# Stack vs Titrate

The clearest difference is iOS requirement: Titrate at 15.1 against Stack's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Stack ships an update every 8 days, Titrate every 11 days. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Stack | Titrate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (17 ratings)](https://appshunter.io/ios/app/titrate-peptide-dose-tracker/id6774892896/reviews)** |
| Number of ratings | — | **17** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 11 days |
| Monetization | — | Freemium |
| Size | 136 MB | 33 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Amari Thomas](https://appshunter.io/developer/1868315587) | [Titrate Labs LLC](https://appshunter.io/developer/6774892898) |

## 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 |


### Titrate

[App page](https://appshunter.io/ios/app/titrate-peptide-dose-tracker/id6774892896)

Log peptide and GLP-1 injections with precision. Track doses, frequencies, and cycles using a clean, clinical interface. Includes smart reminders and weight tracking, with premium features for vial mixing and hydration.

**Highlights:** Injection logging with dose tracking, GLP-1 and peptide support, Weight tracking with progress trends, Smart injection reminders, Vial mixing calculator (Premium), Hydration tracking (Premium)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Titrate Premium Monthly | $4.99 | per month |
| Titrate Premium Annual | $24.99 | per year |


## Frequently asked questions

### Is Stack free?

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

### Is Titrate free?

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

### Do Stack or Titrate have ads?

Neither Stack nor Titrate shows ads.

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

Stack ships an update every 8 days, and Titrate every 11 days. Most recently, Stack was updated on September 14, 2026 and Titrate on September 21, 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.*