# Greyp vs Peptide Protocol

The clearest difference is in-app purchases: Greyp at none against Peptide Protocol's 7. Greyp also leads on iOS requirement (13.0 vs 18.0). Peptide Protocol's advantage is update cadence (every 5 days vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Peptide Protocol sells 7 in-app purchases, starting at $4.99 per 7 days. Greyp asks for nothing beyond the download.

Greyp ships an update every 2 months, Peptide Protocol every 5 days. The most recent releases landed on September 29, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Greyp | Peptide Protocol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (12 ratings)](https://appshunter.io/ios/app/peptide-protocol-dose-tracker/id6762055081/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | — | Subscription |
| Size | 124 MB | 94 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Porsche e-bike performance d.o.o.](https://appshunter.io/developer/1350243460) | [Ludovic PUAUD](https://appshunter.io/developer/1874004900) |

## What reviewers say

### Greyp

[App page](https://appshunter.io/ios/app/greyp/id1483455885)

**Features:** Vision Pro support

**In-app purchases:** none


### Peptide Protocol

[App page](https://appshunter.io/ios/app/peptide-protocol-dose-tracker/id6762055081)

This app helps users track peptide doses, manage vial inventory, and monitor weekly insights like energy, sleep, and mood. It offers a reconstitution calculator and features for biohackers and longevity enthusiasts, with local-first data storage for privacy.

**Highlights:** Dose logging for peptides, Reconstitution calculation helper, Vial inventory with refill reminders, Weekly insight charts (energy, sleep, mood, weight), Protocol pausing and auto-resuming, Injection site rotation, Side-effect pattern review, Local-first data storage

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptide Protocol Pro | $4.99 | per 7 days |
| Peptide Protocol Pro | $4.99 | per 7 days |
| Peptide Protocol Pro | $9.99 | per month |
| PeptideProtocol Pro Monthly | $9.99 | per month |
| Peptide Protocol Pro | $59.99 | per year |
| PeptideProtocol Pro Yearly | $59.99 | per year |
| Pro Lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Greyp free?

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

### Is Peptide Protocol free?

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

### Do Greyp or Peptide Protocol have ads?

Neither Greyp nor Peptide Protocol shows ads.

### Which is updated more often, Greyp or Peptide Protocol?

Greyp ships an update every 2 months, and Peptide Protocol every 5 days. Most recently, Greyp was updated on September 29, 2026 and Peptide Protocol on October 9, 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.*