# ProStack vs Pep Pal

The clearest difference is in-app purchases: ProStack at none against Pep Pal's 2. ProStack also leads on update cadence (every 6 days vs every 2 weeks) and iOS requirement (16.4 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. Pep Pal sells 2 in-app purchases, starting at $14.99 per month. ProStack asks for nothing beyond the download.

ProStack ships an update every 6 days, Pep Pal every 2 weeks. The most recent releases landed on September 29, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | ProStack | Pep Pal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prostack-peptide-tracker/id6789934657/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 65 MB | 39 MB |
| Requires iOS | **16.4** | 26.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [JESSIE GRACE CHRISTIE](https://appshunter.io/developer/6789934659) | [io.fezstudios](https://appshunter.io/developer/6788255800) |

## What reviewers say

### ProStack

[App page](https://appshunter.io/ios/app/prostack-peptide-tracker/id6789934657)

Effortlessly calculate peptide dosages and track your cycles with instant syringe unit calculations. Log your progress, set reminders, and access a reference library for safe and effective use.

**Highlights:** Instant syringe unit calculation, Cycle tracking with calendar view, Dose reminders with auto-pause, Progress tracking (body composition, photos), Peptide reference library, Nasal spray calculator

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

**In-app purchases:** none


### Pep Pal

[App page](https://appshunter.io/ios/app/pep-pal-glp-1-tracker/id6803771466)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pep Pal Pro | $14.99 | per month |
| Pep Pal Pro | $39.99 | per year |


## Frequently asked questions

### Is ProStack free?

ProStack is free to download, with no in-app purchases.

### Is Pep Pal free?

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

### Do ProStack or Pep Pal have ads?

Neither ProStack nor Pep Pal shows ads.

### Which is updated more often, ProStack or Pep Pal?

ProStack ships an update every 6 days, and Pep Pal every 2 weeks. Most recently, ProStack was updated on September 29, 2026 and Pep Pal on September 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*