# Protocol vs Vialy

The clearest difference is in-app purchases: Vialy at none against Protocol's 2. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Protocol sells 2 in-app purchases, starting at $1.99 per 7 days. Vialy asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Protocol against 5.0 for Vialy. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Protocol | Vialy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/protocol-peptides/id6764390731/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/vialy-peptide-tracker/id6768241513/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free | Free |
| Size | 47 MB | 15 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Alexandre Masmejean](https://appshunter.io/developer/1895978437) | [Lunium AB](https://appshunter.io/developer/1857989339) |

## What reviewers say

### Protocol

[App page](https://appshunter.io/ios/app/protocol-peptides/id6764390731)

This app helps users meticulously track peptide cycles, logging each injection with customizable details. It provides comprehensive guides on reconstitution, injection techniques, and safety, alongside personalized reminders and progress tracking.

**Highlights:** Log peptide injections with customizable details, Curated library of 25+ compounds, Add custom compounds and edit entries, Streak counter and dose history, Per-peptide reminders with native iOS notifications, Built-in safety and how-to guides, Personalized onboarding based on goals and experience

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protocol Pro | $1.99 | per 7 days |
| Protocol Pro | $39.99 | per year |


### Vialy

[App page](https://appshunter.io/ios/app/vialy-peptide-tracker/id6768241513)

This app helps adults using prescribed peptides track their doses, manage protocols, and log injections. It calculates concentrations and units, plans injection schedules, and tracks vial usage. A reference library and dose reminders are included.

**Highlights:** Live dose and concentration calculation, Customizable protocol planning, Body map injection logging, Vial usage and cost tracking, Built-in peptide reference library, Dose reminders, Data export (JSON/CSV)

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

**In-app purchases:** none


## Frequently asked questions

### Is Protocol free?

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

### Is Vialy free?

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

### Which has better reviews, Protocol or Vialy?

Protocol and Vialy are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Protocol or Vialy have ads?

Neither Protocol nor Vialy shows ads.

### Which is updated more often, Protocol or Vialy?

Protocol ships an update every 2 days, and Vialy every 2 days. Most recently, Protocol was updated on October 2, 2026 and Vialy on October 15, 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.*