# Pepti vs Stacksy

The clearest difference is monetization model: Pepti at freemium against Stacksy's subscription. Stacksy's advantage is rating (5.0 vs 4.5) and ads (none vs shown). On price, review sentiment, update cadence and in-app purchases there is nothing between them.

Both are free to download. Pepti sells 3 in-app purchases, starting at $12.99 per month 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 4.5. That said, the two scores are not equally well evidenced: Stacksy has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 98% of Pepti's written reviews are positive against 100% of Stacksy's.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 21, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Pepti | Stacksy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/pepti-peptide-tracker/id6762118154/reviews) | **[5.0 (16 ratings)](https://appshunter.io/ios/app/stacksy/id6782694853/reviews)** |
| Number of ratings | 2 | **16** |
| Positive reviews | 98.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | **Freemium** | Subscription |
| Size | 23 MB | 65 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Tessaro Pty Ltd](https://appshunter.io/developer/1892988627) | [Velor4 LLC](https://appshunter.io/developer/6782694855) |

## What reviewers say

### Pepti

[App page](https://appshunter.io/ios/app/pepti-peptide-tracker/id6762118154)

This app precisely tracks compounded GLP-1s, research peptides, and TRT protocols. It offers an AI coach for pharmacology insights, a 12-zone injection site heatmap, and bloodwork analysis. Integrates with WHOOP and Apple Health for comprehensive performance correlation.

**Highlights:** AI Coach for peptide pharmacology, 12-zone injection site heatmap, Bloodwork analysis and explanation, WHOOP and Apple Health integration, Extensive compound library, Private iCloud sync

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PeptideOS Pro Monthly | $12.99 | per month |
| Pepti Pro Annual | $34.99 | per year |
| PeptideOS Pro Annual | $49.99 | per year |


### 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 Pepti free?

Pepti 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, Pepti or Stacksy?

Stacksy is rated higher. Pepti averages 4.5 out of 5 from 2 ratings, while Stacksy averages 5.0 from 16 ratings.

### Do Pepti or Stacksy have ads?

Pepti shows ads; Stacksy does not.

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

Pepti ships an update every 2 days, and Stacksy every 2 days. Most recently, Pepti was updated on October 21, 2026 and Stacksy on October 11, 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.*