# KDP FIT vs Peptmate

The clearest difference is update cadence: Peptmate at every 4 days against KDP FIT's every 6 weeks. KDP FIT's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KDP FIT ships an update every 6 weeks, Peptmate every 4 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | KDP FIT | Peptmate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/peptmate-peptide-tracker/id6774078620/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | — | Free |
| Size | 70 MB | 27 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Xoda Pty Ltd](https://appshunter.io/developer/1662306656) | [Techquarters](https://appshunter.io/developer/1725823822) |

## What reviewers say

### KDP FIT

[App page](https://appshunter.io/ios/app/kdp-fit/id6747339513)

**Features:** macOS Compatibility

**In-app purchases:** none


### Peptmate

[App page](https://appshunter.io/ios/app/peptmate-peptide-tracker/id6774078620)

This app helps you meticulously track research peptides, manage dosages with automatic calculations, and monitor your progress. It offers a private space to log your journey, including mood and weight, with educational resources on common peptides.

**Highlights:** Log peptide doses with one tap, Automatic dosage calculations, Vial and supply tracking, Mood and weight logging, Research peptide library, Secure data sync across devices

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

**In-app purchases:** none


## Frequently asked questions

### Is KDP FIT free?

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

### Is Peptmate free?

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

### Do KDP FIT or Peptmate have ads?

Neither KDP FIT nor Peptmate shows ads.

### Which is updated more often, KDP FIT or Peptmate?

KDP FIT ships an update every 6 weeks, and Peptmate every 4 days. Most recently, KDP FIT was updated on October 25, 2026 and Peptmate on October 28, 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.*