# Pept Colony vs Stax

The clearest difference is rating: Stax at 5.0 against Pept Colony's 4.5. Stax also leads on update cadence (every 2 days vs every 7 months). Pept Colony's advantage is device support (3 vs 1). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Pept Colony sells 2 in-app purchases, starting at $19.99 per month and Stax sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Stax holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 12 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Pept Colony ships an update every 7 months, Stax every 2 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Pept Colony | Stax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (8 ratings)](https://appshunter.io/ios/app/pept-colony/id6757826391/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/stax-peptide-tracker/id6818569355/reviews)** |
| Number of ratings | 8 | **12** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Freemium | Freemium |
| Size | 40 MB | 64 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Reese Ramirez](https://appshunter.io/developer/1789701389) | [FARSHID ORAK](https://appshunter.io/developer/6818569357) |

## What reviewers say

### Pept Colony

[App page](https://appshunter.io/ios/app/pept-colony/id6757826391)

This app helps researchers meticulously track peptide protocols, manage dosing schedules, and monitor inventory. Visualize progress with analytics and connect with a community for shared insights and vendor reviews. Prioritizes user privacy with secure cloud storage.

**Highlights:** Custom peptide protocol tracking, Smart dosing schedule creation, Inventory management for supplies, Progress visualization with analytics, Community forums and vendor reviews, Secure data storage and privacy

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $19.99 | per month |
| Premium Yearly | $214.99 | per year |


### Stax

[App page](https://appshunter.io/ios/app/stax-peptide-tracker/id6818569355)

Automate your peptide routine with daily tracking and vial countdowns. Log doses, manage supplies, and generate reports for your doctor. Organizes other supplements and vitamins with reminders.

**Highlights:** Automated peptide routine tracking, Vial and supply countdowns, Injection spot rotation, Doctor-readable reports, Supplement organizer, Customizable reminders

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stax Plus Monthly | $6.99 | per month |
| Stax Plus Annual | $59.99 | per year |
| 14-day Trial | Free | one-time |
| Stax Plus Lifetime | $149.99 | one-time |


## Frequently asked questions

### Is Pept Colony free?

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

### Is Stax free?

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

### Which has better reviews, Pept Colony or Stax?

Stax is rated higher. Pept Colony averages 4.5 out of 5 from 8 ratings, while Stax averages 5.0 from 12 ratings.

### Do Pept Colony or Stax have ads?

Neither Pept Colony nor Stax shows ads.

### Which is updated more often, Pept Colony or Stax?

Pept Colony ships an update every 7 months, and Stax every 2 days. Most recently, Pept Colony was updated on October 31, 2026 and Stax 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.*