# Stack vs STAKK

The clearest difference is ads: Stack at none against STAKK's shown. Stack also leads on update cadence (every 8 days vs monthly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Stack sells 2 in-app purchases, starting at $9.99 per 7 days and STAKK sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Stack ships an update every 8 days, STAKK monthly. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Stack | STAKK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Monthly |
| Size | 136 MB | 9 MB |
| Requires iOS | 18.0 | **17.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Amari Thomas](https://appshunter.io/developer/1868315587) | [Trusted Brands UG (haftungsbeschrankt)](https://appshunter.io/developer/1780095504) |

## 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 |


### STAKK

[App page](https://appshunter.io/ios/app/stakk-peptide-tracker/id6789550410)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stakk Premium Weekly | $6.99 | per 7 days |
| Stakk Premium Yearly | $49.99 | per year |


## Frequently asked questions

### Is Stack free?

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

### Is STAKK free?

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

### Do Stack or STAKK have ads?

STAKK shows ads; Stack does not.

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

Stack ships an update every 8 days, and STAKK monthly. Most recently, Stack was updated on September 14, 2026 and STAKK on September 17, 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.*