# Stack vs Peptra

Stack and Peptra are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Stack sells 2 in-app purchases, starting at $9.99 per 7 days and Peptra sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Stack | Peptra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Size | 136 MB | 14 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Amari Thomas](https://appshunter.io/developer/1868315587) | [Gokhan Tosun](https://appshunter.io/developer/1895864068) |

## 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 |


### Peptra

[App page](https://appshunter.io/ios/app/peptra-peptide-dose-tracker/id6792459908)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Annual | $29.99 | per year |
| Lifetime | $69.99 | one-time |


## Frequently asked questions

### Is Stack free?

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

### Is Peptra free?

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

### Do Stack or Peptra have ads?

Neither Stack nor Peptra shows ads.

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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.*