# Vially vs Stack

The clearest difference is ads: Stack at none against Vially's shown. Vially's advantage is update cadence (weekly vs every 2 weeks) and iOS requirement (16.4 vs 18.0). On price, in-app purchases and device support there is nothing between them.

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

Vially ships an update weekly, Stack every 2 weeks. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Vially | Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 92 MB | 106 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Dhanushka Perera](https://appshunter.io/developer/1867773831) | [Amari Thomas](https://appshunter.io/developer/1868315587) |

## What reviewers say

### Vially

[App page](https://appshunter.io/ios/app/vially-peptide-glp-1-tracker/id6757602228)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Vially Pro Weekly | $4.99 | per 7 days |
| Vially Pro Monthly | $9.99 | per month |
| Vially Pro Yearly | $79.99 | per year |


### 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 |


## Frequently asked questions

### Is Vially free?

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

### Is Stack free?

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

### Do Vially or Stack have ads?

Vially shows ads; Stack does not.

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

Vially ships an update weekly, and Stack every 2 weeks. Most recently, Vially was updated on November 4, 2026 and Stack on November 10, 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.*