# PepPedia vs PepStack

PepPedia and PepStack are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases 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. PepPedia sells 2 in-app purchases, starting at $6.99 per month and PepStack sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | PepPedia | PepStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (63 ratings)](https://appshunter.io/ios/app/peppedia/id6755275369/reviews)** | — |
| Number of ratings | **63** | — |
| Positive reviews | 52.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 77 MB | 85 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [PepPedia, Inc.](https://appshunter.io/developer/1852919295) | [Max Berktold](https://appshunter.io/developer/1596273015) |

## What reviewers say

### PepPedia

[App page](https://appshunter.io/ios/app/peppedia/id6755275369)

An educational reference for peptide research, offering a comprehensive library of peptide profiles, personal tracking tools for notes and inventory, and helpful math calculators. Securely sync your data across devices to stay organized and informed.

**Highlights:** Peptide research library, Personal notes and logs, Inventory and expiration tracking, Personal metrics logging, Reconstitution calculator, Concentration math helper

**Features:** Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Peppedia Pro Monthly | $6.99 | per month |
| Peppedia Pro Yearly | $19.99 | per year |


### PepStack

[App page](https://appshunter.io/ios/app/pepstack-biohacking-tracker/id6760306960)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PepStack Premium (Monthly) | $2.99 | per month |
| PepStack Premium (Yearly) | $22.99 | per year |


## Frequently asked questions

### Is PepPedia free?

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

### Is PepStack free?

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

### Do PepPedia or PepStack have ads?

Neither PepPedia nor PepStack shows ads.

### Which is updated more often, PepPedia or PepStack?

PepPedia ships an update every 2 days, and PepStack every 2 days. Most recently, PepPedia was updated on October 6, 2026 and PepStack on October 7, 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.*