# Peptly vs Stacksy

The clearest difference is monetization model: Peptly at freemium against Stacksy's subscription. Stacksy's advantage is update cadence (every 2 days vs weekly) and rating (5.0 vs 4.8). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Peptly sells 10 in-app purchases, starting at $0.99 per 7 days and Stacksy sells 5 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Stacksy holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 34 and 20 respectively.

Peptly ships an update weekly, Stacksy every 2 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Peptly | Stacksy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (34 ratings)](https://appshunter.io/ios/app/peptly-peptide-log-and-tracker/id6764067504/reviews) | **[5.0 (20 ratings)](https://appshunter.io/ios/app/stacksy/id6782694853/reviews)** |
| Number of ratings | **34** | 20 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | **Freemium** | Subscription |
| Size | 29 MB | 65 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Baris Bingor](https://appshunter.io/developer/1634613310) | [Velor4 LLC](https://appshunter.io/developer/6782694855) |

## What reviewers say

### Peptly

[App page](https://appshunter.io/ios/app/peptly-peptide-log-and-tracker/id6764067504)

This app simplifies peptide reconstitution and dosing for researchers and biohackers. It provides instant calculations, visual syringe guides, and a dose log, all processed on-device for privacy. Unlock advanced features like reminders and export options with a subscription.

**Highlights:** Instant reconstitution math, Visual syringe guide, Pre-loaded peptide profiles, On-device dose log, Smart dose reminders, Save and reload protocols, CSV export

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peptly Pro Weekly | $0.99 | per 7 days |
| Peptly Pro Weekly | $1.99 | per 7 days |
| Peptly Pro Weekly | $2.99 | per 7 days |
| Peptly Pro Weekly | $4.99 | per 7 days |
| Peptly Pro Yearly | $19.99 | per year |
| Peptly Pro Yearly | $29.99 | per year |
| Peptly Pro Yearly | $49.99 | per year |
| Peptly Pro Lifetime | $29.99 | one-time |
| Peptly Pro Lifetime | $49.99 | one-time |
| Peptly Pro Lifetime | $79.99 | one-time |


### Stacksy

[App page](https://appshunter.io/ios/app/stacksy/id6782694853)

Organize and track your personal peptide protocol with this private application. Manage your entire routine, including what peptides to take and when. Offers monthly and yearly subscription plans for full access.

**Highlights:** Organize peptide protocols, Track peptide dosages, Schedule peptide intake, Private routine management, GLP-1 tracking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stacksy Pro (Monthly) | $9.99 | per month |
| Stacksy Pro (Yearly) | $24.99 | per year |
| Stacksy Pro (Yearly) | $24.99 | per year |
| Stacksy Pro (Yearly) | $24.99 | per year |
| Stacksy Pro (Yearly) | $39.99 | per year |


## Frequently asked questions

### Is Peptly free?

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

### Is Stacksy free?

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

### Which has better reviews, Peptly or Stacksy?

Stacksy is rated higher. Peptly averages 4.8 out of 5 from 34 ratings, while Stacksy averages 5.0 from 20 ratings.

### Do Peptly or Stacksy have ads?

Neither Peptly nor Stacksy shows ads.

### Which is updated more often, Peptly or Stacksy?

Peptly ships an update weekly, and Stacksy every 2 days. Most recently, Peptly was updated on November 5, 2026 and Stacksy on October 31, 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.*