# Stack vs Stacksy

The clearest difference is update cadence: Stacksy at every 2 days against Stack's every 3 weeks. Stacksy also leads on iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stack sells 2 in-app purchases, starting at $9.99 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.

Stack ships an update every 3 weeks, Stacksy every 2 days. The most recent releases landed on October 18, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Stack | Stacksy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (16 ratings)](https://appshunter.io/ios/app/stacksy/id6782694853/reviews)** |
| Number of ratings | — | **16** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | — | Subscription |
| Size | 106 MB | 65 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Amari Thomas](https://appshunter.io/developer/1868315587) | [Velor4 LLC](https://appshunter.io/developer/6782694855) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-peptide-tracker/id6773488687)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Weekly | $9.99 | per 7 days |
| Stack Yearly | $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 Stack free?

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

### Is Stacksy free?

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

### Do Stack or Stacksy have ads?

Neither Stack nor Stacksy shows ads.

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

Stack ships an update every 3 weeks, and Stacksy every 2 days. Most recently, Stack was updated on October 18, 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.*