 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 PepLog free?

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

### Is Peptide Library and Tracker free?

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

### Which has better reviews, PepLog or Peptide Library and Tracker?

Peptide Library and Tracker is rated higher. PepLog averages 4.0 out of 5 from 2 ratings, while Peptide Library and Tracker averages 4.7 from 25 ratings.

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

Neither PepLog nor Peptide Library and Tracker shows ads.

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

PepLog ships an update every 3 months, and Peptide Library and Tracker every 10 days. Most recently, PepLog was updated on October 24, 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.*