# Peptalog vs Protokol

The clearest difference is update cadence: Protokol at every 3 days against Peptalog's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Peptalog sells 4 in-app purchases, starting at $3.99 per 7 days and Protokol sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Peptalog ships an update every 3 months, Protokol every 3 days. The most recent releases landed on September 19, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Peptalog | Protokol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (15 ratings)](https://appshunter.io/ios/app/protokol-peptides-simplified/id6762504580/reviews)** |
| Number of ratings | — | **15** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 62 MB | 48 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Mateo Delonga](https://appshunter.io/developer/1821236294) | [Lukas LeChau](https://appshunter.io/developer/1885439213) |

## What reviewers say

### Peptalog

[App page](https://appshunter.io/ios/app/peptalog/id6762222930)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptalog Premium Weekly | $3.99 | per 7 days |
| Peptalog Premium Monthly | $9.99 | per month |
| Peptalog Premium Annual | $44.99 | per year |
| Peptalog Premium Annual | $49.99 | per year |


### Protokol

[App page](https://appshunter.io/ios/app/protokol-peptides-simplified/id6762504580)

This educational tool helps adults learn about research peptides with a guided onboarding, a library of peptide information, and tools for calculating doses and conversions. It also features a private journal for logging activities and wellness check-ins, and an AI assistant for research-related questions.

**Highlights:** Guided onboarding for personalized research summaries, Library of 19 research peptides with summaries, Dose and reconstitution math calculators, Syringe unit conversions, Private local-first journal for logging, AI research assistant

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protokol Premium | $4.99 | per month |
| Protokol Premium | $9.99 | per month |
| Protokol Premium | $39.99 | per year |
| Protokol Premium | $59.99 | per year |
| protokol_annual | $69.99 | per year |
| Protokol Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Peptalog free?

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

### Is Protokol free?

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

### Do Peptalog or Protokol have ads?

Neither Peptalog nor Protokol shows ads.

### Which is updated more often, Peptalog or Protokol?

Peptalog ships an update every 3 months, and Protokol every 3 days. Most recently, Peptalog was updated on September 19, 2026 and Protokol on September 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.*